WO2016180232A1 - Clock planning method and device - Google Patents

Abstract

A clock planning method, comprising: when detecting a clock planning command, dividing according to the clock planning command a network to be planned into at least one clock chain, and injecting a clock configured at the divided clock chain into a node, determining according to the clock planning command a planning method of the clock chain, wherein the planning method is based on a loop or a shortest path; injecting, according to the determined planning method, the clock at the divided clock chain into the node, and determining a clock tracking direction of each node on the clock chain. The method in the present invention can reduce operation complexity in clock planning.

Description

Clock planning method and device Technical field

The present application relates to, but is not limited to, the field of communications technologies, and in particular, to a clock planning method and apparatus.

Background technique

In communication networks, clocks are a very important factor and are directly related to the quality of network services. Typically, the network uses one or more external clock sources to provide a standard clock signal for each node in the network. Each node follows an pre-planned clock tracking relationship, tracks an external clock source, and tracks when network conditions change. The switching of the relationship. An important principle that the clock tracing relationship needs to satisfy is that the clock tracing relationship cannot be looped at any time. For example, the second tracking node B of the node A and the second tracking node A of the node B will cause the network service to fail.

However, with the rapid development of network technology, the network structure is becoming more and more complex. For example, in a bearer network, network nodes generally have multiple degrees, and the topological relationship between nodes is complex. The related manual planning method is difficult to meet the clock planning of the bearer network. Demand, clock planning is more difficult to operate.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiment of the invention provides a clock planning method and device, which can reduce the operation difficulty of clock planning.

The embodiment of the invention provides a clock planning method, where the clock planning method includes:

When the clock planning instruction is detected, the network to be planned is split into at least one clock link based on the clock planning instruction, and a clock injection node is set for the split clock link;

Determining, according to the clock planning instruction, a planning manner of the clock link, where the planning mode is a ring mode or a shortest path mode;

Determining a clock tracking direction of each node on the clock link according to the determined planning manner and a clock injection node of the clock link.

Optionally, when the clock link is a ring clock link and the ring clock link includes a single clock injection node, the determining is determined according to a determined planning manner and a clock injection node of the clock link. The steps of clock tracking direction of each node on the clock link include:

Determining, in the ring mode, that the planned mode of the clock injection node is a node with a larger node identifier;

Setting the clock injection node to the determined direction of the node as a clock tracking direction;

Setting a connection port of any one of the ring clock link except the clock injection node and a previous node in the clock tracking direction as a high priority clock port, and the ring clock chain The connection port of any node other than the clock injection node on the road and the next node in the clock tracking direction is set as a low priority clock port.

Optionally, when the clock link is a ring clock link and the ring clock link includes a primary clock injection node and a backup clock injection node, the determining according to the determined planning manner and the clock link The clock injection node determines the clock tracking direction of each node on the clock link, including:

When the determined planning mode is the ring mode, determining whether the primary clock injection node is adjacent to the standby clock injection node, and if the primary clock injection node is adjacent to the standby clock injection node, Determining, by the clock injection node, the direction of the main clock injection node is a clock tracking direction, and if the main clock injection node is not adjacent to the standby clock injection node, determining a neighboring node of the main clock injection node The node in the middle identifies a larger node, and the direction in which the primary clock is injected into the node to the determined node is set to a clock tracking direction;

Setting a connection port of the ring clock link except the main clock injection node to a node of the previous node in the clock tracking direction as a high priority clock port, and the ring clock A connection port of any node other than the standby clock injection node and the next node of the clock tracking direction is set as a low priority clock port.

Optionally, when the number of the clock links is multiple, the setting a clock injection node for the split clock link includes:

When the clock link is a ring clock link, and the ring clock link and at least one other ring clock link communicate with each other to form a clock domain, each ring clock in the clock domain is sequentially extracted. The link acts as a ring clock link to be set;

Determining, when the extracted ring clock link to be set includes the first clock injection node, whether the ring clock link that is not connected to the ring link to be set includes a second clock injection node, where The first clock injection node is a main clock injection node, the second clock injection node is a standby clock injection node, or the first clock injection node is a standby clock injection node, and the second clock injection node is injected into a main clock. node;

Acquiring the ring clock link to be set and the adjacent and unset ring when the ring clock link that is connected to the ring clock link that is to be set and not set includes the second clock injection node a shared node between clock links;

The shared node is virtualized as the second clock injection node of the ring clock link to be set, and the shared node is virtualized as the ring clock chain adjacent to the ring clock link to be set and not set. The first clock of the path is injected into the node, and the ring clock link to be set is updated to the set ring clock link.

Optionally, after determining a clock tracking direction of the node on the clock link, the clock planning method further includes:

When the standby clock injection node includes a plurality of actual nodes, setting any of the actual nodes included in the standby clock injection node to a connection port of the last actual node in the clock tracking direction as a high priority clock. The port is configured to inject the standby clock into any of the actual nodes included in the node and the connection port of the next actual node included in the clock tracking direction and in the clock tracking direction as a low priority clock port.

Optionally, when the clock link is a ring clock link and the ring clock link includes a single clock injection node, the determining is determined according to a determined planning manner and a clock injection node of the clock link. The steps of clock tracking direction of each node on the clock link include:

When the determined planning mode is the shortest path mode, each node except the clock injection node is sequentially selected along the two sides of the clock injection node;

When the node is selected, it is determined whether the currently selected node is the same node;

When the currently selected node is a different node, set the connection port of the selected node to the previous node in the direction to be the high priority clock port, respectively, and select the selected node and its direction. The connection port of the next node is set to a low priority clock port, and when the currently selected node is a neighboring node, the step of executing the selected node is stopped;

When the currently selected node is the same node, the two selected ports of the same node are set as the high priority clock port and the low priority clock port respectively, and the steps of stopping the selected node are stopped according to the preset priority rule. .

Optionally, the preset priority rule includes:

If the port types of the two ports are different, set the optical port to a high-priority clock port and the electrical port to a low-priority clock port.

If the port types of the two ports are the same, set the port with the higher port rate as the high priority clock port and the other port to the lower priority clock port.

If the port rates of the two ports are the same, set the port with the larger port number as the high priority clock port and the other port to the lower priority clock port.

If the port numbers of the two ports are the same, set the port with the larger slot number as the high priority clock port and the other port to the lower priority clock port.

Optionally, when the clock link is a ring clock link including multiple clock injection nodes, determining the clock link according to the determined planning manner and the clock injection node of the clock link. The steps of the clock tracking direction of each node include:

And obtaining, in the shortest path mode, the hop count of each of the first tracking nodes from each clock injection node, wherein the first tracking node is the ring clock link except The clock is injected into other nodes than the node;

Obtaining a clock injection node corresponding to a minimum number of hops in the corresponding hop count of each of the first tracking nodes, and setting a reverse direction of each of the first tracking nodes to the acquired clock injection node as a clock tracking direction;

Setting a connection port of each of the first tracking node and a previous node in the clock tracking direction as a high priority clock port, and placing each of the first tracking nodes under the clock tracking direction The connection port of a node is set to a low priority clock port.

Optionally, when the clock link is a chain clock link, determining, according to the determined planning manner and a clock injection node of the clock link, a clock of each node on the clock link. The steps to track the direction include:

When the determined planning mode is the shortest path mode, the clock is injected into the node as a starting point of the chain clock link, and the clock is injected into the node to the direction of other nodes in the chain clock link. The link direction of the chain clock link;

Setting a connection port of each second tracking node and a previous node in the link direction as a clock port, wherein the second tracking node is the clock injection node except the clock injection node Other nodes outside.

Optionally, when the chain clock link includes two clock injection nodes, the step of setting each second tracking node and a connection port of a previous node in the link direction as a clock port includes: :

Obtaining, by each second tracking node, a hop count from each of the clock injection nodes in each of the link directions;

Obtaining a clock injection node corresponding to a minimum number of hops in each hop count of each second tracking node, and setting a reverse direction of each of the second tracking nodes to the acquired clock injection node as a clock tracking direction;

Setting a connection port of each of the second tracking node and a previous node in the clock tracking direction as a high priority clock port, and placing each of the second tracking nodes under the clock tracking direction The connection port of a node is set to a low priority clock port.

In addition, an embodiment of the present invention further provides a clock planning apparatus, where the clock planning apparatus includes:

The splitting module is configured to: when detecting a clock planning instruction, split the network to be planned into at least one clock link based on the clock planning instruction, and set a clock injection node for the split clock link;

a determining module, configured to: determine, according to the clock planning instruction, a planning manner of the clock link, where the planning mode is a ring mode or a shortest path mode;

The planning module is configured to: determine a clock tracking direction of each node on the clock link according to the determined planning manner and a clock injection node of the clock link.

Optionally, the planning module is configured to: when the clock link is a ring clock link and The ring clock link includes a single clock injection node, and when the determined planning mode is the ring mode, determining a node with a larger node identifier among adjacent nodes of the clock injection node; injecting the clock into the node to Determining the direction of the node as a clock tracking direction; and setting a connection port of any node other than the clock injection node on the ring clock link to a previous node in the clock tracking direction For a high priority clock port, a connection port of any node other than the clock injection node and the next node in the clock tracking direction on the ring clock link is set as a low priority clock port.

Optionally, the planning module is configured to: when the clock link is a ring clock link, and the ring clock link includes a primary clock injection node and a backup clock injection node, and the determined planning manner In the case of the ring mode, determining whether the master clock injection node is adjacent to the standby clock injection node, and if the master clock injection node is adjacent to the standby clock injection node, injecting the standby clock into the node to the node The direction of the main clock injection node is set to a clock tracking direction. If the main clock injection node is not adjacent to the standby clock injection node, it is determined that the node identifier of the adjacent node of the main clock injection node is larger. a node, and the direction in which the master clock is injected into the node to the determined node is set to a clock tracking direction; and any node other than the master clock injection node on the ring clock link The connection port of the previous node in the clock tracking direction is set as a high priority clock port, and any node other than the standby clock injection node on the ring clock link and the clock tracking side The next node is connected to a low-priority port clock port.

