CN116866366A - Method, system and device for efficiently recovering PCEP tunnel - Google Patents
Method, system and device for efficiently recovering PCEP tunnel Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
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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
- H04L12/4633—Interconnection of networks using encapsulation techniques, e.g. tunneling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/565—Conversion or adaptation of application format or content
Abstract
The invention relates to a method, a system and a device for efficiently recovering a PCEP tunnel. The method mainly comprises the following steps: mapping the abstract PCEP model into a unified configuration model; the tunnel and the path calculation result created by the PCE are stored in a persistent mode in a unified configuration model format; when the version is updated, the PCEP tunnel is restored directly through the persistent file generated by the unified configuration model; after the upgrade is restarted, only the tunnel with the change in the restarting period is issued, and the full synchronization of the tunnel is not carried out. When the equipment version is upgraded, the service data and the PCEP tunnel are recovered through the unified persistent file, so that the problem of multi-source recovery time sequence is solved, and the service recovery speed is greatly accelerated; after equipment upgrading is started, the PCE only needs to synchronize the tunnel with the change in the restarting period, so that the synchronous data volume between the PCC and the PCE is obviously reduced, and the network overhead and the network bandwidth are saved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, a system, and an apparatus for efficiently recovering a PCEP tunnel.
Background
The Segment Routing (SR) adopts a source Routing concept and a tunnel technology, and guides message forwarding by encapsulating Segment identifiers (Segment IDs, SIDs) of paths to be distributed by nodes in source nodes in advance, so that the path control and adjustment can be flexibly and simply realized by matching with a centralized path calculation module. At present, SR supports two data planes of MPLS (Multi-Protocol Label Switching, multiprotocol label switching) and IPv6 (sixth generation Internet protocol), an SR-TE (Segment Routing Traffic Engineering ) tunnel and an SR-MPLS Policy tunnel are established based on the MPLS data plane, and SIDs are MPLS labels; SRv6Policy (Segment Routing using IPv6 Data Plane Policy) tunnel established based on the IPv6 data plane, and SID is an IPv6 address.
In an MPLS/SRv network supporting a path computation element communication protocol (Path Computation Element Protocol, PCEP), SR/SRv tunnel creation may be triggered by a PCE server on the controller based on PCEP protocol Active Stateful PCE (Path Computation Element ) mode: PCE Initiated LSP, the PCE server, is responsible for the creation, path computation and management of these tunnels.
When the device version is updated, the tunnel created by the PCE Initiated mode is lost completely, and the PCE server is required to issue the tunnel again to restore the service, so that the version updating speed is seriously influenced. For the PCC client supporting incremental synchronization (RFC 8232), the version number of the LSP database on the equipment is reset to 1 after version upgrading, so that the whole LSP data is necessarily required to be synchronized, and the burden of the PCE server is greatly increased.
The prior art has the following problems:
as shown in fig. 1, in a VPN (Virtual Private Network ) networking topology, on an Edge (PE) device of a service Provider network, an MPLS network may deploy an SR-TE or SR-MPLS Policy tunnel through a PCEP protocol, and a SRv network may deploy SRv6Policy tunnel through a PCEP protocol for carrying two-three-layer traffic. When the PE equipment carries out version upgrading, because the tunnel created by PCE initialization on the equipment is dynamically created by the PCC client, after the equipment is upgraded and restarted, the PCEP tunnel and the path calculation result on the equipment are all lost, and tunnel recovery is completely dependent on the PCE server for retransmission. If a plurality of PE devices are upgraded at the same time, after the devices are started, the PCE server needs to reestablish session connection with the PCC client of each device, and the PCE needs to issue the tunnel initialization and the total path information to each PE device, which synchronizes the huge data volume, and forms a larger performance pressure on the PCE server, during which service interruption can seriously affect the version upgrading speed and possibly affect the customer perception.
Traffic configuration may originate from various mechanisms, such as CLI (Command Line Interface) command line configuration, a YANG model based on NETCONF (Network Configuration Protocol) network configuration protocol, PCEP protocol, etc. In the prior art, SR/SRv tunnel and path information on PE devices are supported to be issued through PCEP protocol, while other service data is issued through YANG model or CLI command, and when device version is upgraded, the recovery sequence of the service data and tunnel data from different tool ends is uncontrollable, and the problem of multi-source recovery time sequence exists.
In view of this, how to overcome the defects existing in the prior art and solve the problems existing in the prior art is a difficult problem to be solved in the technical field.
Disclosure of Invention
Aiming at the defects or improvement requirements in the prior art. The invention provides a method, a system and a device for efficiently recovering PCEP tunnels, wherein a PCEP model is mapped into a unified configuration model for persistent storage, so that the tunnels created by PCE initialization can be efficiently recovered, and meanwhile, the problem of multi-source recovery time sequence of services is solved.
