CN110784373B - Virtual network convergence method and device - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/46—Interconnection of networks
- H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/12—Shortest path evaluation
- H04L45/123—Evaluation of link metrics
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/14—Routing performance; Theoretical aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/74—Address processing for routing
- H04L45/745—Address table lookup; Address filtering
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Abstract
The invention discloses a virtual network convergence method and a device, wherein the method comprises the following steps: transmitting heartbeat packets among the nodes, writing the node attribute of the current node into the heartbeat packet, and sending a new heartbeat packet to the next node to form a single node path; a single node path is gathered to form a path table; setting a root node and a terminal node, and determining an optimal path between the root node and the terminal node from a path table; and acquiring the whole set of the optimal paths to finish convergence. The apparatus is for performing a method. According to the invention, the information of the node is written into the heartbeat packet, so that the node passed by the heartbeat packet can be recorded, and a data transmission path is formed. The communication relation between the nodes can be fully verified by setting the root node and the terminal node to determine all possible paths. The optimal data transmission path can be indicated through the optimal path, and subsequent data transmission, namely convergence of a virtual network, is facilitated.
Description
Technical Field
The present invention relates to the field of virtual network technologies, and in particular, to a virtual network convergence method and apparatus.
Background
Network communication is a relatively complex problem, when two indirectly connected computers need to communicate, the two indirectly connected computers need to pass through different routers, and the routers determine communication paths of the computers through routing protocols. Routing protocols are generally divided into static routing and dynamic routing. Static routing relies on manual programming to configure the selected path to the routing device, and the static routing is suitable for a simple network environment; the dynamic routing relies on the router to automatically collect network information and establish a routing table, thereby realizing routing. Both of the above two ways are passive routing, and the communication path is determined by passively collecting network information, and it is usually difficult to meet the requirement of data transmission performance in a communication network requiring fast real-time data transmission.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a virtual network convergence method which can realize the convergence of the virtual network.
The invention also provides a virtual network convergence device.
In a first aspect, a virtual network convergence method of the present invention includes: transmitting heartbeat packets among the nodes, writing the node attribute of the current node into the heartbeat packet, and sending a new heartbeat packet to the next node to form a single node path; a single node path is gathered to form a path table; setting a root node and a terminal node, and determining an optimal path between the root node and the terminal node from a path table; and acquiring the whole set of the optimal paths to finish convergence.
The virtual network convergence method of the embodiment of the invention at least has the following beneficial effects: the nodes passed by the heartbeat packet can be described through the attribute information of the transmission nodes of the heartbeat packet among the nodes to form a path table, all possible paths are determined through setting a root node and a terminal node, and the optimal path set is selected to finish the convergence of the virtual network.
According to the virtual network convergence method of some embodiments of the present invention, after the heartbeat packet is transmitted between nodes, the method further includes: the heartbeat packet contains the node attribute of the current node, and the heartbeat packet is discarded to obtain other heartbeat packets. By discarding the heartbeat packets containing the node attributes of the current node, the circulation of redundant heartbeat packets can be reduced, and the utilization rate of the virtual network is improved.
According to some embodiments of the present invention, the virtual network convergence method further includes, after the transmission of the heartbeat packet between the nodes: and the node attribute of the current node is not contained in the heartbeat packet, and the node attribute of the current node is written into the heartbeat packet.
According to a virtual network convergence method of some embodiments of the present invention, setting a root node and a terminating node includes: setting one node as a root node and setting other nodes as terminal nodes; correspondingly, all the nodes are respectively set as root nodes, and a corresponding optimal path set is obtained to complete convergence. By setting a node root node and a terminal node, a single node path is obtained, the transmission between nodes can be determined from a single node to a single node, and the applicability pertinence of the method is improved.
According to the virtual network convergence method of some embodiments of the present invention, the heartbeat packet specifically includes node attributes and cost information for describing transmission time between nodes, where the node attributes include an ingress port and an egress port of a current node and a MAC of a node that has been experienced; correspondingly, setting the path corresponding to the minimum cost information as the optimal path.
According to the virtual network convergence method of some embodiments of the present invention, a virtual network is implemented based on an Open vSwitch. Existing hardware can be integrated through Open vSwitch to realize a virtual network, and utilization rate of existing equipment is improved.
The virtual network convergence method according to some embodiments of the present invention further includes: and storing and updating the link state of the node port, wherein the link state is used for correcting the optimal path. It can be determined for subsequent data transmission whether the node can be normally utilized as a basis for modifying the optimal path.