Optionally, the splitting module includes:

And an extracting unit, configured to: when the clock link is a ring clock link, and the ring clock link and at least one other ring clock link communicate with each other to form a clock domain, sequentially extracting the clock domain Each ring clock link acts as a ring clock link to be set;

a determining unit, configured to: determine, when the extracted ring clock link to be set includes the first clock injection node, whether the ring clock link that is not connected to the ring link to be set includes a second clock Injecting a node, wherein the first clock injection node is a primary clock injection node, the second clock injection node is a standby clock injection node, or the first clock injection node is a standby clock injection node, and the second clock The injection node is injected into the node as a master clock;

An acquiring unit, configured to: when the ring clock link that is connected to the to-be-set ring clock link and that is not set includes the second clock injection node, acquire the ring clock link to be set and adjacent And a shared node between the ring clock links that are not set;

a setting unit, configured to: virtualize the shared node as a second clock injection node of the ring clock link to be set, and virtualize the shared node as adjacent to the ring clock link to be set And setting a first clock injection node of the ring clock link, and updating the to-be-set ring clock link to a set ring clock link.

Optionally, the planning module is further configured to: when the standby clock injection node includes a plurality of actual nodes, and after determining a clock tracking direction of a node on the clock link, inject the standby clock into the node. The connection port of any actual node and the last actual node in the clock tracking direction is set as a high priority clock port, and the standby clock is injected into any node included in the node and the standby clock injection node includes And the connection port of the next actual node in the clock tracking direction is set to a low priority clock port.

Optionally, the planning module is configured to: when the clock link is a ring clock link and the ring clock link includes a single clock injection node, and the determined planning mode is the shortest path mode And simultaneously selecting each node except the clock injection node in the direction of both sides of the clock injection node; when the node is selected, determining whether the currently selected node is the same node; when the currently selected node is a different node Set the connection port of the selected node and the previous node in the direction to the high priority clock port respectively, and set the connection port of the selected node and the next node in the direction to the lower priority clock port, respectively. When the selected node is a neighboring node, the selected node is stopped; and when the currently selected node is the same node, the selected two sides of the same node are respectively set as the high priority clock port according to the preset priority rule. And the low priority clock port and stop the selected node.

Optionally, the preset priority rule includes:

If the port types of the two ports are different, set the optical port to a high-priority clock port and the electrical port to a low-priority clock port.

If the port types of the two ports are the same, set the port with the higher port rate as the high priority clock port and the other port to the lower priority clock port.

If the port rates of the two ports are the same, set the port with the larger port number as the high priority clock port and the other port to the lower priority clock port.

If the port numbers of the two ports are the same, set the port with the larger slot number as the high priority clock port and the other port to the lower priority clock port.

Optionally, the planning module is configured to: when the clock link is an annular clock link that includes multiple clock injection nodes, and the determined planning mode is the shortest path mode, obtain each first Tracking the number of hops of the node from each clock injection node, wherein the first tracking node is a node other than the clock injection node in the ring clock link; acquiring each of the first tracking nodes Corresponding to a clock injection node corresponding to the minimum hop count in the hop count, and setting a reverse direction of each of the first tracking node to the acquired clock injection node as a clock tracking direction; and each of the first tracking The connection port of the node and the previous node in the clock tracking direction is set as a high priority clock port, and the connection port of each of the first tracking node and the next node in the clock tracking direction is set to be low. Priority clock port.

Optionally, the planning module is configured to: when the clock link is a chain clock link, and the determined planning mode is the shortest path mode, the clock is injected into the node as the chain clock link. a starting point and injecting the clock into a node to a direction of other nodes in the chain clock link as a link direction of the chain clock link; and placing each second tracking node with the link The connection port of the previous node in the direction is set as a clock port, wherein the second tracking node is a node other than the clock injection node in the chain clock link.

Optionally, the planning module is configured to: when the chain clock link includes two clock injection nodes, acquire each second tracking node in a distance from each of the links in each of the links Injecting the number of hops of the node; acquiring a clock injection node corresponding to the minimum number of hops in each hop count of each second tracking node, and setting the reverse direction of each of the second tracking nodes to the acquired clock injection node as a clock tracking direction And setting a connection port of each of the second tracking node and a previous node in the clock tracking direction as a high priority clock port, and each of the second tracking nodes is in the clock tracking direction The connection port of the next node is set to the low priority clock port.

In addition, an embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when the computer executable instructions are executed.

In the embodiment of the present invention, the network to be planned is split into a set of a ring clock link and a chain clock link, and each ring clock link and each chain clock link are automatically performed by using a specified planning manner. The clock planning operation does not require manual planning in the embodiment of the present invention, thereby reducing the probability of occurrence of errors. Reduce the difficulty of clock planning.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a schematic flowchart of a clock planning method according to a first embodiment of the present invention;

2 is a schematic diagram of a topology structure of a clock link in a second embodiment of the present invention;

3 is a schematic diagram of a topology structure of a clock link in a third embodiment of the present invention;

4 is a schematic diagram of a topology structure of a clock link in a fourth embodiment of the present invention;

FIG. 5 is a schematic diagram of a topology structure of a clock link in a fifth embodiment of the present invention; FIG.

6 is a schematic diagram of a topology structure of a clock link in a sixth embodiment of the present invention;

7 is a schematic topological structural diagram of a clock link in a seventh embodiment of the present invention;

8 is a schematic topological structural diagram of a clock link in an eighth embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a function module of a clock planning apparatus according to a first embodiment of the present invention.

The implementation, functional features and advantages of the present application will be further described with reference to the accompanying drawings.

Embodiments of the invention

It is understood that the specific embodiments described herein are merely illustrative of the application and are not intended to be limiting.

The embodiment of the present invention provides a clock planning method. Referring to FIG. 1, in the first embodiment, the clock planning method includes the following steps:

In step S10, when the clock planning instruction is detected, the network to be planned is split into at least one clock link based on the clock planning instruction, and a clock injection node is set for the split clock link.

In this embodiment, a complete subnet may be used as a network to be planned in response to a user operation, or a network topology formed by a part of nodes in a subnet may be used as a network to be planned; after the network to be planned is determined, based on the detected The clock planning instruction splits the network to be planned into at least one clock link, wherein the split clock link is ring-shaped or chain-shaped, and the clock link is split as follows. Shown as follows:

Step A1: Find a single chain of all nodes of the planning network, and count the number of super long single chains;

Step A2: Perform recursive edge processing on all nodes of the planning network;

In step A3, the node with the degree 2 in the network to be planned is selected in turn, and a ring is calculated by the looping algorithm with the selected node as a starting point, wherein the degree refers to the number of links connecting other nodes on the node, for example, one node Connected to the other two nodes, the degree of the node is 2;

Step A4, identifying the number of nodes, rings, and ring numbers on the ring;

Step A5, removing the judged looped edge;

In step A6, the process proceeds to step A3 until all the rings included in the network to be planned are counted.

Optionally, the looping algorithm is as follows:

Step B1, for each node, find the opposite node as its own neighbor node (except the uplink direct neighbor) through the connection, and temporarily store the neighbor node information, and store only one direction neighbor for the first selected node;

Step B2, selecting a node with a degree of 2 on the access layer to start calculation;

Step B3: Find a neighbor along a connection direction, and generate a neighbor set of the node (the starting node only follows a certain direction);

Step B4: According to the breadth-first algorithm, each neighbor node of the same level searches for neighbor information according to the connection information, and generates a neighbor node set other than the uplink direct neighbor;

Step B5, in each of the neighbor sets to find out whether there is a starting node, and if so, proceeds to step B6, and if not, proceeds to step B7;

In step B6, it is determined whether there is any neighbor information. If there is no neighbor information in each direction, the search ends, indicating that the node is the starting point, and there is no loop link, that is, a chain link, and if there is neighbor information, Then proceeds to step B2;

In step B7, if the starting node is found, the calculated path constitutes a ring (the rate of the recording ring, the node on the ring).

It should be noted that a network can be divided into three levels according to logical relationship, which are a core layer, an aggregation layer, and an access layer. Correspondingly, the embodiment of the present invention proposes two clock planning scenarios: A network-wide scenario and an incremental network scenario, where the network-wide scenario refers to planning from the core layer, aggregation layer planning, and access layer planning, and an external clock source needs to be specified at the core layer, which is applicable to a newly opened network; An incremental network scenario refers to a ring-shaped clock link (or a chain clock link) that specifies an aggregation layer (or access layer), with one of the other clock links in the ring-shaped clock link or Two shared nodes inject a clock source into the ring. This clock source is an extracted Ethernet clock and is suitable for partially changing (or adding) a clock source network in an already opened network. Optionally, the external clock of the BITS (Building Integrated Timing Supply System) is used as an external clock source.

It can be understood by those skilled in the art that the network to be planned becomes a set of a ring clock link and a chain clock link after being split, and the clock plan for the planned network becomes a target for each ring clock. Clock planning for road and chain clock links. Each clock link after splitting only needs to track the clock signal of the respective clock injection node, wherein the clock injection node can track an external clock source (such as a BITS external clock), and can also track the clock signals of other clock links ( The Ether Clock is also used to track the clock signal of its internal crystal oscillator. The clock injection nodes of each clock link cooperate with each other to form a clock tracking relationship of the entire network, so that the entire network to be planned can be clocked.

Step S20, determining, according to the clock planning instruction, a planning manner of the clock link, where the planning mode is a ring mode or a shortest path mode;

In this embodiment, two planning modes are provided for the user to select, which are respectively a ring mode and a shortest path mode, where a scenario in which all nodes are required to track the same clock source may be used in a ring mode, and a scenario in which the quality of the clock signal transmission is required may be adopted. The shortest path method.

Step S30: Determine a clock tracking direction of each node on the clock link according to the determined planning mode and a clock injection node of the clock link.