The invention adopts the following technical scheme:
in a first aspect, the present invention provides a method for efficiently recovering a PCEP tunnel, including:
mapping the abstract PCEP model into a unified configuration model;
the tunnel and the path calculation result created by the PCE are stored in a persistent mode in a unified configuration model format;
when the version is updated, the PCEP tunnel is restored directly through the persistent file generated by the unified configuration model;
after the upgrade is restarted, only the tunnel with the change in the restarting period is issued, and the full synchronization of the tunnel is not carried out.
Further, the mapping the abstract PCEP model into the unified configuration model concrete includes:
and establishing association mapping between the object set of the PCEP model and the UIM class set of the unified configuration model, performing model mapping processing in an XML data coding mode, and storing the model mapping relation as an XML file.
In a second aspect, the present invention provides a system for efficiently recovering a PCEP tunnel, where the system includes a configuration mapping layer, a configuration data management layer, and a service processing layer, where the method for efficiently recovering a PCEP tunnel as described in the first aspect is applied, and the system includes:
the configuration mapping layer is responsible for mapping various information models including a PCEP model to a unified configuration model;
the configuration data management layer is responsible for unified management, distribution and storage functions of configuration model data;
and the service processing layer performs service management according to the distributed unified configuration model data.
Further, the configuration mapping layer comprises a PCEP model mapping processing unit, and the PCEP model mapping processing unit is responsible for establishing association mapping between an object set of the PCEP model and a UIM class set of the unified configuration model.
Furthermore, the PCEP model mapping processing unit performs model mapping processing through an XML data coding mode, and stores the model mapping relation as an XML file.
Further, the configuration data management layer comprises a configuration data management unit, and the configuration data management unit is provided with a unified configuration model data receiving and processing interface for acquiring unified configuration model data of the configuration mapping layer.
Further, the PCEP model mapping processing unit obtains the element mapping relation between the PCEP model and the unified configuration model by reading the XML file, and converts the PCEP message into the UIM class set of the unified configuration model.
Furthermore, through the unified configuration model data receiving and processing interface provided by the configuration data management unit, the PCEP tunnel and the calculation result UIM class set are stored in the configuration data management unit, so as to realize the PCEP model persistence storage and the issuing service processing unit.
Furthermore, when the router equipment version is upgraded, the PCEP tunnel is directly restored through the persistent file generated by the unified configuration model in the configuration data management unit without depending on the PCE server; after the router equipment is updated and restarted, the PCE server only issues tunnels with changes in the restarting period, and does not perform full-scale synchronization of the tunnels.
On the other hand, the invention provides a device for efficiently recovering the PCEP tunnel, which specifically comprises the following steps: the method comprises the steps of connecting at least one processor and a memory through a data bus, wherein the memory stores instructions executed by the at least one processor, and the instructions are used for completing the method for efficiently recovering the PCEP tunnel in the first aspect after being executed by the processor.
Compared with the prior art, the invention has the beneficial effects that:
the invention maps the PCEP model into the unified configuration model for persistent storage, and shields PCEP, CLI, YANG information model difference through the unified configuration model, thereby realizing unified service interfaces and unified storage units, reducing redundant flow processing and greatly lowering maintenance cost.
The method comprises the steps that a tunnel and a dynamic path calculation result which are created by initializing a PCE server are stored in a persistent mode in a unified configuration model format, and when equipment versions are upgraded, service data and a PCEP tunnel are recovered through unified persistent files, so that the problem of multi-source recovery time sequence is solved, and the service recovery speed is greatly increased; after equipment upgrading is started, the PCE only needs to synchronize the tunnel with the change in the restarting period, so that the synchronous data volume between the PCC and the PCE is obviously reduced, and the network overhead and the network bandwidth are saved.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings that are required to be used in the embodiments of the present invention will be briefly described below. It is evident that the drawings described below are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
Fig. 1 is a schematic diagram of VPN networking topology of a PCEP protocol provided in the present invention;
FIG. 2 is a schematic diagram of issuing a multi-source configuration of a PCEP model, a CLI command line and a YANG model provided by the invention;
FIG. 3 is an exemplary diagram of a unified mapping configuration model for issuing SRv6Policy tunnels by three information models, namely PCEP, CLI command line and YANG, provided by the invention;
fig. 4 is a system block diagram of efficient restoration of a PCEP tunnel provided in embodiment 1 of the present invention;
fig. 5 is a schematic diagram of a PCEP model mapping unified configuration model XML file provided in embodiment 1 of the present invention;
fig. 6 is a timing chart of PCEP tunnel creation update, model mapping, and persistence processing provided in embodiment 1 of the present invention;
fig. 7 is a flowchart of PCEP tunnel recovery processing during device version upgrade provided in embodiment 1 of the present invention;
fig. 8 is a flowchart of a method for efficiently recovering a PCEP tunnel provided in embodiment 2 of the present invention;
fig. 9 is a schematic structural diagram of an apparatus for efficiently recovering a PCEP tunnel according to embodiment 3 of the present invention.
