CN106464511B - A service protection method and device - Google Patents

Abstract

The embodiment of the invention provides a method for protecting service, which comprises the following steps: the controller establishes a first LSP and a second LSP of the ASON service; the controller sends the configuration information of the first LSP to a first network element, sends the configuration information of the second LSP to a second network element, triggers the first network element to create the first LSP, and triggers the second network element to create the second LSP; the controller receives fault information of a first LSP sent by a first network element, wherein the fault information carries the service ID, and the controller searches a second LSP according to the service ID; the controller calculates a rerouting path of the first LSP, which is separated from the second LSP, according to the path information of the second LSP, and issues configuration information of the rerouting path of the first LSP to the first network element. The embodiment of the invention also provides a device for protecting the service. The embodiment of the invention has the advantages of improving the service survivability and enhancing the user experience of the service.

Description

A service protection method and device

technical field

The present invention relates to the technical field of communications, in particular to a service protection method and device.

Background technique

With the development of transmission networks, network survivability has become an important content that needs to be paid attention to in the current network design, operation and maintenance operations. Efficient and flexible protection and restoration methods have become a network (including Automatically Switched Important features that ASON)) must have.

ASON refers to a new generation network that completes the automatic switching function under the control of routing and signaling. It is a standardized intelligent optical transmission network. The ASON network adopts the traditional protection mode. When a fault occurs, the protection switching is completed from the transmission plane without involving the control plane. The recovery in the ASON network adopts the rerouting method. When the label switched path (Labe-SwitchedPath, LSP) is interrupted, the head node calculates an optimal path for service recovery, and then establishes a new LSP through signaling. LSPs are used to transmit services. Service association refers to associating two services. When one of the LSPs is rerouted or optimized, it should be separated from the other LSP as far as possible, and will not completely overlap with the associated LSP. As shown in Figure 1, in the actual user network, for important services, users use remote disaster recovery backup and ASON dynamic recovery capabilities to ensure service reliability. For the scenario in Figure 1, for an ASON network, the working path (such as LSP1 in Figure 1) and the protection path (such as LSP2 in Figure 1) of the same service have different head nodes and end nodes. When the fiber between intelligent network elements A and C in the working path LSP1 is broken, LSP1 will perform rerouting to generate a service path LSP1', thereby avoiding the protection path LSP2.

However, in the existing distributed ASON technology, the network management manages the ASON services on the two paths of LSP1 and LSP2 separately, so that when the associated services LSP1 and LSP2 fail, the protocol communication between network elements cannot obtain the service path of the other party in time. information, resulting in the inability to share service path information between associated services, resulting in reduced service survivability; associated services LSP1 and LSP2 are created separately, making the creation of associated service paths unable to achieve overall optimization.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a service protection method and device, which can support service path state sharing through a controller, improve service survivability, reduce service rerouting operation complexity, and enhance service user experience.

In the first aspect, an embodiment of the present invention provides a service protection method, which may include:

The controller establishes a first label switching path LSP and a second LSP of an ASON service in an automatic switching optical network, the first LSP is a working path, and the second LSP is a protection path;

The controller sends the configuration information of the first LSP to the first network element, sends the configuration information of the second LSP to the second network element, and triggers the first network element to create the first network element. LSP, triggering the second network element to create the second LSP; the configuration information of the first LSP and the configuration information of the second LSP carry the service identification ID of the ASON service;

The controller receives the fault information of the first LSP sent by the first network element, where the fault information of the first LSP carries the service ID, and the controller searches for the first LSP according to the service ID. Two LSPs;

The controller calculates the rerouting path of the first LSP separated from the second LSP according to the path information of the second LSP, and sends configuration information of the rerouting path of the first LSP to the The first network element is configured to trigger the first network element to create a rerouting path of the first LSP.

In combination with the implementation of the first aspect, in a first possible implementation of the first aspect, the controller establishes a first label switching path LSP and a second LSP of an ASON service in an automatic switching optical network, specifically including:

The controller receives user configuration information sent by the network management, the user configuration information includes at least one source node and at least one sink node, and the source node and the sink node are used to create the same source node and the same sink node, the same ASON services of at least one service type among source nodes and different sink nodes, different source nodes and the same sink node, and different source nodes and different sink nodes;

The controller calculates a first LSP and a second LSP separated from each other for the ASON service according to the source node and the sink node included in the user configuration information.

With reference to the first aspect, or the first possible implementation of the first aspect, in the second possible implementation of the first aspect, after the controller searches for the second LSP according to the service ID, the method Also includes:

The controller judges whether the found second LSP is in a normal working state;

If the second LSP is in a normal working state, send a service alarm of service degradation to the network management.

With reference to the first aspect, or any of the first to second possible implementation manners of the first aspect, in a third possible implementation manner of the first aspect, the controller searches for the second After the LSP, the method also includes:

The controller judges whether the found second LSP is in a normal working state;

If the found second LSP is in a failure state, send a service interruption service alarm to the network manager.

With reference to the first aspect, or any of the first to third possible implementation manners of the first aspect, in a fourth possible implementation manner of the first aspect, the controller triggers the first network element to create the The first LSP, after triggering the second network element to create the second LSP, the method further includes:

The controller receives the service optimization request sent by the network manager;

The controller calculates the optimized first LSP and the optimized second LSP of the ASON service according to the path information of the first LSP and the second LSP, and delivers the configuration information of the optimized first LSP To the first network element, send the configuration information of the optimized second LSP to the second network element, to trigger the first network element to establish the optimized first LSP, to trigger the second network element to network establishing the optimized second LSP;

Wherein, the configuration information of the optimized first LSP and the configuration information of the optimized second LSP carry the service ID of the ASON service.

In the second aspect, an embodiment of the present invention provides a device for service protection, which may include:

Create a module for establishing a first label switching path LSP and a second LSP of an ASON service in an automatic switching optical network, the first LSP is a working path, and the second LSP is a protection path;

A sending module, configured to send the configuration information of the first LSP established by the creation module to the first network element, and send the configuration information of the second LSP established by the creation module to the second network element element, triggering the first network element to create the first LSP, and triggering the second network element to create the second LSP; the configuration information of the first LSP and the configuration information of the second LSP carry the Service identification ID of ASON service;

A search module, configured to receive the fault information of the first LSP sent by the first network element, where the fault information of the first LSP carries the service ID, and search for the second LSP according to the service ID;

A calculation module, configured to calculate a rerouting path of the first LSP separated from the second LSP according to the path information of the second LSP searched by the search module;

The sending module is further configured to send the configuration information of the rerouting path of the first LSP calculated by the calculation module to the first network element, so as to trigger the first network element to create the first network element. A rerouting path of an LSP.

In combination with the implementation of the second aspect, in the first possible implementation of the second aspect, the creation module is specifically used for:

Receive user configuration information sent by the network management, the user configuration information includes at least one source node and at least one sink node, the source node and the sink node are used to create the same source node and the same sink node, the same source node and different An ASON service of at least one service type among sink nodes, different source nodes and the same sink node, and different source nodes and different sink nodes;

According to the source node and the sink node contained in the user configuration information, calculate the first LSP and the second LSP which are separated from each other for the ASON service.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in the second possible implementation manner of the second aspect, the device further includes:

An alarm module, configured to judge whether the second LSP found by the search module is in a normal working state, and if the second LSP is in a normal working state, send a service degraded service alarm to the network management.