In this embodiment, after determining the planning mode of the clock link and the clock injection node of each clock link, the clock planning operation of the clock link is automatically started to determine the clock tracking direction of the node on the clock link, and then It can accurately track the clock signal of the clock injection node and can switch the clock tracking relationship when the fault occurs. The clock planning operation is performed according to the following constraint rules:

(1) In the ring mode planning, the BITS external clock has the primary and backup points, one master and one standby; in the shortest path mode planning, the BITS external clock has no active/standby points and is the primary clock;

(2) The BITS external clock can only inject clock signals from the ring clock link of the core layer;

(3) The clock signal can only flow from the upper ring/chain to the lower ring/chain, and the clock signal of the lower ring/chain cannot flow to the upper ring/chain.

The clock planning method in this embodiment splits the network to be planned into a set of a ring clock link and a chain clock link, and then adopts a specified planning mode for each ring clock link and each chain clock. The link automatically performs the clock planning operation. The embodiment of the present invention does not require manual planning, reduces the probability of occurrence of errors, and reduces the operational difficulty of clock planning.

Optionally, based on the first embodiment, a second embodiment is provided. In this embodiment, when the clock link is a ring clock link and the ring clock link includes a single clock injection node, the foregoing Step S30 includes:

Determining, in the ring mode, that the planned mode of the clock injection node is a node with a larger node identifier;

Setting the clock injection node to the determined direction of the node as a clock tracking direction;

Setting a connection port of any one of the ring clock link except the clock injection node and a previous node in the clock tracking direction as a high priority clock port, and the ring clock chain The connection port of any node other than the clock injection node on the road and the next node in the clock tracking direction is set as a low priority clock port.

This embodiment is illustrated by the ring clock link shown in FIG. 2. The node 1 shown in FIG. 2 is a clock injection node, and the planning of the ring clock link is as follows:

Step 1. If the clock injection of the node 1 is an external clock injection, the connection port of the node 1 and the external clock source is the external clock port, and the priority is the highest (1). If the clock injection of the node 1 is the Ethernet clock injection, then The clock source needs to be planned for node 1, because it has been planned to be completed in the previous ring;

Step 2: Obtain the node identifiers of the nodes 1 (node 2 and node 6) of the node 1, and set the direction of the nodes with the node 1 to the node identifier as the clock tracking direction (taking node 1 to node 2 as an example, here, The smaller the value of the node identifier is, the larger the node identifier is. However, this application does not limit this;

Step 3: sequentially select each node except node 1 (in order, node 2, 3, 4, 5, 6) along the clock tracking direction, and select the selected node with the previous node in the clock tracking direction (in order The connection port connected to nodes 1, 2, 3, 4, and 5) is used as the extracted Ethernet clock port with the highest priority (1); the selected node and the next node in the clock tracking direction (in order, node 3, The connection port of 4, 5, 6, and 1) is used as the Ethernet clock port, and the priority is second (2). Repeat step 3 until the clock planning for node 6 is completed.

It can be understood by those skilled in the art that clock planning is performed by the above technical solution, and each node except the clock injection node on the ring clock link tracks the previous node in the clock tracking direction through the respective high priority clock port. The clock signal is such that each node on the ring clock link except the clock injection node is finally synchronized with the clock of the clock injection node, and the clock injection node does not extract the clock from the adjacent node, thereby ensuring the clock When switching, the ring clock link does not form a timing loop.

Optionally, based on the first embodiment, a third embodiment is proposed. In this embodiment, when the clock link is a ring clock link and the ring clock link includes a main clock injection node and a standby clock. When the node is injected, the above step S30 includes:

When the determined planning mode is the ring mode, determining whether the primary clock injection node is adjacent to the standby clock injection node, and if the primary clock injection node is adjacent to the standby clock injection node, Determining, by the clock injection node, the direction of the main clock injection node is a clock tracking direction, and if the main clock injection node is not adjacent to the standby clock injection node, determining a neighboring node of the main clock injection node The node in the middle identifies a larger node, and the direction in which the primary clock is injected into the node to the determined node is set to a clock tracking direction;

Setting a connection port of the ring clock link except the main clock injection node to a node of the previous node in the clock tracking direction as a high priority clock port, and the ring clock A connection port of any node other than the standby clock injection node and the next node of the clock tracking direction is set as a low priority clock port.

It should be noted that, in this embodiment, the user is required to specify the primary/secondary clock injection node for the clock link as needed, so that the clock link can perform the switching of the primary and secondary clock sources when needed, thereby improving the stability of the clock synchronization.

This embodiment is illustrated by the ring clock link shown in FIG. 3, and node 1 and node shown in FIG. 5 respectively, the master clock injection node and the standby clock injection node specified by the user-triggered clock planning instruction, wherein the planning of the ring clock link is as follows:

Step 1: Identify whether the clock injection of the node 1/node 5 is an external clock injection. If the clock injection of the node 1/node 5 is an external clock injection, the connection port of the node 1/node 5 and the external clock source is used as an external clock port. The highest priority is 1 (1). If the clock injection of the node 1/node 5 is not injected by the external clock, the clock source of the node 1/node 5 need not be planned because it has been planned to be completed in the previous ring;

In step 2, it is determined whether node 1 and node 5 are adjacent. If node 1 is adjacent to node 5, the direction of node 5 to node 1 is set to the clock tracking direction. If node 1 and node 5 are not adjacent, the node is acquired. 1 The node identifier of the adjacent node (node 2 and node 6), the direction of the node with the node 1 to the node identification is set to the clock tracking direction (in this example, node 1 and node 5 are not adjacent, and node 1 to node) 2 directions as an example);

Step 3: The connection port of any node except the node 1 on the ring clock link and the previous node in the clock tracking direction is used as the extracted Ethernet clock port, and the priority is the highest (1); The connection port of any node other than the node 5 on the ring clock link and the next node in the clock tracking direction is taken as the Ethernet clock port, and the priority is second (2).

It can be understood by those skilled in the art that the clock tracking direction determined by the above steps can be used as the primary clock tracking direction, and the reverse direction of the clock tracking direction is used as the standby clock tracking direction, so that each node on the ring preferentially passes through the respective The high priority clock port tracks the clock signal and tracks the clock signal through the respective low priority clock ports after clock switching.

Optionally, based on the third embodiment, a fourth embodiment is provided. In this embodiment, setting a clock injection node for the split clock link in the foregoing step S10 includes:

When the clock link is a ring clock link, and the ring clock link and at least one other ring clock link communicate with each other to form a clock domain, each ring clock chain in the clock domain is sequentially extracted. The road acts as a ring clock link to be set;

Determining, when the extracted ring clock link to be set includes the first clock injection node, determining whether the ring clock link that is connected to the ring link to be set and not set includes the second clock injection node, The first clock injection node is a primary clock injection node, the second clock injection node is a standby clock injection node, or the first clock injection node is a standby clock injection node, and the second clock injection node is The main clock is injected into the node;

Acquiring the ring clock link to be set and the adjacent and unset ring when the ring clock link that is connected to the ring clock link that is to be set and not set includes the second clock injection node a shared node between clock links;

The shared node is virtualized as the second clock injection node of the ring clock link to be set, and the shared node is virtualized as the ring clock chain adjacent to the ring clock link to be set and not set. The first clock of the path is injected into the node, and the ring clock link to be set is updated to the set ring clock link.

It should be noted that the first clock injection node and the second clock injection node described in this embodiment are all external clock injections, and are respectively set as a main clock injection node and a standby clock injection node in response to a user's clock planning instruction. For example, referring to FIG. 4, the clock domain shown in FIG. 4 is composed of three ring clock links, wherein the node 2 is connected to the first BITS external clock source, and is set as the main clock injection node, where the node 2 is located. The ring clock link is abbreviated as the main ring; the node 10 is connected to the second BITS external clock source, and is set as the standby clock injection node, and the ring clock link where the node 10 is located is simply referred to as the backup ring, and the primary ring and the standby are prepared. The loops between the loops are referred to as interconnect loops, ie, looped clock links formed by nodes 14, 5, 6, 7, 12, and 13. In other embodiments, the number of interconnecting rings can be multiple. The following describes the setting of the clock injection node in the clock domain shown in FIG.

When a clock injection node is set for each ring clock link in the clock domain, each ring clock link in the clock domain is sequentially extracted as a ring clock link to be set according to the connection sequence of the primary ring to the backup ring. Alternatively, each ring clock link in the clock domain is sequentially extracted as a ring clock link to be set according to the connection sequence of the backup ring to the primary ring. In this example, the primary ring where the node 1 is located is first extracted as the ring clock chain to be set. A person skilled in the art can understand that, based on the above technical solution, node 14 and node 5 are virtualized as one node here, and are used as a backup clock of the primary ring to inject the node, and as an interconnection ring (nodes 14, 5, 6). , 7, 12, and 13) The main clock is injected into the node, and the main ring is updated to the set ring clock link.

Then, the interconnecting ring is extracted as a ring clock link to be set, and node 12 and node 7 are virtualized as one node, as a backup clock injection node of the interconnect ring, and as a master clock injection node of the standby ring. The interconnect ring is updated to the ring clock link that has been set. At this time, the clock injection node of the ring clock link in the entire clock domain has been set.

Finally, the clock planning is performed on each ring clock link in the clock domain. For details, refer to the third embodiment, and details are not described herein.

Optionally, in this embodiment, when the standby clock injection node includes a plurality of actual nodes, the standby clock is injected into any actual node included in the node and the previous actual direction in the clock tracking direction. The connection port of the node is set as a high priority clock port, and the standby clock is injected into any actual node included in the node and the connection port of the next actual node included in the standby clock injection node and in the clock tracking direction. Is a low priority clock port.

In addition, when clocking each ring clock link in the clock domain, if the main clock injection node of the currently planned ring clock link is a virtual node, the virtual node includes the previous ring clock link. The actual node that receives the clock signal firstly is injected into the actual node, and the reverse direction of the direction from the actual node to the other nodes in the virtual node is taken as the clock tracking direction (main clock tracking direction) of the currently planned ring clock link.