According to the virtual network convergence method of some embodiments of the present invention, storing and updating the link state of the node port includes: a storage unit is arranged to store the link states of the current node and other nodes; the detection unit is arranged to detect the link state of the port of the current node, and the link state of the port of the current node is broadcasted to other nodes through a data packet to update the corresponding link state. The corresponding storage unit and the detection unit are arranged for each node, so that all nodes can be completely monitored, and the monitoring capability of the whole virtual network can be improved.
According to the virtual network convergence method of some embodiments of the present invention, when the received data packet is a received data packet, the received data packet is discarded, otherwise, the storage unit updates the link status of other nodes according to the content of the data packet. By discarding the received data packets, the transmission pressure of the virtual network can be reduced.
In a second aspect, an embodiment of the present invention provides a virtual network convergence apparatus, including: the transmission module is used for transmitting the heartbeat packets among the nodes, writing the node attribute of the current node into the heartbeat packet, and sending the new heartbeat packet to the next node to form a single node path; the aggregation module is used for aggregating a single node path to form a path table; the selection module is used for setting a root node and a terminal node and determining an optimal path between the root node and the terminal node from the path table; and the convergence module is used for acquiring all sets of the optimal paths to finish convergence.
The virtual network convergence device of the embodiment of the invention at least has the following beneficial effects: the nodes passed by the heartbeat packet can be described through the attribute information of the transmission nodes of the heartbeat packet among the nodes to form a path table, all possible paths are determined through setting a root node and a terminal node, and the optimal path set is selected to finish the convergence of the virtual network.
Drawings
Fig. 1 is a flowchart illustrating a virtual network convergence method according to an embodiment of the present invention;
FIG. 2 is a flow chart illustrating an exemplary heartbeat packet delivery process according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating an embodiment of a link status detection process according to the present invention;
fig. 4 is a block diagram of an embodiment of a virtual network convergence apparatus according to the present invention.
Detailed Description
The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.
In the description of the present invention, if an orientation description is referred to, for example, the orientations or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the orientations or positional relationships shown in the drawings, only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. If a feature is referred to as being "disposed," "secured," "connected," or "mounted" to another feature, it can be directly disposed, secured, or connected to the other feature or indirectly disposed, secured, connected, or mounted to the other feature.
In the description of the embodiments of the present invention, if "a number" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "greater than", "lower" or "inner" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.
Example 1.
Referring to fig. 1, a flowchart of a virtual network convergence method in an embodiment of the present invention is shown. The method specifically comprises the following steps:
s1, transmitting heartbeat packets among the nodes, writing the node attribute of the current node into the heartbeat packet, and sending the new heartbeat packet to the next node to form a single node path;
s2, collecting a single node path to form a path table;
s3, setting a root node and a terminal node, and determining an optimal path between the root node and the terminal node from the path table;
and S4, acquiring the whole set of the optimal paths to finish convergence.
The information of the node is written into the heartbeat packet, and the node passed by the heartbeat packet can be recorded to form a data transmission path. The communication relation between the nodes can be fully verified by setting the root node and the terminal node to determine all possible paths. The optimal data transmission path can be indicated through the optimal path, and subsequent data transmission, namely convergence of a virtual network, is facilitated.
According to some embodiments of the virtual network convergence method in the present invention, step S1 may specifically include:
and transmitting heartbeat packets among the nodes, wherein the heartbeat packets comprise the node attribute of the current node, discarding the heartbeat packets, and acquiring other heartbeat packets.
By discarding the heartbeat packets containing the node attributes of the current node, the redundant heartbeat packet flow can be reduced, and the utilization rate of the network is improved.
According to some embodiments of the virtual network convergence method in the present invention, step S1 may specifically include:
and transmitting a heartbeat packet between the nodes, wherein the heartbeat packet does not contain the node attribute of the current node, and writing the node attribute of the current node into the heartbeat packet.
The heartbeat packet specifically comprises node attributes and cost information used for describing transmission time among nodes, wherein the node attributes comprise an ingress port and an egress port of a current node and an MAC of a node which has already been experienced; correspondingly, setting the path corresponding to the minimum cost information as the optimal path. The cost information can be obtained through actual measurement.
According to a virtual network convergence method of some embodiments of the present invention, setting a root node and a terminating node includes: setting one node as a root node and setting other nodes as terminal nodes; correspondingly, all the nodes are respectively set as root nodes, and a corresponding optimal path set is obtained to complete convergence. By setting a node root node and a terminal node, a single node path is obtained, the transmission between nodes can be determined from a single node to a single node, and the applicability pertinence of the method is improved.
According to the virtual network convergence method of some embodiments of the present invention, a virtual network is implemented based on Open vSwitch (an Open virtual switching standard). Existing hardware can be integrated through Open vSwitch to realize a virtual network, and utilization rate of existing equipment is improved.