In combination with the second aspect, or any of the first to second possible implementation manners of the second aspect, in a third possible implementation manner of the second aspect, the device further includes:

An alarm module, configured to judge whether the second LSP found by the search module is in a normal working state, and if the second LSP is in a fault state, send a service interruption service alarm to the network manager.

In combination with the second aspect, or any of the first to third possible implementation manners of the second aspect, in a fourth possible implementation manner of the second aspect, the device further includes:

An optimization module, configured to receive a service optimization request sent by the network manager, and calculate an optimized first LSP and an optimized second LSP for the ASON service according to the path information of the first LSP and the second LSP;

The sending module is further configured to send the configuration information of the optimized first LSP calculated by the optimization module to the first network element, and send the configuration information of the optimized second LSP to the second network element. element, to trigger the first network element to establish the optimized first LSP, to trigger the second network element to establish the optimized second LSP;

Wherein, the configuration information of the optimized first LSP and the configuration information of the optimized second LSP carry the service ID of the ASON service.

In a third aspect, an embodiment of the present invention provides a controller, which may include:

a memory, a receiver, a transmitter, and a processor, the receiver and the transmitter, and the processor are respectively connected to the memory, and the processor is respectively connected to the receiver and the transmitter;

A set of program codes are stored in the memory;

The receiver, the transmitter and the processor are used to call the program code stored in the memory, and perform the following operations:

The processor is configured to establish a first label switching path LSP and a second LSP of an ASON service, the first LSP is a working path, and the second LSP is a protection path;

The sender is configured to send the configuration information of the first LSP established by the processor to the first network element, send the configuration information of the second LSP to the second network element, and trigger the The first network element creates the first LSP, and triggers the second network element to create the second LSP; the configuration information of the first LSP and the configuration information of the second LSP carry the service identifier of the ASON service ID;

The receiver is configured to receive the fault information of the first LSP sent by the first network element, where the fault information of the first LSP carries the service ID;

The processor is further configured to search for the second LSP according to the service ID received by the receiver, and calculate the path of the first LSP separated from the second LSP according to the path information of the second LSP. rerouting path;

The sender is further configured to send the configuration information of the rerouting path of the first LSP to the first network element, so as to trigger the first network element to create the rerouting path of the first LSP.

With reference to the implementation of the third aspect, in a first possible implementation of the third aspect, the receiver is further configured to receive user configuration information sent by the network manager, where the user configuration information includes at least one source node and at least one A sink node, the source node and the sink node are used to create at least one of the same source node and the same sink node, the same source node and different sink nodes, different source nodes and the same sink node, and different source nodes and different sink nodes One type of ASON service;

The processor is specifically configured to: calculate the mutually separated first LSP and second LSP of the ASON service according to the source node and the sink node contained in the user configuration information.

In combination with the third aspect, or the first possible implementation of the third aspect, in the second possible implementation of the third aspect, wherein:

The processor is further configured to determine whether the found second LSP is in a normal working state;

The sender is further configured to send a service warning of service degradation to the network management system when the processor determines that the second LSP is in a normal working state.

In combination with the third aspect, or any of the first to second possible implementation manners of the third aspect, in the third possible implementation manner of the third aspect, wherein:

The processor is further configured to determine whether the found second LSP is in a normal working state;

The sender is further configured to send a service interruption service alarm to the network manager when the processor determines that the second LSP is in a fault state.

With reference to the third aspect, or any of the first to third possible implementation manners of the third aspect, in a fourth possible implementation manner of the third aspect, the receiver is further configured to receive the business optimization request;

The processor is further configured to calculate an optimized first LSP and an optimized second LSP for the ASON service according to the path information of the first LSP and the second LSP;

The sender is further configured to send the configuration information of the optimized first LSP calculated by the processor to the first network element, and send the configuration information of the optimized second LSP calculated by the processor to the first network element. sending the configuration information to the second network element, to trigger the first network element to establish the optimized first LSP, to trigger the second network element to establish the optimized second LSP;

Wherein, the configuration information of the optimized first LSP and the configuration information of the optimized second LSP carry the service ID of the ASON service.

In the embodiment of the present invention, the controller can create an ASON service, and generate two LSPs of the ASON service, including the working path and the protection path of the ASON service, and then send the configuration information of the two LSPs to the two network elements, and trigger the network The element creates an LSP on the network element. The controller can also carry the service ID in the configuration information of the two LSPs and send it to the network element. When the working path LSP on the first network element fails, the first network element will carry the service ID in the fault information and report it to the network element. A controller, the controller can search for the protection path corresponding to the faulty LSP according to the service ID, and can realize the sharing of state information of the service path of the LSP. Furthermore, the controller can calculate a rerouting path separate from the protection path, and rerouting the faulty LSP, so as to improve service survivability and enhance service user experience.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

FIG. 1 is a schematic diagram of an application scenario in a prior art solution;

FIG. 2 is a schematic diagram of an implementation process of service creation in the prior art solution;

Fig. 3 is a schematic flowchart of the first embodiment of the service protection method provided by the embodiment of the present invention;

FIG. 4 is a schematic diagram of a scene in a service protection method provided by an embodiment of the present invention;

Fig. 5 is a schematic diagram of interaction in the service protection method provided by the embodiment of the present invention;

Fig. 6 is a schematic flowchart of the second embodiment of the service protection method provided by the embodiment of the present invention;

Fig. 7 is another schematic diagram of interaction in the service protection method provided by the embodiment of the present invention;

Fig. 8 is a schematic flowchart of the third embodiment of the service protection method provided by the embodiment of the present invention;

Fig. 9 is a schematic structural diagram of the first embodiment of the device for service protection provided by the embodiment of the present invention;

Fig. 10 is a schematic structural diagram of the second embodiment of the device for service protection provided by the embodiment of the present invention;

Fig. 11 is a schematic structural diagram of an embodiment of a controller provided by an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In specific implementation, the ASON network described in the embodiment of the present invention is a standardized intelligent optical transport network, which is widely considered as the mainstream technology of the next generation optical network. LSP is a transmission channel formed by a series of jump stations in the transmission of information packets through the label switching mechanism. A label switching path can be flexibly selected according to the conventional routing mechanism or configuration.

With the development of transport networks, network survivability has become an important aspect that needs to be paid attention to in current network design, operation, and maintenance operations. Efficient and flexible protection and recovery methods have become important features that ASON networks must have. Protection usually utilizes the pre-allocated capacity between network elements, such as simple 1+1 protection within the board, and complex ones such as ODUK ring network protection (ODUK Spring) protection. Network restoration typically utilizes whatever capacity is available between network elements. For example, when a high-priority service is restored, any capacity available between network elements can be used, including the capacity originally allocated to low-priority services. When the service route fails, the network automatically finds an alternative route for the failed route, and its restoration algorithm is the same as the network route selection algorithm. When using the recovery mode, the network must reserve some idle resources in advance for service rerouting.