Optionally, based on the first embodiment, a fifth embodiment is provided. In this embodiment, when the clock link is a ring clock link and the ring clock link includes a single clock injection node, the foregoing Step S30 includes:

When the determined planning mode is the shortest path mode, each node except the clock injection node is sequentially selected along the two sides of the clock injection node;

When the node is selected, it is determined whether the currently selected node is the same node;

When the currently selected node is a different node, the connection port of the selected node and the previous node in the direction is set as a high priority clock port, respectively, and the connection port of the selected node and the next node in the direction is set to a low priority clock port, and when the currently selected node is a neighboring node, the step of stopping the selected node is stopped;

When the currently selected node is the same node, the two selected ports of the same node are set as the high priority clock port and the low priority clock port respectively, and the steps of stopping the selected node are stopped according to the preset priority rule. .

This embodiment is illustrated by the ring clock link shown in FIG. 5. The node 1 shown in FIG. 5 is a clock injection node connected to the external clock source of the BITS. The planning of the ring clock link is as follows:

Step 1: Set the connection port of the node 1 and the BITS external clock source to the external clock port with the highest priority (1). In addition, if the clock injection of the node 1 is the Ethernet clock injection, it is not necessary to plan the clock source for the node 1. Because it has been planned in the previous ring;

Step 2: Find the next node along the two sides of the ring of the node 1, and record the hop count of the two nodes (node 2 and node 6) as N (N=1, 2, 3...);

Step 3, the two nodes (hops = N, nodes 2, 6) and the previous node in the respective direction (here, node 1) are connected to the Ethernet clock port, with the highest priority (1); The two ports (nodes 2, 6) are respectively connected to the next node of the respective direction (here, nodes 3, 5) as the extracted clock port, and the priority is second (2);

Step 4, it is determined whether the next node found respectively is mutually mutually (hops = N) node, if yes, it indicates that the ring clock link has been planned to complete, if not, then jump to step 5;

Step 5, the number of hops of the two (next) nodes found is recorded as N+1;

Step 6, it is determined whether the two nodes (hop number N+1) are the same node (node name/IP is the same), and if yes, jump to step 7, if not, then the two nodes (hop count = Based on N+1), go to step 2;

Step 7: Enter this step to indicate that it is the last node with the same hop count (such as node 4). The connection ports on both sides of the ring are used as the extracted Ethernet clock ports. The preset priority rules are as follows:

If the port types of the two ports are different, set the optical port to a high-priority clock port and the electrical port to a low-priority clock port.

If the port types of the two ports are the same, set the port with the higher port rate as the high priority clock port and the other port to the lower priority clock port.

If the port rates of the two ports are the same, set the port with the larger port number as the high priority clock port and the other port to the lower priority clock port.

If the port numbers of the two ports are the same, set the port with the larger slot number as the high priority clock port and the other port to the lower priority clock port.

Optionally, based on the first embodiment, a sixth embodiment is provided. In this embodiment, when the clock link is an annular clock link that includes multiple clock injection nodes, the foregoing step S30 includes:

And obtaining, in the shortest path mode, the hop count of each of the first tracking nodes from each clock injection node, wherein the first tracking node is the ring clock link except The clock is injected into other nodes than the node;

Obtaining a clock injection node corresponding to a minimum number of hops in the corresponding hop count of each of the first tracking nodes, and setting a reverse direction of each of the first tracking nodes to the acquired clock injection node as a clock tracking direction;

Setting a connection port of each of the first tracking node and a previous node in the clock tracking direction as a high priority clock port, and placing each of the first tracking nodes under the clock tracking direction The connection port of a node is set to a low priority clock port.

This embodiment is illustrated by the ring clock link shown in FIG. 6. The node 2, the node 4, and the node 8 shown in FIG. 6 are all clock injection nodes, and the planning of the ring clock link is as follows:

It should be noted that N(TTL, PORT): TTL and PORT respectively represent the hop count of the node N to the specified clock injection node and the connection port.

Step 1: sequentially select a clock injection node to identify whether the clock injection of the currently selected clock injection node is an external clock injection. If yes, the clock is injected into the connection port of the node and the external clock source as an external clock port, and the priority is the highest. (1), and the connection port of the clock injection node and the adjacent node is set to the Ethernet clock port, the priority is second (2); if not, the clock source of the clock injection node is not required to be planned. Because it has been planned in the previous ring;

Searching for the next hop nodes X and Y on both sides of the clock injection node;

Step 2, find the connection ports of X and Y with the previous hop node, and record X (TTL, PORT), Y (TTL, PORT) for X and Y, respectively, where TTL=1, 2, 3...

Step 3, based on X and Y respectively, respectively searching for next hop nodes X' and Y';

Step 4: determining whether the next hop node X' and Y' are Y and X, and if so, indicating that the currently selected clock injection node is used as the injection source, and the process jumps to step 1, and if not, the jump To step 5;

Step 5, determining whether the next hop node X' and Y' are the same node, and if so, indicating chasing Go back to the same tail node, record X' (TTL++, PORT), jump to step 1, if not, then X' as X, and Y' as Y, and jump to step 2;

Step 6. After each clock injection node on the ring clock link is analyzed, compare the TTL values of the same nodes under each clock injection node, and keep the minimum. So far, each node has the highest priority. The clock source has been determined, that is, the clock injection node corresponding to the minimum hop count of each node corresponding to the clock injection node is obtained, and each node is set to the opposite direction of the acquired clock injection node. Tracking direction for the clock (main clock tracking direction);

Step 7. Perform clock planning for each node based on the clock tracking direction determined by each node.

In addition, when planning the ring clock link in this embodiment, on the basis of the foregoing technical solutions, the following constraint rules may also be used to limit:

(1) If the external clock is injected, the external clock has the highest priority (1);

(2) A normal ring (clock injection is a non-external clock injection) can only have at most two clock injection nodes and does not consider the clock source of the clock injection node;

(3) When two clock injection nodes are separated by one node (such as node 2 and node 4 in FIG. 6), the two clock injection nodes cannot draw clocks to the separated nodes (to avoid looping when they are bad), for example, After step 7 above, step 8 is further included:

It is identified whether the adjacent nodes of each node on the ring are clock injection nodes, and if so, the two clock injection nodes that are unset are corresponding to the extracted Ethernet clock ports of the separated nodes.

Optionally, for the external clock injection node, the highest priority is the external clock injection (1), and the priority 2, 3 is the extracted clock on both sides. Optionally, the external clock injection node is pumped with the Ethernet clock on both sides. The priority rules are as follows:

The highest port rate is 2, and the other is 3.

If the port rates are the same, the port number is smaller and the other is 3;

If the port numbers are also the same, the slot number is smaller and the other is 3.

Optionally, based on the first embodiment, a seventh embodiment is proposed. In this embodiment, when When the clock link is a chain clock link, the foregoing step S30 includes:

When the determined planning mode is the shortest path mode, the clock is injected into the node as a starting point of the chain clock link, and the clock is injected into the node to the direction of other nodes in the chain clock link. The link direction of the chain clock link;

Setting a connection port of each second tracking node and a previous node in the link direction as a clock port, wherein the second tracking node is the clock injection node except the clock injection node Other nodes outside.

This embodiment is illustrated by the chain clock link shown in FIG. 7. The node 1 shown in FIG. 7 is a clock injection node of the chain clock link (nodes 1, 2, and 3), and the ring clock is located The clock injection node of the link (nodes 1, 4, 5, 6), wherein the planning of the chain clock link where the node 1 is located is as follows:

First, identifying a clock injection node on the chain clock link as a starting point of the chain clock link and injecting the clock into a node to the direction of other nodes in the chain clock link Link direction of the chain clock link;

Then, the connection port of each second tracking node and the previous node in the link direction is set as a clock port, wherein the second tracking node is injected in the chain clock link except the clock Other nodes than nodes.

It should be noted that, since the chain clock link in this embodiment is a unidirectional chain, that is, only one side has clock injection, and each second tracking node unidirectionally extracts a clock.

Optionally, if there are multiple connections between the nodes (such as node 2 and node 3 in FIG. 7), the two connection ports with the highest priority are selected to set the Ethernet clock, wherein the priority rules are as follows:

If the port type is different, the optical port has a higher priority.

If the port types are the same, the port rate is high and the priority is high.

If the port rate is the same, the port number has a higher priority;

If the port numbers are the same, the slot number has a higher priority.

Optionally, based on the seventh embodiment, an eighth embodiment is proposed, in the embodiment, when the chain When the clock link includes two clock injection nodes, the step of setting each second tracking node and the connection port of the previous node in the link direction as a clock port includes:

Obtaining, by each second tracking node, a hop count from each of the clock injection nodes in each of the link directions;

Obtaining a clock injection node corresponding to a minimum number of hops in each hop count of each second tracking node, and setting a reverse direction of each of the second tracking nodes to the acquired clock injection node as a clock tracking direction;

Setting a connection port of each of the second tracking node and a previous node in the clock tracking direction as a high priority clock port, and placing each of the second tracking nodes under the clock tracking direction The connection port of a node is set to a low priority clock port.

This embodiment is described by the chain clock link (nodes 3, 5, 6, and 7) shown in FIG. 8. Both node 3 and node 7 are clock injection nodes, wherein the planning of the chain clock link is as follows Shown as follows:

Step 1, obtaining the hop count of the node 5 and the node 6 from the node 3 and the node 7;

Step 2: Acquire a clock injection node corresponding to the minimum hop count of the corresponding hop count of the node 5 and the node 6, and set the reverse direction of the node 5 and the node 6 to the acquired clock injection node to the clock tracking direction respectively (node 5 to The hop count of node 3 is the smallest, the clock tracking direction of node 5 is 3→5; the hop count of node 6 to node 7 is the smallest, and the clock tracking direction of node 6 is 7→6);

Step 3, the node 5 is connected to the previous node (node 3) in the clock tracking direction as the extracted Ethernet clock port, with the highest priority (1), and the node 5 is in the clock tracking direction. The connection port of a node (node 6) is used as the extracted Ethernet clock port, and the priority is second (2); the connection port of the node 6 and the previous node (node 7) in the clock tracking direction is used as the extracted Ethernet clock port. The highest priority is (1), and the connection port of the node 6 and the next node (node 5) in the clock tracking direction is taken as the Ethernet clock port, and the priority is second (2).