Detailed Description
Referring to fig. 1, the embodiment of the present invention is applied to an MPLS network or SRv network including a PCE server and a PCC client, where the embodiment of the present invention is applicable to an SR tunnel and a SRv tunnel created on a PE device by PCE Initiated LSP, where the PCE stores network topology and link resource information of the whole network, triggers tunnel creation and tunnel path computation according to user service configuration, and updates a tunnel calculation result in real time according to a network state, and notifies the PCC client of tunnel creation and path update.
Referring to fig. 2, service data supports various tool end delivery, for example, a controller can deliver various services and tunnel data to a device through a YANG model, can also deliver tunnel and centralized calculation results through a PCEP model, or can directly deliver configuration on the device through a CLI command line. In the prior art, after the YANG model is issued to the equipment through a Netconf message, the YANG model can be converted into a CLI command line template on the equipment; the PCE Initiated LSP mode triggers the created tunnel, the created tunnel is automatically created on the equipment after being analyzed by the PCC client, the part of the tunnel is not displayed and presented to the user on the equipment, and the user cannot directly modify the PCEP tunnel configuration on the equipment through an operation command line; the interfaces are not uniform when the service processing is carried out on tunnel configuration from different tool ends, so that the service processing flow is redundant.
Referring to fig. 3, SRv Policy tunnel configuration may be issued in three modes of pcitiate message of PCEP model, netconf message of YANG model, and CLI command line, and the embodiment of the present invention implements the unification of PCEP, YANG, CLI command information models through unified configuration models, and the service processing unit does not need to perceive the difference of information models.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The present invention is an architecture of a specific functional system, so that in a specific embodiment, functional logic relationships of each structural module are mainly described, and specific software and hardware implementations are not limited.
In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not form a conflict with each other, and the steps may be exchanged in order if they are logical and do not conflict with each other. The invention will be described in detail below with reference to the drawings and examples.
Example 1:
the embodiment of the invention provides a system for efficiently recovering a PCEP tunnel, which comprises a configuration mapping layer, a configuration data management layer and a service processing layer, wherein: the configuration mapping layer is responsible for mapping various information models including a PCEP model to a unified configuration model; the configuration data management layer is responsible for unified management, distribution and storage functions of configuration model data; and the service processing layer performs service management according to the distributed unified configuration model data.
In particular, referring to fig. 4, the system of the preferred embodiment generally includes two levels, namely a controller and a router device. The router device comprises a configuration mapping layer, a configuration data management layer and a service processing layer.
In the preferred embodiment, the configuration mapping layer includes a PCC client, a Netconf adaptation processing unit, a CLI command line adaptation processing unit, and a unified configuration model-UIM class set, where the PCC client includes a PCEP model mapping processing unit, which is configured to map a PCEP object into a unified configuration model, and specifically, the PCEP model mapping processing unit is responsible for establishing an association mapping between an object set (OBJ/TLV set) of the PCEP model and the UIM class set of the unified configuration model, where the PCEP model and the configuration model may have a many-to-one and one-to-many relationship, and in order to reduce coding complexity and improve mapping efficiency, the PCEP model mapping processing unit performs model mapping processing in an XML data encoding manner, and stores the model mapping relationship as an XML file. Referring to fig. 5, the content of the XML file is intercepted, and the mapping relation between the SRv Policy tunnel PCEP TLV and the UIM model element is recorded, in the example of fig. 5, the color of the TLV element is mapped with the element1 of the UIM class, the end-point of the TLV element is mapped with the element2 of the UIM class, the Policy-name of the TLV element is mapped with the element3 of the UIM class, and the reference of the TLV element is mapped with the element4 of the UIM class. Through an XML data coding mode, performing one-to-one association between the PCEP model TLV object and a unified configuration model (UIM) element, and storing the model mapping relation as an XML file; by reading the XML file, the PCEP model data may be converted into unified configuration model data.