ASON network can still adopt traditional protection methods, such as ODUK Spring. Restoration in the ASON network adopts the rerouting method. When the LSP is interrupted, the head node calculates an optimal path for service recovery, and then establishes a new LSP through signaling, and the new LSP transmits the service. In actual user networks, for important services, users use remote disaster recovery backup and ASON dynamic recovery capabilities to ensure service reliability, as shown in Figure 1. For the scenario described in Figure 1, for the ASON network, the working path (corresponding to LSP1 in Figure 1) and the protection path (corresponding to LSP2 in Figure 1) of the same service have different head nodes and end nodes respectively. Distributed ASON technology manages these two paths as one ASON service respectively, and provides the association capability of these two services to simulate as one service. The implementation process of service creation in the prior art will be described below with reference to FIG. 2 .

Referring to FIG. 2 , it is a schematic diagram of an implementation flow chart of service creation in the prior art solution. The business creation process of the prior art solution includes steps:

1. The user configures the primary LSP (LSP1).

The user can set the configuration information of the primary LSP (that is, LSP1) for creating an associated protection service in the network management system, so as to trigger network element 1 to create LSP1 through the network management system. Wherein, the aforementioned LSP1 is the working path of the ASON service.

2. The NMS creates LSP1.

The network management can obtain the configuration information of the LSP1 configured by the user, and then trigger the network element 1 to create the LSP1 on the network element.

3. The user configures LSP2.

The user can also set the configuration information of the protection path (also called the backup working path) LSP2 corresponding to the working path for creating the associated protection service in the network management, so as to trigger the network element 2 to create LSP2 through the network management. Wherein, the aforementioned LSP2 is the protection path corresponding to the working path LSP1.

4. The NMS creates LSP2.

The network manager can obtain the configuration information of the LSP2 configured by the user, and then trigger the network element 2 to create the LSP2 on the network element.

5. The user sets the main and backup related services.

Users can set LSP1 and LSP2 as associated services, and users can set the association relationship between LSP1 and LSP2. Wherein, the above-mentioned association relationship between LSP1 and LSP2 is the association information of LSP1 and LSP2 visible to the user end, and the network element 1 and the network element 2 need to obtain the path information of each other through the communication protocol.

6. The network management triggers network element 1 to set the association between LSP1 and LSP2.

7. The network management triggers network element 2 to set the association between LSP1 and LSP2.

The network management triggers network element 1 and network element 2 to set the association between LSP1 and LSP2, and set the service of LSP1 and the service of LSP2 as associated services. Network element 1 and network element 2 can obtain the path information of each other through the communication protocol. However, even if NE 1 and NE 2 have set the association relationship between LSP1 and LSP2, when NE 1 and NE 2 create services, they still calculate paths separately, so that NE 1 and NE 2 calculate the path separately. Business paths may not be optimal business paths, and business paths are poorly created.

8. Network element 1 and network element 2 have service failures at the same time.

When the LSP1 corresponding to NE 1 fails, NE 1 can determine that its service is faulty, and then report the service fault to the network management; when the LSP2 corresponding to NE 2 fails, NE 2 can determine that its service processing is faulty, Then, service faults can be reported to the network management system.

9. The service fault of network element 1 is displayed.

10. The service fault of network element 2 is displayed.

After receiving the service faults reported by the network element 1 and the network element 2, the network manager can display the service faults of the network element 1 and the network element 2 and present them to the user. Users can determine the service status according to the service failure displayed by the network management system, and then determine the on-off status of each service according to the association relationship between the main and backup related services set by the user, and then specify a single service for rerouting and other operations.

11. Network element 1 performs service rerouting.

12. The network element 2 performs service rerouting.

In the specific implementation, if the above-mentioned LSP1 has a service failure and needs to be rerouted, network element 1 can calculate the rerouting path of LSP1 according to the path information of the service path (LSP2) created by network element 2 obtained when the network management sets the association between LSP1 and LSP2 . If a service failure occurs on NE 1 and service rerouting is required, LSP2 on NE 2 has a service failure at the same time. For example, LSP1 and LSP2 have overlapping parts, and the overlapping part fails, and LSP2 and LSP1 perform rerouting at the same time. Since the service path rerouting priority of the network element is higher than the priority of notifying the other network element of the service path information, the network element gives priority to the service path rerouting, and then notifies the service path information to the other network element, so that the network element can obtain The service path information of the other party is not timely, and the latest status of the service path of the other party cannot be considered in time when the network element reroutes the service path. When NE 1 and NE 2 calculate the rerouting path, because the path information of the other party is not obtained in time, NE 1 and NE 2 may calculate the same path, which makes the rerouting path calculation of LSP1 and LSP2 incorrect. Accurate or unable to achieve the optimum of two service paths at the same time, the effect of rerouting is not good, and the service survivability is reduced.

Aiming at the problem that the existing technical solution cannot manage two service paths as one service in operations such as service creation, and cannot realize the timely sharing of service path information, the embodiment of the present invention provides a service protection method, which can implement service paths through the controller. The association management of the controller realizes the calculation of the service path through the controller, which can support the state sharing of the service path, improve the service survivability, and reduce the complexity of operations such as service rerouting.

In the embodiment of the present invention, an ASON service can be created on the controller. Specifically, in the embodiment of the present invention, the ASON service created by the controller can be an ASON diamond service. The following will take the ASON diamond service as an example to describe the service protection method provided by the embodiment of the present invention in detail. The controller can generate two service paths of ASON services, transmit ASON service information through the above two service paths of ASON services, and trigger network elements to create service paths on network elements by operating the service paths and service IDs created on the controller , or reroute or optimize the service path. When a service failure occurs on a network element, the network element can send an alarm request or a rerouting request to the controller for management, thereby realizing state sharing of service paths. The embodiment of the present invention can create a new diamond-level service. Multiple source nodes and multiple sink nodes can be set for the service. On the same node, the working path and the protection path can use the same board port and channel, or use different Board ports and channels. That is, the diamond-level service created by the method described in the embodiment of the present invention may include multiple types of diamond-level services, such as the same type of business at the same end, that is, the same source node (also called the first node) and the same The sink node (also called the end node), or the service type with the same head and different ends, that is, the same source node and different sink nodes, or the service type with different heads and the same end, that is, different source nodes and the same sink node nodes, or service types with different heads and different ends, that is, different source nodes and different sink nodes.

The method and device for service protection provided by the embodiments of the present invention will be specifically described below with reference to FIG. 1 to FIG. 11 .

Referring to FIG. 3 , it is a schematic flowchart of the first embodiment of the service protection method provided by the embodiment of the present invention. The service protection method described in the embodiment of the present invention includes steps:

S101. The controller creates a first label switched path LSP and a second LSP of an ASON service, the first LSP is a working path, and the second LSP is a protection path.

In specific implementation, when creating a service, the controller may first create an ASON diamond-level service according to user configuration. Wherein, the above-mentioned ASON diamond-level service can specifically be an enhanced ASON diamond-level service, and the controller can implement association management of services on different LSPs through the service ID of the above-mentioned ASON diamond-level service, and realize status information sharing of associated services. After the controller creates the ASON diamond service, it can generate two LSPs for the above-mentioned ASON service, including the first LSP and the second LSP. The first LSP is the working path, and the second LSP is the protection path. LSP is used to transmit ASON service information.