Optionally, before starting the planning, identify whether the clock injection of the node 3/7 is an external clock injection, and when the clock injection of the node 3/7 is an external clock injection, connect the node 3/7 with the respective external clock source. The port is set to the external clock port and has the highest priority (1). If the clock injection of the node 3/7 is injected by the Ethernet clock, you do not need to plan the clock source for the node 3/7 because the ring is located in the node 3/7. It has been planned to be completed.

In this embodiment, the connection ports of the two clock injection nodes and the adjacent nodes on the chain clock link may be set as the Ethernet clock port, and the priority is lower than the clock source, so that the two ends of the chain The clock injection node can switch to its respective low priority clock port for clock tracking when the currently tracked clock source fails.

Optionally, if there are multiple links between nodes (such as node 5 and node 6 in Figure 8), since the currently planned chain clock link is a bidirectional chain, one link needs to be selected and the link is located at different nodes. The connection port acts as a mutual pumping clock. The priority rules are as follows:

For a link with a high link rate, if the rates are equal, select the port number of the port connected to the two ends of the link and the link with a large value. If the port number and the value are equal, select a link to plan.

The embodiment of the present invention further provides a clock planning apparatus. Referring to FIG. 9, in the first embodiment, the clock planning apparatus includes:

The splitting module 100 is configured to: when detecting a clock planning instruction, split the network to be planned into at least one clock link based on the clock planning instruction, and set a clock injection node for the split clock link;

In this embodiment, a complete subnet may be used as a network to be planned in response to a user operation, or a network topology formed by a part of nodes in a subnet may be used as a network to be planned; after the network to be planned is determined, the splitting module 100 is based on The detected clock planning instruction splits the network to be planned into at least one clock link, wherein the split clock link is ring-shaped or chain-shaped, and the clock link is split as follows:

Step A1: Find a single chain of all nodes of the planning network, and count the number of super long single chains;

Step A2: Perform recursive edge processing on all nodes of the planning network;

In step A3, the node with the degree 2 in the network to be planned is selected in turn, and a ring is calculated by the looping algorithm with the selected node as a starting point, wherein the degree refers to the number of links connecting other nodes on the node, for example, one node Connected to the other two nodes, the degree of the node is 2;

Step A4, identifying the number of nodes, rings, and ring numbers on the ring;

Step A5, removing the judged looped edge;

In step A6, the process proceeds to step A3 until all the rings included in the network to be planned are counted.

Optionally, the looping algorithm is as follows:

Step B1, for each node, find the opposite node as its own neighbor node (except the uplink direct neighbor) through the connection, and temporarily store the neighbor node information, and store only one direction neighbor for the first selected node;

Step B2, selecting a node with a degree of 2 on the access layer to start calculation;

Step B3: Find a neighbor along a connection direction, and generate a neighbor set of the node (the starting node only follows a certain direction);

Step B4: According to the breadth-first algorithm, each neighbor node of the same level searches for neighbor information according to the connection information, and generates a neighbor node set other than the uplink direct neighbor;

Step B5, in each of the neighbor sets to find out whether there is a starting node, and if so, proceeds to step B6, and if not, proceeds to step B7;

In step B6, it is determined whether there is any neighbor information. If there is no neighbor information in each direction, the search ends, indicating that the node is the starting point, and there is no loop link, that is, a chain link, and if there is neighbor information, Then proceeds to step B2;

In step B7, if the starting node is found, the calculated path constitutes a ring (the rate of the recording ring, the node on the ring).

It should be noted that a network can be divided into three levels according to logical relationship, which are a core layer, an aggregation layer, and an access layer. Correspondingly, the embodiments of the present invention provide two clock planning scenarios: a full network scenario and an incremental network scenario, where the network-wide scenario refers to planning from the core layer, convergence layer planning, and access layer planning, and Specify an external clock source at the core layer for a newly opened network; an incremental network scenario refers to a ring clock link (or chain clock link) that specifies an aggregation layer (or access layer) to One or two shared nodes of the ring clock link and other clock links inject a clock source into the ring. This clock source is an extracted Ethernet clock, which is suitable for partial change (or new) in the opened network. Clock source network. Optionally, the external clock of the BITS (Building Integrated Timing Supply System) is used as an external clock source.

It can be understood by those skilled in the art that the network to be planned becomes a set of a ring clock link and a chain clock link after being split, and the clock plan of the network to be planned becomes for each ring. Clock planning for clock links and chain clock links. Each clock link after splitting only needs to track the clock signal of the respective clock injection node, wherein the clock injection node can track an external clock source (such as a BITS external clock), and can also track the clock signals of other clock links ( The Ether Clock is also used to track the clock signal of its internal crystal oscillator. The clock injection nodes of each clock link cooperate with each other to form a clock tracking relationship of the entire network, so that the entire network to be planned can be clocked.

The determining module 200 is configured to: determine, according to the clock planning instruction, a planning manner of the clock link, where the planning mode is a ring mode or a shortest path mode;

In this embodiment, two planning modes are provided for the user to select, which are respectively a ring mode and a shortest path mode, where a scenario in which all nodes are required to track the same clock source may be used in a ring mode, and a scenario in which the quality of the clock signal transmission is required may be adopted. The shortest path method.

The planning module 300 is configured to determine a clock tracking direction of each node on the clock link according to the determined planning manner and a clock injection node of the clock link.

In this embodiment, after determining the planning mode of the clock link and the clock injection node of each clock link, the planning module 300 automatically starts a clock planning operation on the clock link to determine the clock of each node on the clock link. Tracking direction, in turn, can accurately track the clock signal of the clock injection node, and can switch the clock tracking relationship when the fault occurs. The planning module 300 performs clock planning operations according to the following constraint rules:

(1) In the ring mode planning, the BITS external clock has the primary and backup points, one master and one standby; in the shortest path mode planning, the BITS external clock has no active/standby points and is the primary clock;

(2) The BITS external clock can only inject clock signals from the ring clock link of the core layer;

(3) The clock signal can only flow from the upper ring/chain to the lower ring/chain, and the clock signal of the lower ring/chain cannot flow to the upper ring/chain.

The clock planning apparatus in this embodiment splits the network to be planned into a set of a ring clock link and a chain clock link, and then adopts a specified planning mode for each ring clock link and each chain clock. The link automatically performs the clock planning operation. The embodiment of the present invention does not require manual planning, reduces the probability of occurrence of errors, and reduces the operational difficulty of clock planning.

Optionally, based on the first embodiment, in the second embodiment, the planning module 300 is set Determining: a neighboring node of the clock injection node when the clock link is a ring clock link and the ring clock link includes a single clock injection node, and the determined planning mode is a ring mode. a node in the middle identifies a larger node; a direction in which the clock is injected into the node to the determined node is set to a clock tracking direction; and any one of the ring clock links except the clock injection node is injected a node and a connection port of a previous node in the clock tracking direction are set as a high priority clock port, and any node other than the clock injection node on the ring clock link is tracked at the clock The connection port of the next node in the direction is set to the low priority clock port.

This embodiment is illustrated by the ring clock link shown in FIG. 2. The node 1 shown in FIG. 2 is a clock injection node. The planning module 300 plans the ring clock link as follows:

Step 1. If the clock injection of the node 1 is an external clock injection, the connection port of the node 1 and the external clock source is the external clock port, and the priority is the highest (1). If the clock injection of the node 1 is the Ethernet clock injection, then The clock source needs to be planned for node 1, because it has been planned to be completed in the previous ring;

Step 2: Obtain a node identifier of a node 1 node (node 2 and node 6), and set a direction of a node 1 to a node with a larger node identifier as a clock tracking direction (taking node 1 to node 2 as an example);

Step 3: Select each node except the node 1 (nodes 2, 3, 4, 5, and 6 in turn) along the clock tracking direction, and select the selected node with the previous node in the clock tracking direction (in order, the node) 1, 2, 3, 4, 5) connected ports as the extracted Ethernet clock port, and the highest priority (1); the selected node and the next node in the clock tracking direction (in order, nodes 3, 4, The connection port of 5, 6, and 1) is used as the Ethernet clock port, and the priority is second (2). Repeat step 3 until the clock planning for node 6 is completed.

It can be understood by those skilled in the art that clock planning is performed by the above technical solution, and each node except the clock injection node on the ring clock link tracks the previous node in the clock tracking direction through the respective high priority clock port. The clock signal is such that each node on the ring clock link except the clock injection node is finally synchronized with the clock of the clock injection node, and the clock injection node does not extract the clock from the adjacent node, thereby ensuring the clock When switching, the ring clock link does not form a timing loop.

Optionally, based on the first embodiment, in the third embodiment, the planning module 300 is set The master clock is determined when the clock link is a ring clock link and the ring clock link includes a master clock injection node and a backup clock injection node, and the determined planning mode is a ring mode. Whether the injection node is adjacent to the standby clock injection node, and if the main clock injection node is adjacent to the standby clock injection node, setting a direction of the standby clock injection node to the main clock injection node as a clock Tracking direction, if the primary clock injection node is not adjacent to the standby clock injection node, determining a node with a larger node identifier in a neighboring node of the primary clock injection node, and injecting the primary clock into the node Determining a direction of the node to be a clock tracking direction; and connecting any node other than the main clock injection node on the ring clock link to a previous node in the clock tracking direction The port is set as a high priority clock port, and the connection port of any node other than the standby clock injection node and the next node of the clock tracking direction on the ring clock link is set to Priority clock port.

It should be noted that, in this embodiment, the user is required to specify the primary/secondary clock injection node for the clock link as needed, so that the clock link can perform the switching of the primary and secondary clock sources when needed, thereby improving the stability of the clock synchronization.