The virtual network convergence method according to some embodiments of the present invention further comprises the steps of:
and storing and updating the link state of the node port, wherein the link state is used for correcting the optimal path. It can be determined for subsequent data transmission whether the node can be normally utilized as a basis for modifying the optimal path.
According to the virtual network convergence method of some embodiments of the present invention, storing and updating the link state of the node port includes: a storage unit is arranged to store the link states of the current node and other nodes; the detection unit is arranged to detect the link state of the port of the current node, and the link state of the port of the current node is broadcasted to other nodes through a data packet to update the corresponding link state. And a corresponding storage unit and a corresponding detection unit are arranged for each node, so that all nodes can be completely monitored, and the monitoring capability of the whole virtual network can be improved.
A corresponding link state management module (i.e. a detection unit) is set for each node, port link state detection of the node (i.e. the current node) is periodically performed, and after the change of the port link state is detected, the node advertises (broadcasts) the port link state to the whole network to the protocol forwarding table management modules (i.e. a storage unit) of other nodes. Because the forwarding path of the virtual network changes when the port link state of each node changes (e.g., from up to down or down to up).
Detecting the link state of each node:
firstly, detecting the recording state of a port link; then, the timing task or the preset thread detects ovs (that is, the link status of the port formed by the Open vSwitch), and after finding that the link status of the port changes, it needs to notify the change information of the link status of the port (through a data packet, that is, a subsequent failure notification packet) to the link status management module of another node for processing. When the node receives the change information, whether the data packet is accepted or not is judged according to the packet sequence and the source mac, if the data packet is accepted, the data packet is simply discarded, and if the data packet is not accepted, the data packet is forwarded, and meanwhile, the data packet is forwarded to an additionally arranged protocol forwarding unit for recording the link state of the whole virtual network.
According to the virtual network convergence method in some embodiments of the present invention, when the received data packet is a received data packet, the received data packet is discarded, otherwise, the storage unit updates the link status of other nodes according to the content of the data packet. By discarding the received data packets, the transmission pressure of the virtual network can be reduced.
Referring to fig. 2, a heartbeat packet delivery process is provided, including:
a heartbeat initiating message (i.e., S21, sending out a heartbeat packet);
after receiving the heartbeat packet, the node extracts the data part of the heartbeat packet (i.e. S22, and the node receives and extracts the data of the data packet); the data part of the heartbeat packet is mainly a list containing mac (Media Access Control, Media Access Control address), an ingress port, an egress port, cost and the like; the mac is a source (root node) of sending the heartbeat packet or a mac of the forwarding node, the ingress port is an ingress port of the forwarding node of the heartbeat packet, which indicates from which port the heartbeat packet enters the forwarding node, the egress port is an egress port of the forwarding node for forwarding the heartbeat packet, and the cost is time required for reaching the next node from the egress port of the forwarding node.
When the forwarding node receives the heartbeat packet, it first determines whether the mac of the node is present in the data part list of the heartbeat packet (i.e., step S23), if the mac is present in the list, it indicates that the node has forwarded the heartbeat packet, in order to prevent the heartbeat packet from looping back, the node directly discards the heartbeat packet (i.e., step S231), if the mac of the node is not present in the list, it indicates that the node has not forwarded the heartbeat packet, the forwarding node adds the attribute information of the node (including the mac, the ingress port, the egress port, the cost, and the like) to the data part list (i.e., step S232), and then sends the heartbeat packet through the designated egress port (i.e., step S24, a single node path is formed). The heartbeat packet specifically comprises node attributes and cost information used for describing transmission time among nodes, wherein the node attributes comprise an input port and an output port of a current node and an MAC of a node which has been experienced; correspondingly, setting the path corresponding to the minimum cost information as the optimal path.
Referring to fig. 3, a link state detection flow is provided, including:
s31, determining the state of the storage unit; i.e., determining that a link state record exists.
S32, detecting the link state of the port and reporting to the detection unit;
s33, the detecting unit judges whether the received link state is consistent with the link state stored before, if so, the detecting unit repeatedly detects the link state of the port according to a preset rule; if not, executing S34;
s34, updating the link state record and outputting the failure notification packet (i.e. the data packet, in particular for notifying the port of the failure or the port failure being repaired)
S35, other nodes receive the fault notification packet;
s36, analyzing whether the failure notification packet is forwarded, if yes, discarding (S361), if not, forwarding the failure notification packet, and waiting for the failure notification packet again (S362);
and S37, updating the record of the link state of the whole virtual network.
Example 2.