Further, when the controller creates the enhanced ASON diamond service, it can receive the user configuration sent by the network management, wherein the above user configuration can include multiple source nodes and multiple sink nodes, that is, at least one source node and at least one sink node. Wherein, the source nodes configured by the user may be the same source node or different source nodes, and the sink nodes configured by the user may be the same sink node or different sink nodes. The services generated by the controller according to the source node and the sink node may include: same first and same end, or same first and different ends, or different first and same ends, or different first and different ends, etc. service types. That is, the ASON diamond service created by the controller based on the above source node and the above sink node may include two service paths of the same source node (also called the head node) and the same sink node (also called the end node), or the same Two service paths from a source node and different sink nodes, or two service paths from different source nodes and the same sink node, or two service paths from different source nodes and different sink nodes.

In specific implementation, the controller can generate enhanced ASON diamond-level services according to the user configuration sent by the above-mentioned network management, and also needs to calculate the service paths of two mutually separated LSPs according to the current network environment. In the specific implementation, as shown in Figure 4, cost10 and cost100 described in the figure are link costs. When the controller calculates the path, the link cost can be accumulated, and the path with the smallest accumulated number on the path is selected as the target path. Wherein, the above cost10 and cost100 are just an example of the link cost, and specific values may be determined according to actual scenarios, and are not limited here. In the specific implementation, when the controller calculates the two service paths of the ASON service, it can first determine the two service paths according to the principle that the working path and the protection path are separated from each other (that is, the protection path and the working path do not overlap), and in combination with the link cost on the service path. The service path, and then calculate the link cost to finally obtain two service paths. Specifically, if the controller only considers one path when calculating the service path, the path calculated by the controller for the first time may be A-B-C-D (the number on the path is cost10+cost10+cost10), at this time, the controller calculates the path for the second time Whether the path is A-B-D (the number on the path is cost10+cost100) or A-C-D (the number on the path is cost10+cost100), there will be a link overlap with the first path, that is, the path calculated for the first time and the path calculated for the second time The paths will not be separable. Therefore, in order to calculate two separate service paths, the controller needs to consider the two paths at the same time according to the network environment (such as the status of each intelligent network element), determine the path lines of the two paths at a time, and finally determine the path lines of the two paths according to the path line The link cost calculates the optimal service path of the two LSPs.

S102. The controller sends the configuration information of the first LSP to the first network element, sends the configuration information of the second LSP to the second network element, and triggers the first network element to create the The first LSP triggers the second network element to create the second LSP.

In some feasible implementation manners, after the controller generates enhanced ASON diamond service (hereinafter referred to as ASON service) according to the user configuration and generates two LSPs of the ASON service, the configuration information of the above two LSPs is sent to the two NE, which triggers the NE to create an LSP on the NE. Further, in the embodiment of the present invention, the configuration information of the above two LSPs carries the service ID of the above ASON service. The controller may carry the above service ID in the configuration information of the LSP and send it to the network element, triggering the network element to create an LSP on the network element. Specifically, the controller may send the configuration information (including the service ID of the ASON service) of the first LSP (for example, the working path) among the two LSPs generated by it to the first network element, triggering the first network element to create the first LSP on the NE. Further, the controller can also issue the configuration information (including the service ID of the ASON service) of the other LSP (that is, the second LSP, such as the protection path corresponding to the above-mentioned working path) among the two LSPs generated by it to the second LSP. The second network element triggers the second network element to create an LSP on the second network element. After the first network element receives the configuration information of the first LSP, it can create the first LSP on the network element according to the configuration information and service ID; after the second network element receives the configuration information of the second LSP, it can Create the second LSP on the network element according to the above configuration information and service ID.

In some feasible implementation manners, the controller sends the configuration information of the first LSP to the first network element, triggers the first network element to create the first LSP, and sends the configuration information of the second LSP to the second network element, After the second network element is triggered to create the second LSP, the service ID carried in the configuration information of the first LSP and the service ID carried in the configuration information of the second LSP can also be used to associate the first LSP with the second LSP, and then the The first LSP and the second LSP perform association management. For example, the second LSP is searched for using the service ID carried in the fault information sent by the first network element corresponding to the first LSP.

Further, in the embodiment of the present invention, on the controller, the LSP is identified using controller node ID+service ID. On the network element, the source node ID + sink node ID + service ID are used to identify the LSP. The network element records the service ID of the enhanced ASON diamond service issued by the controller as the service attribute of the ASON service, and then can transmit the service In the process of communicating information or transmitting service failure information to the controller, the above service ID is also transmitted to the controller, so that the controller can search for corresponding service path information. The controller can search for all LSPs under the service associated with the above service ID, so as to realize the sharing of service path information.

S103. The controller receives the fault information of the first LSP sent by the first network element, where the fault information of the first LSP carries the service ID, and the controller searches for the service ID according to the service ID. Describe the second LSP.

In some feasible implementation manners, when an LSP (for example, the first LSP) on the network element fails, the network element may report the fault status of the LSP to the controller, wherein the network element feeds back the fault status of the LSP to the controller , the service ID issued by the controller can be carried in the above LSP fault information, and the above service ID can be fed back to the controller. The controller can determine the fault state of the LSP on the network element according to the LSP fault information fed back by the network element, and can also determine the service path state of the LSP associated with the first LSP according to the service ID, and then can determine the state of the LSP associated with the first LSP according to the The service path state determines the rerouting path of the first LSP. The network element can perform operations such as rerouting of the service path through the rerouting path instruction issued by the controller.

In a specific implementation, the above-mentioned first LSP may specifically be a working path of the ASON service, and the above-mentioned second LSP associated with the first LSP may specifically be a protection path corresponding to the above-mentioned working path of the ASON service. That is, in the embodiment of the present invention, the controller searches for all LSPs associated with the above-mentioned service ID in combination with the service ID of the enhanced ASON diamond service generated by the controller, and the controller can search for all service LSPs associated with the service ID, and then can view all LSPs associated with the service ID. The state of the service LSP can realize the state sharing of all service LSPs. Furthermore, it is also possible to determine whether the service is interrupted according to the state of all service LSPs, or perform operations such as rerouting on the working path LSP according to the state of the protection path LSP, which can enhance the survivability of the service.

S104. According to the path information of the second LSP, the controller calculates the rerouting path of the first LSP separated from the second LSP, and delivers the configuration information of the rerouting path of the first LSP to The first network element is configured to trigger the first network element to create a rerouting path of the first LSP.

In some feasible implementation manners, after the controller finds the second LSP, it may calculate the rerouting path of the first LSP separated from the second LSP according to the path information of the above LSP. That is, the controller may try to avoid the service path of the second LSP, and determine the service path for rerouting by the first LSP. After the controller calculates the service path separated from the second LSP, it can send the above service path to the first network element, triggering the first network element to create a rerouting path of the first LSP, so as to ensure the normal operation of the service.

Further, the interaction process between the controller, the network manager, and the network element in the specific implementation process of the above service creation and rerouting will be described below with reference to FIG. 5 .

Referring to Figure 5, it is a schematic diagram of the interaction process of service creation and rerouting in the service protection method provided by the embodiment of the present invention, including steps:

1. The user triggers the network management to create a protected service.

In the specific implementation process, the user can input multiple source nodes and multiple sink nodes to trigger the network management to establish a protected service.

2. The network management triggers the controller to create a protected service.

During the specific implementation process, the network manager can send the user configurations of multiple source nodes and sink nodes input by the user to the controller, and trigger the controller to create a protected service. The controller can calculate two optimal LSP service paths according to the current network environment, and then deliver them to the network elements, triggering the network elements to create LSPs on the network elements.