This embodiment is illustrated by the ring clock link shown in FIG. 3. The node 1 and the node 5 shown in FIG. 3 are respectively a master clock injection node and a backup clock injection node specified by a user-triggered clock planning instruction. The planning of the ring clock link by module 300 is as follows:

Step 1: Identify whether the clock injection of the node 1/node 5 is an external clock injection. If yes, the connection port of the node 1/node 5 and the external clock source is used as an external clock port, and the priority is the highest (1). If not, It is not necessary to plan the clock source for node 1/node 5 because it has been planned to be completed in the previous ring;

Step 2, it is determined whether the node 1 and the node 5 are adjacent, and if so, the direction of the node 5 to the node 1 is set to the clock tracking direction, and if not, the node identifier of the node 1 (node 2 and node 6) of the node 1 is acquired. The direction from the node 1 to the node with the node identifier is set to the clock tracking direction (in this example, node 1 and node 5 are not adjacent, and node 1 to node 2 are taken as an example);

Step 3: The connection port of any node except the node 1 on the ring clock link and the previous node in the clock tracking direction is used as the extracted Ethernet clock port, and the priority is the highest (1); The connection port of any node other than the node 5 on the ring clock link and the next node in the clock tracking direction is taken as the Ethernet clock port, and the priority is second (2).

It can be understood by those skilled in the art that the clock tracking direction determined by the above steps can be used as the primary clock tracking direction, and the reverse direction of the clock tracking direction is used as the standby clock tracking direction, so that each node on the ring preferentially passes through the respective The high priority clock port tracks the clock signal and tracks the clock signal through the respective low priority clock ports after clock switching.

Optionally, based on the third embodiment, in the fourth embodiment, the splitting module 100 includes:

And an extracting unit, configured to: when the clock link is a ring clock link, and the ring clock link and at least one other ring clock link communicate with each other to form a clock domain, sequentially extracting the clock domain Each ring clock link acts as a ring clock link to be set;

a determining unit, configured to: determine, when the extracted ring clock link to be set includes the first clock injection node, whether the ring clock link that is not connected to the ring link to be set includes a second clock Injecting a node, wherein the first clock injection node is a primary clock injection node, the second clock injection node is a standby clock injection node, or the first clock injection node is a standby clock injection node, and the second clock The injection node is injected into the node as a master clock;

An acquiring unit, configured to: when the ring clock link that is connected to the to-be-set ring clock link and that is not set includes the second clock injection node, obtain the ring clock link to be set and the adjacent And a shared node between the ring clock links that are not set;

a setting unit, configured to: virtualize the shared node as a second clock injection node of the ring clock link to be set, and virtualize the shared node as adjacent to the ring clock link to be set And setting a first clock injection node of the ring clock link, and updating the to-be-set ring clock link to a set ring clock link.

It should be noted that the first clock injection node and the second clock injection node described in this embodiment are all external clock injections, and are respectively set as a main clock injection node and a standby clock injection node in response to a user's clock planning instruction. For example, referring to FIG. 4, the clock domain shown in FIG. 4 is composed of three ring clock links, wherein the node 2 is connected to the first BITS external clock source, and is set as the main clock injection node, where the node 2 is located. The ring clock link is abbreviated as the main ring; the node 10 is connected to the second BITS external clock source, and is set as the standby clock injection node, and the ring clock link where the node 10 is located is simply referred to as the backup ring, and the primary ring and the standby are prepared. The rings between the rings are called interconnecting rings, ie nodes 14, 5, 6, 7, 12 and 13 Looped clock link. In other embodiments, the number of interconnecting rings can be multiple. The following describes the setting of the clock injection node by the split module 100 in the clock domain shown in FIG.

When a clock injection node is set for each ring clock link in the clock domain, each ring clock link in the clock domain is sequentially extracted as a ring clock link to be set according to the connection sequence of the primary ring to the backup ring. Alternatively, each ring clock link in the clock domain is sequentially extracted as a ring clock link to be set according to the connection sequence of the backup ring to the primary ring. In this example, the primary ring where the node 1 is located is first extracted as the ring clock chain to be set. A person skilled in the art can understand that, based on the above technical solution, node 14 and node 5 are virtualized as one node here, and are used as a backup clock of the primary ring to inject the node, and as an interconnection ring (nodes 14, 5, 6). , 7, 12, and 13) The main clock is injected into the node, and the main ring is updated to the set ring clock link.

Then, the interconnecting ring is extracted as the ring clock link to be set, and the node 12 and the node 7 are virtualized as one node, as the standby clock injection node of the interconnecting ring, and as the primary clock injection node of the standby ring, and the interconnecting ring is updated to have been Set the ring clock link. At this time, the clock injection node of the ring clock link in the entire clock domain has been set.

Finally, the clock planning is performed on each ring clock link in the clock domain. For details, refer to the third embodiment, and details are not described herein.

Optionally, in this embodiment, the planning module 300 is further configured to: when the standby clock injection node includes a plurality of actual nodes, and after setting a clock tracking direction, the standby clock injection node includes The connection port of any actual node and the last actual node in the clock tracking direction is set as a high priority clock port, and the standby clock is injected into any node included in the node and the standby clock injection node includes And the connection port of the next actual node in the clock tracking direction is set to a low priority clock port.

In addition, when clocking each ring clock link in the clock domain, if the main clock injection node of the currently planned ring clock link is a virtual node, the virtual node includes the previous ring clock link. The actual node that receives the clock signal firstly is injected into the actual node, and the reverse direction of the direction from the actual node to the other nodes in the virtual node is taken as the clock tracking direction (main clock tracking direction) of the currently planned ring clock link.

Optionally, based on the first embodiment, in the fifth embodiment, the planning module 300 is configured to: when the clock link is a ring clock link and the ring clock link includes a single clock injection a node, and when the determined planning mode is the shortest path mode, each node except the clock injection node is sequentially selected along the two sides of the clock injection node; when the node is selected, the currently selected node is determined. Whether it is the same node; when the currently selected node is a different node, respectively set the selected node and the connection port of the previous node in the direction to be a high priority clock port, respectively selecting the selected node and the next node in the direction in which it is located The connection port is set to a low priority clock port, and when the currently selected node is a neighboring node, the selected node is stopped; and when the currently selected node is the same node, the selected same according to the preset priority rule The connection ports on both sides of the node are set to the high priority clock port and the low priority clock port, respectively, and the selected node is stopped.

This embodiment is illustrated by the ring clock link shown in FIG. 5. The node 1 shown in FIG. 5 is a clock injection node connected to the external clock source of the BITS, and the planning module 300 plans the ring clock link as follows. Show:

Step 1: Set the connection port of the node 1 and the BITS external clock source to the external clock port with the highest priority (1). In addition, if the clock injection of the node 1 is the Ethernet clock injection, it is not necessary to plan the clock source for the node 1. Because it has been planned in the previous ring;

Step 2: Find the next node along the two sides of the ring of the node 1, and record the hop count of the two nodes (node 2 and node 6) as N (N=1, 2, 3...);

Step 3, the two nodes (hops = N, nodes 2, 6) and the previous node in the respective direction (here, node 1) are connected to the Ethernet clock port, with the highest priority (1); The two ports (nodes 2, 6) are respectively connected to the next node of the respective direction (here, nodes 3, 5) as the extracted clock port, and the priority is second (2);

Step 4, it is determined whether the next node found respectively is mutually mutually (hops = N) node, if yes, it indicates that the ring clock link has been planned to complete, if not, then jump to step 5;

Step 5, the number of hops of the two (next) nodes found is recorded as N+1;

Step 6, it is determined whether the two nodes (hop number N+1) are the same node (node name/IP is the same), and if yes, jump to step 7, if not, then the two nodes (hop count = Based on N+1), go to step 2;

Step 7: Enter this step to indicate that it is the last node with the same hop count (such as node 4). The connection ports on both sides of the ring are used as the extracted Ethernet clock ports. The preset priority rules are as follows:

If the port types of the two ports are different, set the optical port to a high-priority clock port and the electrical port to a low-priority clock port.

If the port types of the two ports are the same, set the port with the higher port rate as the high priority clock port and the other port to the lower priority clock port.

If the port rates of the two ports are the same, set the port with the larger port number as the high priority clock port and the other port to the lower priority clock port.

If the port numbers of the two ports are the same, set the port with the larger slot number as the high priority clock port and the other port to the lower priority clock port.

Optionally, based on the first embodiment, in the sixth embodiment, the planning module 30 is configured to: when the clock link is a ring clock link including multiple clock injection nodes, and determine the location When the planning mode is the shortest path mode, obtain the hop count of each of the first tracking nodes from each clock injection node, where the first tracking node is the clock injection node except the clock injection node. And other nodes; obtaining a clock injection node corresponding to a minimum number of hops in the corresponding hop count of each of the first tracking nodes, and setting each of the first tracking nodes to the opposite direction of the acquired clock injection node Tracking direction for the clock; and setting a connection port of each of the first tracking node and a previous node in the clock tracking direction as a high priority clock port, and each of the first tracking nodes The connection port of the next node in the clock tracking direction is set to the low priority clock port.

This embodiment is illustrated by the ring clock link shown in FIG. 6. The node 2, the node 4, and the node 8 shown in FIG. 6 are both clock injection nodes. The planning module 300 plans the ring clock link as follows. Shown as follows:

It should be noted that N(TTL, PORT): TTL and PORT respectively represent the hop count of the node N to the specified clock injection node and the connection port.

Step 1: sequentially select a clock injection node to identify whether the clock injection of the currently selected clock injection node is an external clock injection. If yes, the clock is injected into the connection port of the node and the external clock source as an external clock port, and the priority is the highest. (1), and inject the clock into the node with The connection port of the adjacent node is set to the Ethernet clock port, and the priority is second (2); if not, the clock source of the clock injection node is not planned, because it is planned to be completed in the previous ring;

Searching for the next hop nodes X and Y on both sides of the clock injection node;

Step 2, find the connection ports of X and Y and the previous hop node, and record X (TTL, PORT), Y (TTL, PORT), TTL=1, 2, 3... for X and Y respectively;

Step 3, based on X and Y respectively, respectively searching for next hop nodes X' and Y';

Step 4: determining whether the next hop node X' and Y' are Y and X, and if so, indicating that the currently selected clock injection node is used as the injection source, and the process jumps to step 1, and if not, the jump To step 5;

Step 5: Determine whether the next hop node X' and Y' are the same node. If yes, the description traces back to the same tail node, and records X' (TTL++, PORT), and jumps to step 1, if not, then Take X' as X, and Y' as Y, and jump to step 2;

Step 6. After each clock injection node on the ring clock link is analyzed, compare the TTL values of the same nodes under each clock injection node, and keep the minimum. So far, each node has the highest priority. The clock source has been determined, that is, the clock injection node corresponding to the minimum hop count of each node corresponding to the clock injection node is obtained, and each node is set to the opposite direction of the acquired clock injection node. Tracking direction for the clock (main clock tracking direction);

Step 7. Perform clock planning for each node based on the clock tracking direction determined by each node.