Referring to fig. 4, there is provided a virtual network convergence apparatus including: the transmission module 1 is used for transmitting heartbeat packets among the nodes, writing the node attribute of the current node into the heartbeat packet, and sending a new heartbeat packet to the next node to form a single node path; the aggregation module 2 is used for aggregating a single node path to form a path table; the selection module 3 is used for setting a root node and a terminal node and determining an optimal path between the root node and the terminal node from the path table; and the convergence module 4 is used for acquiring all sets of the optimal paths to finish convergence.
The virtual network convergence device of the embodiment of the invention at least has the following beneficial effects: the nodes passed by the heartbeat packet can be described through the attribute information of the transmission nodes of the heartbeat packet among the nodes to form a path table, all possible paths are determined through setting a root node and a terminal node, and the optimal path set is selected to finish the convergence of the virtual network.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (6)
1. A virtual network convergence method, comprising:
transmitting heartbeat packets among nodes, writing node attributes of a current node into the heartbeat packets, and sending a new heartbeat packet to a next node to form a single node path;
collecting the single node path to form a path table;
setting a root node and a terminal node, and determining an optimal path between the root node and the terminal node from the path table;
acquiring a whole set of the optimal paths to finish convergence;
the setting of the root node and the terminating node includes:
setting a node as a root node, and then setting a terminating node to determine all paths; in a corresponding manner, the first and second optical fibers are,
respectively setting all the nodes as root nodes, and acquiring a set of corresponding optimal paths to finish convergence;
the heartbeat packet specifically comprises node attributes and time information used for describing time spent on transmission among nodes, wherein the node attributes comprise an input port and an output port of a current node and an experienced MAC of the node;
correspondingly, the path corresponding to the minimum value of the time information required by the transmission between the nodes is set as the optimal path.
2. The virtual network convergence method of claim 1, wherein the transmitting the heartbeat packet between the nodes further comprises:
and if the heartbeat packet contains the node attribute of the current node, discarding the heartbeat packet and continuously acquiring other heartbeat packets.
3. The virtual network convergence method of claim 1, wherein the transmitting the heartbeat packet between the nodes further comprises:
and if the node attribute of the current node is not contained in the heartbeat packet, writing the node attribute of the current node into the heartbeat packet.
4. The virtual network convergence method according to claim 1, wherein each node is provided with a storage unit and a detection unit, the virtual network convergence method further comprising:
storing and updating the link state of the node port;
the storing and updating the link state of the node port comprises:
setting the storage unit to store the link states of the current node and other nodes;
and setting the detection unit to detect the link state of the port of the current node, broadcasting the link state of the port of the current node to other nodes through a data packet to update the corresponding link state, wherein the link state is used for correcting the optimal path.
5. The virtual network convergence method of claim 4, wherein when the received data packet is a received data packet, the heartbeat packet is not processed, otherwise the storage unit updates the link status of other nodes according to the content of the data packet.
6. A virtual network convergence apparatus, comprising:
the transmission module is used for transmitting the heartbeat packets among the nodes, writing the node attribute of the current node into the heartbeat packet, and sending the new heartbeat packet to the next node to form a single node path;
the aggregation module is used for aggregating the single node path to form a path table;
a selecting module, configured to set a root node and a terminating node, and determine an optimal path between the root node and the terminating node from the path table, where the step of setting the root node and the terminating node includes:
setting a node as a root node, and then setting a terminating node to determine all paths; in a corresponding manner, the first and second optical fibers are,
respectively setting all the nodes as root nodes, and acquiring a set of corresponding optimal paths to finish convergence;
the heartbeat packet specifically comprises node attributes and time information used for describing time spent on transmission among nodes, wherein the node attributes comprise an input port and an output port of a current node and an experienced MAC of the node;
correspondingly, setting a path corresponding to the minimum value of the time information required to be spent in transmission between the nodes as an optimal path;
and the convergence module is used for acquiring all sets of the optimal paths to finish convergence.
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| CN111311851A (en) * | 2020-03-10 | 2020-06-19 | 北京意锐新创科技有限公司 | Heartbeat sending method and device suitable for payment equipment |
| CN111355639A (en) * | 2020-03-10 | 2020-06-30 | 北京意锐新创科技有限公司 | Heartbeat packet forwarding method and device suitable for payment equipment |
| CN111355640A (en) * | 2020-03-10 | 2020-06-30 | 北京意锐新创科技有限公司 | Distributed dynamic heartbeat packet forwarding method and device suitable for payment equipment |
| CN111698163A (en) * | 2020-05-29 | 2020-09-22 | 深圳市永达电子信息股份有限公司 | OVS-based full-switching network communication method, device and medium |
| CN114500359B (en) * | 2022-04-15 | 2022-07-12 | 深圳市永达电子信息股份有限公司 | Cluster dynamic networking method and cluster dynamic system |
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