3. The controller triggers network element 1 to create an LSP on the network element.

Specifically, the controller can send the configuration information of the first LSP (specifically, the working path of the ASON service) among the two LSPs of the ASON service generated by it to the network element 1, and trigger the network element 1 to create a LSP (for example, LSP1). Wherein, the configuration information of the above-mentioned first LSP carries the service ID of the ASON service.

4. The controller triggers the network element 2 to create an LSP on the network element.

Specifically, the controller can send the configuration information of the second LSP (specifically, the protection path corresponding to the working path of the ASON service) of the two LSPs generated by it to the network element 2, and trigger the network element 2 to create LSP on network element 2 (for example, LSP2). Wherein, the configuration information of the above-mentioned second LSP carries the service ID of the ASON service.

5. The service LSP on network element 1 fails.

In specific implementation, when the LSP1 fails, the network element 1 can detect that the LSP1 fails, and then can report service failure information to the controller.

6. Network element 1 requests the controller to perform rerouting on the service LSP1.

In the specific implementation, when network element 1 detects that LSP1 fails, network element 1 can send service failure information to the controller, and can also send LSP1 to the controller for rerouting requests, so as to create new services according to the instructions of the controller path. Specifically, when network element 1 reports service failure information to the controller, it can simultaneously feed back the service ID in the configuration information of the first LSP issued by the controller to the controller, and the controller searches for the service associated with LSP1 according to the above service ID path.

7. The controller calculates the path of LSP1 according to the path condition of LSP2.

In the specific implementation, after the controller receives the rerouting request of LSP1 sent by network element 1, it can find the service path (LSP2) associated with LSP1 according to the service ID carried in the service fault information sent by network element 1, and then can The service path separated from LSP2 is calculated according to the path status of LSP2, and the service path obtained by the above calculation is used as the rerouting path of LSP1.

8. The controller sends the rerouting path of the service LSP1 to the network element 1.

In a specific implementation, the controller may send the calculated service path separated from LSP2 as the configuration information of the rerouting service path of LSP1 to network element 1, and trigger network element 1 to create a rerouting path of LSP1.

In the embodiment of the present invention, the controller can create an enhanced ASON diamond-level service, and generate two LSPs of the ASON diamond-level service, and then send the configuration information of the two LSPs to two network elements, and trigger the network element Create an LSP on the network element, where the configuration information of the two LSPs carries the service ID. When an LSP on any network element fails, the controller can search for the LSP associated with the above-mentioned faulty LSP according to the fault information reported by the network element of the faulty LSP and the service ID of the ASON service carried in the above-mentioned fault information. Realize the sharing of state information of the service path of the LSP. Further, service paths separated from the LSPs associated with the faulty LSP can be calculated, and the service path of the faulty LSP can be rerouted to improve service survivability and user experience of the service.

Referring to FIG. 6 , it is a schematic flowchart of the second embodiment of the service protection method provided by the embodiment of the present invention. The method described in the embodiment of the present invention comprises steps:

S201. The controller establishes a first LSP and a second LSP of an ASON service, the first LSP is a working path, and the second LSP is a protection path.

S202. The controller sends the configuration information of the first LSP to the first network element, sends the configuration information of the second LSP to the second network element, and triggers the first network element to create the The first LSP triggers the second network element to create the second LSP.

S203. The controller receives the fault information of the first LSP sent by the first network element, where the fault information of the first LSP carries the service ID, and the controller searches for the service ID according to the service ID. Describe the second LSP.

In specific implementation, for the specific implementation process of the above steps S201 to S203, reference may be made to the implementation manner described in the steps S101 to S103 in the above first embodiment, which will not be repeated here.

S204. When the controller receives the service optimization request sent by the network manager, the controller calculates the optimized first LSP for the ASON service according to the path information of the first LSP and the second LSP and optimize the second LSP, and deliver the configuration information of the optimized first LSP to the first network element, and deliver the configuration information of the optimized second LSP to the second network element, so as to trigger the first The network element establishes the optimized first LSP to trigger the second network element to establish the optimized second LSP.

In some feasible implementation manners, the controller sends the ASON service to the network element, and after the network element is triggered to create the LSP on the network element, the user can also optimize the LSP created on the network element. That is, after the controller triggers the network element to create an LSP on the network element, if the user feels that the service path created by the above network element cannot meet the requirements, for example, the sum of the link costs of the service path created by the network element is large, and the service path needs to be optimized , the controller may be triggered to optimize the service path of the ASON service. In a specific implementation, the user may send a service optimization request to the controller through the network management system. After receiving the service optimization request sent by the network management system, the controller can calculate the optimized paths of LSP1 and LSP2 according to the path information of LSP1 and LSP2 created by the network elements and send them to the corresponding network elements, triggering the network elements to create optimized LSP1 and LSP2 paths. LSP2. The network element can create an optimized service path according to the path issued by the controller. Wherein, the above service information of LSP1 and LSP2 may include information such as the sum of link costs of the service paths of LSP1 and LSP2, or the path nodes passed by the service paths of LSP1 and LSP2. The controller can calculate the path whose link cost is less than the sum of the link costs of the current LSP1 service path according to the link cost between each path node in the service path of LSP1, and use the calculated path as the optimized path of LSP1, that is, The first LSP is optimized, and then the first network element may be triggered to create the optimized first LSP. The controller can calculate the path whose link cost is less than the sum of the link costs of the current LSP2 service path according to the link cost between each path node in the service path of LSP2, and use the calculated path as the optimized path of LSP2, that is, The second LSP is optimized, and then the second network element may be triggered to create an optimized second LSP.

The implementation process of service optimization will be described below with reference to FIG. 7 .

Referring to FIG. 7, it is a schematic diagram of interaction of service optimization in the service protection method provided by the embodiment of the present invention, including steps:

1. The user triggers the network management to optimize services with protection.

2. The network management triggers the controller to optimize the protected services.

3. The controller calculates the optimized service paths of LSP1 and LSP2.

In specific implementation, when the controller receives the service optimization request sent by the network management, the controller can calculate the optimized service paths of LSP1 (ie, the first LSP) and LSP2 (ie, the second LSP) of the ASON service, and calculate the obtained The configuration information of the optimized service path is delivered to the corresponding network element, so as to trigger the network element to establish the optimized service path.

4. The controller triggers network element 1 to optimize LSP1.

5. The controller triggers network element 2 to optimize LSP2.

In a specific implementation, the controller may send the configuration information of the calculated optimized service path to the corresponding network element, and trigger the network element to establish the optimized service path according to the optimized service path calculated by the controller.

It should be noted that, in the embodiment of the present invention, the configuration information of the optimized first LSP and the configuration information of the optimized second LSP carry the service ID of the ASON service. When the first optimized LSP fails, the controller can search and optimize the second LSP according to the service ID carried in the fault information sent by the first network element, and then calculate the path separated from the optimized second LSP as the optimized first LSP A rerouting path is performed on the optimized first LSP.