In addition, when planning the ring clock link in this embodiment, on the basis of the foregoing technical solutions, the following constraint rules may also be used to limit:

(1) If the external clock is injected, the external clock has the highest priority (1);

(2) A normal ring (clock injection is a non-external clock injection) can only have at most two clock injection nodes and does not consider the clock source of the clock injection node;

(3) When two clock injection nodes are separated by one node (such as node 2 and node 4 in FIG. 6), the two clock injection nodes cannot draw clocks to the separated nodes (to avoid looping when they are bad), for example, After step 7 above, step 8 is further included:

Identify whether each adjacent node of each node on the ring is a clock injection node, and if so, revoke the setting The two clock injection nodes are located corresponding to the extracted Ethernet clock ports of their separated nodes.

Optionally, for the external clock injection node, the highest priority is the external clock injection (1), and the priority 2, 3 is the extracted clock on both sides. Optionally, the external clock injection node is pumped with the Ethernet clock on both sides. The priority rules are as follows:

The highest port rate is 2, and the other is 3.

If the port rates are the same, the port number is smaller and the other is 3;

If the port numbers are also the same, the slot number is smaller and the other is 3.

Optionally, based on the first embodiment, in the seventh embodiment, the planning module 300 is configured to: when the clock link is a chain clock link, and the determined planning mode is the shortest path mode, Injecting the clock into a node as a starting point of the chain clock link, and injecting the clock into a node to a direction of other nodes in the chain clock link as a link direction of the chain clock link; And setting a connection port of each second tracking node and a previous node in the link direction as a clock port, wherein the second tracking node is the clock injection node in the chain clock link Other nodes than others.

This embodiment is illustrated by the chain clock link shown in FIG. 7. The node 1 shown in FIG. 7 is a clock injection node of the chain clock link (nodes 1, 2, and 3), and the ring clock is located The clock injection node of the link (nodes 1, 4, 5, 6), wherein the planning module 300 plans the chain clock link of the node 1 as follows:

First, identifying a clock injection node on the chain clock link as a starting point of the chain clock link and injecting the clock into a node to the direction of other nodes in the chain clock link Link direction of the chain clock link;

Then, the connection port of each second tracking node and the previous node in the link direction is set as a clock port, wherein the second tracking node is injected in the chain clock link except the clock Other nodes than nodes.

It should be noted that, since the chain clock link in this embodiment is a unidirectional chain, that is, only one side has clock injection, and each second tracking node unidirectionally extracts a clock.

Optionally, if there are multiple connections between nodes (node 2 and node 3 as shown in FIG. 7), select The two highest priority ports are set to extract the Ethernet clock, where the priority rules are as follows:

If the port type is different, the optical port has a higher priority.

If the port types are the same, the port rate is high and the priority is high.

If the port rate is the same, the port number has a higher priority;

If the port numbers are the same, the slot number has a higher priority.

Optionally, based on the seventh embodiment, in the eighth embodiment, the planning module 300 is configured to: when the chain clock link includes two clock injection nodes, acquire each second tracking node. a hop count from each of the clock injection nodes in each of the link directions; acquiring a clock injection node corresponding to a minimum hop count in each hop count of each second tracking node, and acquiring each second tracking node to obtain The reverse direction of the clock injection node is set to a clock tracking direction; and the connection port of each of the second tracking node and the previous node in the clock tracking direction is set as a high priority clock port, and each The connection port of the second tracking node and the next node in the clock tracking direction is set as a low priority clock port.

This embodiment is illustrated by the chain clock link (nodes 3, 5, 6, and 7) shown in FIG. 8. Both node 3 and node 7 are clock injection nodes, wherein the planning module 300 links the chain clock. The plan is as follows:

Step 1, obtaining the hop count of the node 5 and the node 6 from the node 3 and the node 7;

Step 2: Acquire a clock injection node corresponding to the minimum hop count of the corresponding hop count of the node 5 and the node 6, and set the reverse direction of the node 5 and the node 6 to the acquired clock injection node to the clock tracking direction respectively (node 5 to The hop count of node 3 is the smallest, the clock tracking direction of node 5 is 3→5; the hop count of node 6 to node 7 is the smallest, and the clock tracking direction of node 6 is 7→6);

Step 3, the node 5 is connected to the previous node (node 3) in the clock tracking direction as the extracted Ethernet clock port, with the highest priority (1), and the node 5 is in the clock tracking direction. The connection port of a node (node 6) is used as the extracted Ethernet clock port, and the priority is second (2); the connection port of the node 6 and the previous node (node 7) in the clock tracking direction is used as the extracted Ethernet clock port. The highest priority is (1), and the connection port of the node 6 and the next node (node 5) in the clock tracking direction is taken as the Ethernet clock port, and the priority is second (2).

Optionally, before starting the planning, identify whether the clock injection of the node 3/7 is an external clock injection, and when the clock injection of the node 3/7 is an external clock injection, connect the node 3/7 with the respective external clock source. The port is set to the external clock port and has the highest priority (1). If the clock injection of the node 3/7 is injected by the Ethernet clock, you do not need to plan the clock source for the node 3/7 because the ring is located in the node 3/7. It has been planned to be completed.

In this embodiment, the connection ports of the two clock injection nodes and the adjacent nodes on the chain clock link may be set as the Ethernet clock port, and the priority is lower than the clock source, so that the two ends of the chain The clock injection node can switch to its respective low priority clock port for clock tracking when the currently tracked clock source fails.

Optionally, if there are multiple links between nodes (such as node 5 and node 6 in Figure 8), since the currently planned chain clock link is a bidirectional chain, one link needs to be selected and the link is located at different nodes. The connection port acts as a mutual pumping clock. The priority rules are as follows:

For a link with a high link rate, if the rates are equal, select the port number of the port connected to the two ends of the link and the link with a large value. If the port number and the value are equal, select a link to plan.

In addition, an embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when the computer executable instructions are executed.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be performed by a program to instruct related hardware, such as a processor, which may be stored in a computer readable storage medium, such as a read only memory, disk or optical disk. Wait. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function. This application is not limited to any particular form of hardware and software combination

The above is only a preferred embodiment of the present application, and is not intended to limit the scope of the patent application, and the equivalent structure or equivalent process transformations made by the specification and the drawings of the present application, or directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of this application.

Industrial applicability

The embodiment of the invention provides a clock planning method and device, which does not require manual planning, reduces the probability of occurrence of errors, and reduces the operation difficulty of clock planning.

Claims (20)