In the embodiment of the present invention, the controller can create an enhanced ASON diamond service, and generate two LSPs of the ASON diamond service, and then send the configuration information of the two LSPs and the service ID of the ASON service to the two NE, which triggers the NE to create an LSP on the NE. In the embodiment of the present invention, the controller can also calculate and optimize the LSP, send the configuration information of the optimized LSP to the network element, trigger the network element to create the optimized LSP, realize the optimization of the service path, reduce the operation complexity of the service optimization, and enhance the service user experience.

Referring to FIG. 8 , it is a schematic flowchart of the third embodiment of the service protection method provided by the embodiment of the present invention. The method described in the embodiment of the present invention comprises steps:

S301. The controller establishes a first label switched path LSP and a second LSP of an ASON service, the first LSP is a working path, and the second LSP is a protection path.

S302. The controller sends the configuration information of the first LSP to the first network element, sends the configuration information of the second LSP to the second network element, and triggers the first network element to create the The first LSP triggers the second network element to create the second LSP, and the configuration information of the first LSP and the configuration information of the second LSP carry the service identification ID of the ASON service.

S303. The controller receives the fault information of the first LSP sent by the first network element, where the fault information of the first LSP carries the service ID, and the controller searches for the service ID according to the service ID. Describe the second LSP.

In specific implementation, for the implementation described in the above steps S301 to S303, reference may be made to the implementation described in the steps S101 to S103 in the first embodiment above, and details are not repeated here.

S304, the controller judges whether the found second LSP is in a normal working state, if yes, execute step S405, otherwise execute step S406.

In some feasible implementation manners, after the controller finds the second LSP associated with the first LSP according to the service ID of the enhanced ASON diamond service, it can determine whether the path of the second LSP is in the normal working status, and then the overall status of the service can be determined according to the working status of the second LSP, and corresponding alarm information can be triggered.

S305. Send a service alarm of service degradation to the network management system.

In specific implementation, when the controller judges that the path of the second LSP associated with the first LSP is in a normal working state, it can be determined that the current service is only the service interruption of the first LSP, and at this time the controller can trigger an alarm to the network management . Specifically, the controller may send a service alarm of service degradation to the network management system. Wherein, the above-mentioned service degradation may mean that the working path of the service (that is, the first LSP) is interrupted, and only the protection path (that is, the second LSP) is in a normal working state, so the service survivability level is reduced.

The controller can send a service alarm of service degradation to the network management, and the network management can determine whether to repair the service fault according to the service fault state, or determine the priority of repairing the service fault according to the service fault state. For example, when the first LSP is interrupted and the second LSP is in a normal working state, the network manager can set the repair level of the service failure to the second level, and the repair process can be performed in time or delayed. When both the first LSP and the second LSP are in a fault state, the network manager may set the repair level of the service fault as the first level, and it needs to be repaired in time. That is, the repairing priority of the service failure of the first level is higher than that of the service failure of the second level. The setting of the above-mentioned repair level is only an example, not exhaustive, including but not limited to the above-mentioned setting method, which is not limited here.

S306. Send a service interruption service alarm to the network manager.

In a specific implementation, when the controller determines that the path of the second LSP associated with the first LSP is in a fault state, it can be determined that the services of the first LSP and the second LSP under the current service are both in a fault state, and at this time the controller An alarm can be triggered to the network management system. Specifically, the controller can send a service interruption service alarm to the network management system, so as to realize the service path status alarm. The network manager repairs the service path in time according to the service interruption alarm sent by the controller, that is, reroutes the first LSP and the second LSP in time, and restores the normal working state of the service path.

In the embodiment of the present invention, the controller can create an enhanced ASON diamond service, and generate two LSPs of the ASON diamond service, and then send the configuration information of the two LSPs and the service ID of the ASON service to the two NE, which triggers the NE to create an LSP on the NE. When a single or partial service failure occurs in the current service, the controller can report a service degradation alarm to the network management. When all services under the current service are in a fault state, the controller can report a service interruption alarm to the network management. In the embodiment of the present invention, the controller can also trigger the service alarm to the network management, which reduces the operation complexity of the service alarm and enhances the user experience of the service.

Referring to FIG. 9 , it is a schematic structural diagram of the first embodiment of the device for service protection provided by the embodiment of the present invention. The device described in the embodiment of the present invention includes:

The creation module 10 is used to establish a first label switching path LSP and a second LSP of ASON services, the first LSP is a working path, and the second LSP is a protection path.

The sending module 20 is configured to send the configuration information of the first LSP established by the creation module to the first network element, and send the configuration information of the second LSP established by the creation module to the second network element. A network element triggers the first network element to create the first LSP, and triggers the second network element to create the second LSP; the configuration information of the first LSP and the configuration information of the second LSP carry the Service ID of the above-mentioned ASON service.

A search module 30, configured to receive the fault information of the first LSP sent by the first network element, where the fault information of the first LSP carries the service ID, and search for the second LSP according to the service ID .

The calculation module 40 is configured to calculate the rerouting path of the first LSP separated from the second LSP according to the path information of the second LSP searched by the search module.

The delivery module 20 is further configured to deliver the configuration information of the rerouting path of the first LSP calculated by the calculation module to the first network element, so as to trigger the first network element to create the Rerouting path of the first LSP.

In specific implementation, the device described in the embodiment of the present invention may specifically be the execution subject of the service protection method provided in the embodiment of the present invention, that is, the controller described in the embodiment of the present invention. During the specific implementation process, the above service protection The device can execute the specific implementation manner of the service protection method provided by the above-mentioned embodiments of the present invention through its creation module, delivery module, search module and calculation module. For the specific implementation process of each module in the device described in the embodiment of the present invention, reference may be made to the implementation described in the first embodiment of the service protection method above, which will not be repeated here.

In the embodiment of the present invention, the controller can create an enhanced ASON diamond-level service, and generate two LSPs of the ASON diamond-level service, and then send the configuration information of the two LSPs to two network elements, and trigger the network element Create an LSP on the network element, where the configuration information of the two LSPs carries the service ID. When an LSP on any network element fails, the controller can search for the LSP associated with the above-mentioned faulty LSP according to the fault information reported by the network element of the faulty LSP and the service ID of the ASON service carried in the above-mentioned fault information. Realize the sharing of state information of the service path of the LSP. Further, service paths separated from the LSPs associated with the faulty LSP can be calculated, and the service path of the faulty LSP can be rerouted to improve service survivability and user experience of the service.

Referring to FIG. 11 , it is a schematic structural diagram of the second embodiment of the device for service protection provided by the embodiment of the present invention. The device described in the embodiment of the present invention includes:

The creating module 11 is used to set up a first label switching path LSP and a second LSP of an ASON service, the first LSP is a working path, and the second LSP is a protection path.

In a specific implementation, the creation module 11 described in the embodiment of the present invention can execute the implementation performed by the creation module 10 described in the above embodiment, and can also perform the following operations:

The creation module 11 is specifically used for:

Receive user configuration information sent by the network management, the user configuration information includes at least one source node and at least one sink node, the source node and the sink node are used to create the same source node and the same sink node, the same source node and different An ASON service of at least one service type among sink nodes, different source nodes and the same sink node, and different source nodes and different sink nodes;

According to the source node and the sink node contained in the user configuration information, calculate the first LSP and the second LSP which are separated from each other for the ASON service.

The sending module 21 is configured to send the configuration information of the first LSP established by the creation module to the first network element, and send the configuration information of the second LSP established by the creation module to the second network element. A network element triggers the first network element to create the first LSP, and triggers the second network element to create the second LSP; the configuration information of the first LSP and the configuration information of the second LSP carry the Service ID of the above-mentioned ASON service.

A search module 30, configured to receive the fault information of the first LSP sent by the first network element, where the fault information of the first LSP carries the service ID, and search for the second LSP according to the service ID .

The calculation module 40 is configured to calculate the rerouting path of the first LSP separated from the second LSP according to the path information of the second LSP searched by the search module.

The delivery module 21 is further configured to deliver the configuration information of the rerouting path of the first LSP calculated by the calculation module to the first network element, so as to trigger the first network element to create the Rerouting path of the first LSP.

In some feasible implementation manners, the device described in the embodiment of the present invention further includes:

The alarm module 50 is configured to judge whether the second LSP found by the search module is in a normal working state, and if the second LSP is in a normal working state, then send a service degraded service warning to the network management.

In some feasible implementation manners, the device described in the embodiment of the present invention further includes:

The alarm module 50 is used to judge whether the second LSP found by the search module is in a normal working state, and if the second LSP is in a fault state, send a service interruption alarm to the network manager.

In some feasible implementation manners, the device described in the embodiment of the present invention further includes:

The optimization module 60 is configured to receive a service optimization request sent by the network manager, and calculate an optimized first LSP and an optimized second LSP for the ASON service according to the path information of the first LSP and the second LSP.

The delivery module 21 is further configured to deliver the configuration information of the optimized first LSP calculated by the optimization module to the first network element, and deliver the configuration information of the optimized second LSP to the second network element. element, to trigger the first network element to establish the optimized first LSP, to trigger the second network element to establish the optimized second LSP;

Wherein, the configuration information of the optimized first LSP and the configuration information of the optimized second LSP carry the service ID of the ASON service.

In specific implementation, the device described in the embodiment of the present invention may specifically be the execution subject of the service protection method provided in the embodiment of the present invention, that is, the controller described in the embodiment of the present invention. In the specific implementation process, the implementation of the present invention The device described in the example can implement the specific implementation of the service protection method provided by the above-mentioned embodiments of the present invention through its creation module, delivery module, search module, calculation module, alarm module and optimization module. For the specific implementation process of each module in the device described in the embodiment of the present invention, please refer to the implementation described in the first embodiment of the service protection method provided by the above-mentioned embodiment of the present invention, and the service provided by the above-mentioned embodiment of the present invention The implementation manners described in the second embodiment and the third embodiment of the protection method will not be repeated here.

In the embodiment of the present invention, the controller can create an enhanced ASON diamond service, and generate two LSPs of the ASON diamond service, and then send the configuration information of the two LSPs and the service ID of the ASON service to the two NE, which triggers the NE to create an LSP on the NE. When a single or partial service failure occurs in the current service, the controller can report a service degradation alarm to the network management. When all services under the current service are in a fault state, the controller can report a service interruption alarm to the network management. In the embodiment of the present invention, the controller can also trigger the service alarm to the network management, which reduces the operation complexity of the service alarm and enhances the user experience of the service.

Referring to FIG. 12 , it is a schematic structural diagram of an embodiment of a controller provided by an embodiment of the present invention. The controller described in the embodiment of the present invention includes: a memory 1000, a receiver 2000, a transmitter 3000, and a processor 4000, and the receiver 2000, the transmitter 3000, the processor 4000 communicate with the memory 1000 bus 5000 connection;

A set of program codes are stored in the memory 1000;

The receiver 2000, the transmitter 3000 and the processor 4000 are used to call the program code stored in the memory, and perform the following operations:

The processor 4000 is configured to establish a first label switching path LSP and a second LSP of ASON services, the first LSP is a working path, and the second LSP is a protection path.

The sender 3000 is configured to send the configuration information of the first LSP established by the processor to the first network element, send the configuration information of the second LSP to the second network element, and trigger the The first network element creates the first LSP, and triggers the second network element to create the second LSP; the configuration information of the first LSP and the configuration information of the second LSP carry the service of the ASON service Identification ID.

The receiver 2000 is configured to receive the fault information of the first LSP sent by the first network element, where the fault information of the first LSP carries the service ID.

The processor 4000 is further configured to search for the second LSP according to the service ID received by the receiver, and calculate a first LSP separated from the second LSP according to the path information of the second LSP rerouting path.

The transmitter 3000 is further configured to send configuration information of the rerouting path of the first LSP to the first network element, so as to trigger the first network element to create the rerouting path of the first LSP .

In some possible implementations,

The receiver 2000 is further configured to receive user configuration information sent by the network management, the user configuration information includes at least one source node and at least one sink node, the source node and the sink node are used to create the same source node and ASON services of at least one service type among the same sink node, the same source node and different sink nodes, different source nodes and the same sink node, and different source nodes and different sink nodes;

The processor 4000 is specifically configured to: calculate the mutually separated first LSP and second LSP of the ASON service according to the source node and the sink node included in the user configuration information.

In some possible implementations,

The above-mentioned processor 4000 is further configured to judge whether the found second LSP is in a normal working state;

The transmitter 3000 is further configured to, when the processor determines that the second LSP is in a normal working state, send a service alarm of service degradation to the network management.

In some possible implementations,

The above-mentioned processor 4000 is further configured to judge whether the found second LSP is in a normal working state;

The above-mentioned transmitter 3000 is further configured to send a service interruption service alarm to the network manager when the processor determines that the second LSP is in a fault state.

In some feasible implementation manners, the receiver 2000 is further configured to receive a service optimization request sent by the network manager;

The processor 4000 is further configured to calculate an optimized first LSP and an optimized second LSP for the ASON service according to the path information of the first LSP and the second LSP;

The sender 3000 is further configured to send the configuration information of the optimized first LSP calculated by the processor to the first network element, and send the optimized second LSP calculated by the processor sending the configuration information to the second network element, to trigger the first network element to establish the optimized first LSP, to trigger the second network element to establish the optimized second LSP;

Wherein, the configuration information of the optimized first LSP and the configuration information of the optimized second LSP carry the service ID of the ASON service.

In specific implementation, the controller described in the embodiment of the present invention may specifically be the execution subject of the service protection method provided in the embodiment of the present invention, that is, the controller described in the embodiment of the present invention. During the specific implementation process, the controller The specific implementation manner of the service protection method provided by the above-mentioned embodiments of the present invention can be implemented by the receiver, the transmitter, and the processor. For the specific implementation process of each module in the controller described in the embodiment of the present invention, please refer to the implementation described in the first embodiment of the service protection method provided by the above-mentioned embodiment of the present invention, and the implementation method provided in the above-mentioned embodiment of the present invention The implementation manners described in the second embodiment and the third embodiment of the service protection method will not be repeated here.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in computer-readable storage media. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM) and the like.