A clock planning method, including: When the clock planning instruction is detected, the network to be planned is split into at least one clock link based on the clock planning instruction, and a clock injection node is set for the split clock link; Determining, according to the clock planning instruction, a planning manner of the clock link, where the planning mode is a ring mode or a shortest path mode; Determining a clock tracking direction of each node on the clock link according to the determined planning manner and a clock injection node of the clock link. The clock planning method according to claim 1, wherein when said clock link is a ring clock link and said ring clock link comprises a single clock injection node, said determining according to said determined manner and said The clock injection node of the clock link determines the clock tracking direction of each node on the clock link, including: Determining, in the ring mode, that the planned mode of the clock injection node is a node with a larger node identifier; Setting the clock injection node to the determined direction of the node as a clock tracking direction; Setting a connection port of any one of the ring clock link except the clock injection node and a previous node in the clock tracking direction as a high priority clock port, and the ring clock chain The connection port of any node other than the clock injection node on the road and the next node in the clock tracking direction is set as a low priority clock port. The clock planning method according to claim 1, wherein when said clock link is a ring clock link and said ring clock link comprises a master clock injection node and a standby clock injection node, said determining The planning mode and the clock injection node of the clock link, the step of determining the clock tracking direction of each node on the clock link includes: When the determined planning mode is the ring mode, determining whether the primary clock injection node is adjacent to the standby clock injection node, and if the primary clock injection node is adjacent to the standby clock injection node, Determining, by the clock injection node, the direction of the main clock injection node is a clock tracking direction, and if the main clock injection node is not adjacent to the standby clock injection node, determining a neighboring node of the main clock injection node The node in the middle identifies the larger node and injects the primary clock into the node The direction of the node is set to the clock tracking direction; Setting a connection port of the ring clock link except the main clock injection node to a node of the previous node in the clock tracking direction as a high priority clock port, and the ring clock A connection port of any node other than the standby clock injection node and the next node of the clock tracking direction is set as a low priority clock port. The clock planning method of claim 3, wherein when the number of the clock links is multiple, the setting a clock injection node for the split clock link comprises: When the clock link is a ring clock link, and the ring clock link and at least one other ring clock link communicate with each other to form a clock domain, each ring clock chain in the clock domain is sequentially extracted. The road acts as a ring clock link to be set; Determining, when the extracted ring clock link to be set includes the first clock injection node, whether the ring clock link that is not connected to the ring link to be set includes a second clock injection node, where The first clock injection node is a main clock injection node, the second clock injection node is a standby clock injection node, or the first clock injection node is a standby clock injection node, and the second clock injection node is injected into a main clock. node; Acquiring the ring clock link to be set and the adjacent and unset ring when the ring clock link that is connected to the ring clock link that is to be set and not set includes the second clock injection node a shared node between clock links; The shared node is virtualized as the second clock injection node of the ring clock link to be set, and the shared node is virtualized as the ring clock chain adjacent to the ring clock link to be set and not set. The first clock of the path is injected into the node, and the ring clock link to be set is updated to the set ring clock link. The clock planning method according to claim 4, after determining the clock tracking direction of the node on the clock link, the clock planning method further includes: When the standby clock injection node includes a plurality of actual nodes, setting any of the actual nodes included in the standby clock injection node to a connection port of the last actual node in the clock tracking direction as a high priority clock. a port, the slave clock is injected into any one of the actual nodes included in the node and the connection port of the next actual node included in the clock tracking direction of the standby clock injection node is set to Low priority clock port. The clock planning method according to claim 1, wherein when said clock link is a ring clock link and said ring clock link comprises a single clock injection node, said determining according to said determined manner and said The clock injection node of the clock link determines the clock tracking direction of each node on the clock link, including: When the determined planning mode is the shortest path mode, each node except the clock injection node is sequentially selected along the two sides of the clock injection node; When the node is selected, it is determined whether the currently selected node is the same node; When the currently selected node is a different node, the connection port of the selected node and the previous node in the direction is set as a high priority clock port, respectively, and the connection port of the selected node and the next node in the direction is set to a low priority clock port, and when the currently selected node is a neighboring node, the step of stopping the selected node is stopped; When the currently selected node is the same node, the two selected ports of the same node are set as the high priority clock port and the low priority clock port respectively, and the steps of stopping the selected node are stopped according to the preset priority rule. . The clock planning method according to claim 6, wherein the preset priority rule comprises: If the port types of the two ports are different, set the optical port to a high-priority clock port and the electrical port to a low-priority clock port. If the port types of the two ports are the same, set the port with the higher port rate as the high priority clock port and the other port to the lower priority clock port. If the port rates of the two ports are the same, set the port with the larger port number as the high priority clock port and the other port to the lower priority clock port. If the port numbers of the two ports are the same, set the port with the larger slot number as the high priority clock port and the other port to the lower priority clock port. The clock planning method according to claim 1, wherein when the clock link is an annular clock link including a plurality of clock injection nodes, the clocking according to the determined planning mode and the clock link a node, the step of determining a clock tracking direction of each node on the clock link includes: And obtaining, in the shortest path mode, the hop count of each of the first tracking nodes from each clock injection node, wherein the first tracking node is the ring clock link except The clock is injected into other nodes than the node; Obtaining a clock injection node corresponding to a minimum number of hops in the corresponding hop count of each of the first tracking nodes, and setting a reverse direction of each of the first tracking nodes to the acquired clock injection node as a clock tracking direction; Setting a connection port of each of the first tracking node and a previous node in the clock tracking direction as a high priority clock port, and placing each of the first tracking nodes under the clock tracking direction The connection port of a node is set to a low priority clock port. The clock planning method according to claim 1, wherein when the clock link is a chain clock link, the clock chain is determined according to a determined planning manner and a clock injection node of the clock link. The steps of the clock tracking direction of each node on the road include: When the determined planning mode is the shortest path mode, the clock is injected into the node as a starting point of the chain clock link, and the clock is injected into the node to the direction of other nodes in the chain clock link. The link direction of the chain clock link; Setting a connection port of each second tracking node and a previous node in the link direction as a clock port, wherein the second tracking node is the clock injection node except the clock injection node Other nodes outside. The clock planning method according to claim 9, wherein when said chain clock link includes two clock injection nodes, said each second tracking node is associated with a previous node in said link direction The steps for setting the connection port to the clock port include: Obtaining, by each second tracking node, a hop count from each of the clock injection nodes in each of the link directions; Obtaining a clock injection node corresponding to a minimum number of hops in each hop count of each second tracking node, and setting a reverse direction of each of the second tracking nodes to the acquired clock injection node as a clock tracking direction; Setting a connection port of each of the second tracking node and a previous node in the clock tracking direction as a high priority clock port, and each of the second tracking nodes is in the clock tracking direction The connection port of the next node is set to the low priority clock port. A clock planning device comprising: The splitting module is configured to: when detecting a clock planning instruction, split the network to be planned into at least one clock link based on the clock planning instruction, and set a clock injection node for the split clock link; a determining module, configured to: determine, according to the clock planning instruction, a planning manner of the clock link, where the planning mode is a ring mode or a shortest path mode; The planning module is configured to: determine a clock tracking direction of each node on the clock link according to the determined planning manner and a clock injection node of the clock link. The clock planning apparatus according to claim 11, wherein said planning module is configured to: when said clock link is a ring clock link and said ring clock link comprises a single clock injection node, and said Determining, in the ring mode, a node having a larger node identifier in a neighboring node of the clock injection node; setting a direction of the clock injection node to the determined node as a clock tracking direction; The connection port of any node other than the clock injection node and the previous node in the clock tracking direction is set as a high priority clock port on the ring clock link, and the ring clock link is A connection port of any node other than the clock injection node and a next node in the clock tracking direction is set as a low priority clock port. The clock planning apparatus according to claim 11, wherein said planning module is configured to: when said clock link is a ring clock link and said ring clock link comprises a main clock injection node and a backup clock injection And determining, by the node, that the planning mode is a ring mode, determining whether the primary clock injection node is adjacent to the standby clock injection node, and if the primary clock injection node is adjacent to the standby clock injection node, Setting a direction of the standby clock injection node to the main clock injection node as a clock tracking direction, and if the main clock injection node is not adjacent to the standby clock injection node, determining a phase of the main clock injection node a node in the neighboring node identifies a node that is larger, and sets a direction in which the master clock is injected into the node to the determined node as a clock tracking direction; and injects the master clock into the ring clock link The connection port of any node other than the node in the clock tracking direction is set as a high priority clock port, and the standby clock is injected into the ring clock link. Any node connected to the external clock with the next node in the tracking direction is set to low priority port clock port. The clock planning apparatus of claim 13 wherein said splitting module comprises: And an extracting unit, configured to: when the clock link is a ring clock link, and the ring clock link and at least one other ring clock link communicate with each other to form a clock domain, sequentially extracting the clock domain Each ring clock link acts as a ring clock link to be set; a determining unit, configured to: determine, when the extracted ring clock link to be set includes the first clock injection node, whether the ring clock link that is not connected to the ring link to be set includes a second clock Injecting a node, wherein the first clock injection node is a primary clock injection node, the second clock injection node is a standby clock injection node, or the first clock injection node is a standby clock injection node, and the second clock The injection node is injected into the node as a master clock; An acquiring unit, configured to: when the ring clock link that is connected to the to-be-set ring clock link and that is not set includes the second clock injection node, obtain the ring clock link to be set and the adjacent And a shared node between the ring clock links that are not set; a setting unit, configured to: virtualize the shared node as a second clock injection node of the ring clock link to be set, and virtualize the shared node as adjacent to the ring clock link to be set And setting a first clock injection node of the ring clock link, and updating the to-be-set ring clock link to a set ring clock link. The clock planning apparatus according to claim 14, wherein said planning module is further configured to: when said standby clock injection node comprises a plurality of actual nodes, and after determining a clock tracking direction of a node on the clock link And connecting the standby clock to any actual node included in the node and the connection port of the last actual node in the clock tracking direction as a high priority clock port, and injecting the standby clock into any actual node included in the node A connection port that is included with the standby clock injection node and that is the next actual node in the clock tracking direction is set as a low priority clock port. The clock planning apparatus according to claim 11, wherein said planning module is configured to: when said clock link is a ring clock link and said ring clock link comprises a single clock injection node, and said When the planning mode is the shortest path mode, each node except the clock injection node is sequentially selected along the two sides of the clock injection node; when the node is selected, it is determined whether the currently selected node is the same node; When the currently selected node is a different node, the connection port of the selected node and the previous node in the direction is set as a high priority clock port, respectively, and the connection port of the selected node and the next node in the direction is set to Low priority clock end Port, and when the currently selected node is a neighboring node, the selected node is stopped; and when the currently selected node is the same node, the selected two sides of the same node are respectively set to be based on the preset priority rule. High priority clock port and low priority clock port, and stop the selected node. The clock planning apparatus according to claim 16, wherein said preset priority rule comprises: If the port types of the two ports are different, set the optical port to a high-priority clock port and the electrical port to a low-priority clock port. If the port types of the two ports are the same, set the port with the higher port rate as the high priority clock port and the other port to the lower priority clock port. If the port rates of the two ports are the same, set the port with the larger port number as the high priority clock port and the other port to the lower priority clock port. If the port numbers of the two ports are the same, set the port with the larger slot number as the high priority clock port and the other port to the lower priority clock port. The clock planning apparatus according to claim 11, wherein the planning module is configured to: when the clock link is a ring clock link including a plurality of clock injection nodes, and the determined planning mode is the shortest In the path mode, obtain the hop count of each of the first tracking nodes from each clock injection node, where the first tracking node is a node other than the clock injection node in the ring clock link; Obtaining a clock injection node corresponding to a minimum number of hops in the corresponding hop count of each of the first tracking nodes, and setting a reverse direction of each of the first tracking nodes to the acquired clock injection node as a clock tracking direction; And setting a connection port of each of the first tracking node and a previous node in the clock tracking direction as a high priority clock port, and each of the first tracking nodes and the clock tracking direction The connection port of the next node is set to the low priority clock port. The clock planning apparatus according to claim 11, wherein the planning module is configured to: inject the clock when the clock link is a chain clock link and the determined planning mode is a shortest path mode; a node as a starting point of the chain clock link, and injecting the clock into a node to a direction of other nodes in the chain clock link as a link direction of the chain clock link; and The second tracking node is a clock port in the chain clock link except the clock injection node. Other nodes outside. The clock planning apparatus according to claim 19, wherein said planning module is configured to: when said chain clock link comprises two clock injection nodes, acquire each of said second tracking nodes in each of said chains a hop count of each of the clock injection nodes in the direction of the path; acquiring a clock injection node corresponding to a minimum hop count of the corresponding hop count of each second tracking node, and injecting each of the second tracking nodes to the acquired clock a reverse direction of the node is set to a clock tracking direction; and a connection port of each of the second tracking node and a previous node in the clock tracking direction is set as a high priority clock port, and each of the second The connection port of the tracking node and the next node in the clock tracking direction is set to a low priority clock port.

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