The above disclosures are only preferred embodiments of the present invention, and certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (15)

1. A method for service protection, characterized in that the method comprises: The controller establishes a first label switching path LSP and a second LSP of an ASON service in an automatic switching optical network, the first LSP is a working path, and the second LSP is a protection path; The controller sends the configuration information of the first LSP to the first network element, sends the configuration information of the second LSP to the second network element, and triggers the first network element to create the first network element. LSP, triggering the second network element to create the second LSP; the configuration information of the first LSP and the configuration information of the second LSP carry the service identification ID of the ASON service; The controller receives the fault information of the first LSP sent by the first network element, where the fault information of the first LSP carries the service ID, and the controller searches for the first LSP according to the service ID. Two LSPs; The controller calculates the rerouting path of the first LSP separated from the second LSP according to the path information of the second LSP, and sends configuration information of the rerouting path of the first LSP to the The first network element is configured to trigger the first network element to create a rerouting path of the first LSP. 2. The method according to claim 1, wherein the controller sets up the first label switching path LSP and the second LSP of the Automatic Switching Optical Network ASON service, specifically comprising: The controller receives user configuration information sent by the network management, the user configuration information includes at least one source node and at least one sink node, and the source node and the sink node are used to create the same source node and the same sink node, the same ASON services of at least one service type among source nodes and different sink nodes, different source nodes and the same sink node, and different source nodes and different sink nodes; The controller calculates a first LSP and a second LSP separated from each other for the ASON service according to the source node and the sink node included in the user configuration information. 3. The method according to claim 1, wherein after the controller searches for the second LSP according to the service ID, the method further comprises: The controller judges whether the found second LSP is in a normal working state; If the second LSP is in a normal working state, send a service alarm of service degradation to the network management. 4. The method according to claim 1, wherein after the controller searches for the second LSP according to the service ID, the method further comprises: The controller judges whether the found second LSP is in a normal working state; If the found second LSP is in a failure state, send a service interruption service alarm to the network manager. 5. The method according to claim 2, wherein the controller triggers the first network element to create the first LSP, and after triggering the second network element to create the second LSP, the Methods also include: The controller receives the service optimization request sent by the network manager; The controller calculates the optimized first LSP and the optimized second LSP of the ASON service according to the path information of the first LSP and the second LSP, and delivers the configuration information of the optimized first LSP To the first network element, send the configuration information of the optimized second LSP to the second network element, to trigger the first network element to establish the optimized first LSP, to trigger the second network element to network establishing the optimized second LSP; Wherein, the configuration information of the optimized first LSP and the configuration information of the optimized second LSP carry the service ID of the ASON service. 6. A service protection device, characterized in that it comprises: Create a module for establishing a first label switching path LSP and a second LSP of an ASON service in an automatic switching optical network, the first LSP is a working path, and the second LSP is a protection path; A sending module, configured to send the configuration information of the first LSP established by the creation module to the first network element, and send the configuration information of the second LSP established by the creation module to the second network element element, triggering the first network element to create the first LSP, and triggering the second network element to create the second LSP; the configuration information of the first LSP and the configuration information of the second LSP carry the Service identification ID of ASON service; A search module, configured to receive the fault information of the first LSP sent by the first network element, where the fault information of the first LSP carries the service ID, and search for the second LSP according to the service ID; A calculation module, configured to calculate a rerouting path of the first LSP separated from the second LSP according to the path information of the second LSP searched by the search module; The sending module is further configured to send the configuration information of the rerouting path of the first LSP calculated by the calculation module to the first network element, so as to trigger the first network element to create the first network element. A rerouting path of an LSP. 7. The device according to claim 6, wherein the creation module is specifically used for: Receive user configuration information sent by the network management, the user configuration information includes at least one source node and at least one sink node, the source node and the sink node are used to create the same source node and the same sink node, the same source node and different An ASON service of at least one service type among sink nodes, different source nodes and the same sink node, and different source nodes and different sink nodes; According to the source node and the sink node contained in the user configuration information, calculate the first LSP and the second LSP which are separated from each other for the ASON service. 8. The device of claim 6, further comprising: An alarm module, configured to judge whether the second LSP found by the search module is in a normal working state, and if the second LSP is in a normal working state, send a service degraded service alarm to the network management. 9. The device of claim 6, further comprising: The alarm module is used to judge whether the second LSP found by the search module is in a normal working state, and if the second LSP is in a fault state, send a service interruption alarm to the network management. 10. The device of claim 7, further comprising: An optimization module, configured to receive a service optimization request sent by the network manager, and calculate an optimized first LSP and an optimized second LSP for the ASON service according to the path information of the first LSP and the second LSP; The sending module is further configured to send the configuration information of the optimized first LSP calculated by the optimization module to the first network element, and send the configuration information of the optimized second LSP to the second network element. element, to trigger the first network element to establish the optimized first LSP, to trigger the second network element to establish the optimized second LSP; Wherein, the configuration information of the optimized first LSP and the configuration information of the optimized second LSP carry the service ID of the ASON service. 11. A kind of controller, is characterized in that, comprises: memory, receiver, transmitter and processor, described receiver and described transmitter, described processor are respectively connected with described memory, and described processor is respectively connected to said receiver and said transmitter; A set of program codes are stored in the memory; The receiver, the transmitter and the processor are used to call the program code stored in the memory, and perform the following operations: The processor is configured to establish a first label switching path LSP and a second LSP of an ASON service, the first LSP is a working path, and the second LSP is a protection path; The sender is configured to send the configuration information of the first LSP established by the processor to the first network element, send the configuration information of the second LSP to the second network element, and trigger the The first network element creates the first LSP, and triggers the second network element to create the second LSP; the configuration information of the first LSP and the configuration information of the second LSP carry the service identifier of the ASON service ID; The receiver is configured to receive the fault information of the first LSP sent by the first network element, where the fault information of the first LSP carries the service ID; The processor is further configured to search for the second LSP according to the service ID received by the receiver, and calculate the path of the first LSP separated from the second LSP according to the path information of the second LSP. rerouting path; The sender is further configured to send the configuration information of the rerouting path of the first LSP to the first network element, so as to trigger the first network element to create the rerouting path of the first LSP. 12. The controller of claim 11 wherein, The receiver is further configured to receive user configuration information sent by the network management, the user configuration information includes at least one source node and at least one sink node, and the source node and the sink node are used to create the same source node and the same ASON service of at least one service type among the sink node, the same source node and different sink nodes, different source nodes and the same sink node, and different source nodes and different sink nodes; The processor is specifically configured to: calculate the mutually separated first LSP and second LSP of the ASON service according to the source node and the sink node contained in the user configuration information. 13. The controller of claim 11, wherein: The processor is further configured to determine whether the found second LSP is in a normal working state; The sender is further configured to send a service warning of service degradation to the network management system when the processor determines that the second LSP is in a normal working state. 14. The controller of claim 11, wherein: The processor is further configured to determine whether the found second LSP is in a normal working state; The transmitter is further configured to send a service interruption service alarm to the network manager when the processor determines that the second LSP is in a fault state. 15. The controller of claim 12 wherein, The receiver is further configured to receive a service optimization request sent by the network manager; The processor is further configured to calculate an optimized first LSP and an optimized second LSP for the ASON service according to the path information of the first LSP and the second LSP; The sender is further configured to send the configuration information of the optimized first LSP calculated by the processor to the first network element, and send the configuration information of the optimized second LSP calculated by the processor to the first network element. sending the configuration information to the second network element, to trigger the first network element to establish the optimized first LSP, to trigger the second network element to establish the optimized second LSP; Wherein, the configuration information of the optimized first LSP and the configuration information of the optimized second LSP carry the service ID of the ASON service.