In the preferred embodiment, when the PCC client analyzes the PCEP message, the element mapping relation between the PCEP model and the unified configuration model is obtained rapidly by reading the XML file, the corresponding element value is written into the UIM model, and the element value is stored in the configuration data management unit. After the PCEP tunnel is converted into the unified configuration model, the PCEP tunnel can be presented to a user in a CLI command line mode on equipment, so that the operation flexibility of the user is improved. On the device, the CLI command itself supports functions such as configuration validity checking, database storage, configuration rollback, etc., and after the PCEP tunnel is converted into the CLI command line, the functions can be directly implemented by using the existing architecture.
With continued reference to fig. 4, in the preferred embodiment, the configuration data management layer includes a configuration data management unit, where the configuration data management unit is provided with a unified configuration model data receiving processing interface, and is configured to obtain unified configuration model data of the configuration mapping layer, and store the unified configuration model data in a database. In the preferred embodiment, the PCEP model mapping processing unit obtains the element mapping relationship between the PCEP model and the unified configuration model by reading the XML file, and converts the PCEP message into the UIM class set of the unified configuration model. And storing the PCEP tunnel and the calculated path result UIM class set into the configuration data management unit through a unified configuration model data receiving and processing interface provided by the configuration data management unit, so as to realize the persistent storage of the PCEP model and the service processing unit.
When equipment version is updated, in the prior art, the problems of long time consumption and low efficiency of PCEP tunnel recovery exist: the CLI command and the service data issued by the YANG model can be used for storing persistent data in a CLI command line text mode, tunnel data created by PCE initialization cannot be stored as command line text, PCEP (policy and charging rules function) tunnels and calculation results are lost completely after equipment is upgraded and restarted, tunnel data is issued in a full amount again depending on PCE, the synchronous data amount is large, and version upgrading speed is seriously influenced; because the PCEP tunnel and the service data recovery sources are different, the service recovery sequence is more uncontrollable when a plurality of stations are upgraded. In the preferred embodiment, after mapping the PCEP tunnel into a unified configuration model, the PCEP tunnel may also be stored as a command line text file, and after the device is upgraded and started, all service data including the PCEP tunnel is directly recovered through the persistent file generated by the configuration model, thereby solving the problem of multi-source service recovery time sequence and greatly accelerating the service recovery speed.
In Active Stateful PCE mode, pcitiate messages are used for tunnel creation and deletion, and PCUpt messages are used for tunnel attribute, path, and status updates.
Referring to fig. 6, after the PCE server establishes session connection with the PCC client with SR and SRv6 capabilities through messages, the PCE issues tunnel addition and deletion messages (i.e., tunnel initialization creation, tunnel update, tunnel deletion messages) to the PCC through pcitiate/PCUpt, the PCC is responsible for resolving the PCEP protocol message, and by reading the model mapping relation of the model mapping XML file record, the PCEP protocol message is converted into a unified configuration model, and is sent to a configuration data management unit, and then sent to a service processing unit, the service processing unit resolves the configuration model, updates tunnel information, and the configuration data management unit performs persistent disk storage in a configuration model manner. Before equipment is upgraded, all configurations on the equipment are stored, and the PCEP tunnel and other service storage modes are indiscriminate.
Referring to fig. 7, after the device version upgrade is started, the device does not need to rely on the controller PCE server, and can directly recover the PCEP tunnel and the service data through the persistent file generated by the configuration model to improve the service recovery speed. After the PCE and the PCC reestablish session connection, the PCE only needs to synchronize the tunnel with the change during the restarting period, so as to save network overhead and network bandwidth.
In summary, in the embodiment of the invention, the PCEP model is mapped into the unified configuration model for persistent storage, and the unified configuration model is used for shielding PCEP, CLI, YANG information model differences, so that service interfaces and storage units are unified, redundant flow processing is reduced, maintenance cost is greatly reduced, a tunnel created by initializing the PCE can be efficiently recovered, and meanwhile, the problem of multi-source service recovery time sequence is solved.
Example 2:
as shown in fig. 8, an embodiment of the present invention provides a method for efficiently restoring a PCEP tunnel, which includes the following steps.
Step 100: mapping the abstract PCEP model into a unified configuration model.
Step 200: and carrying out persistent storage on the tunnel and the path calculation result created by the PCE in a unified configuration model format.
Step 300: and when the version is updated, recovering the PCEP tunnel directly through the persistent file generated by the unified configuration model.
Step 400: after the upgrade is restarted, only the tunnel with the change in the restarting period is issued, and the full synchronization of the tunnel is not carried out.
Specifically, for step 100 (mapping the abstract PCEP model to a unified configuration model), the preferred embodiment establishes an association mapping between the object set of the PCEP model and the UIM class set of the unified configuration model, performs model mapping processing by using an XML data encoding manner, and stores the model mapping relationship as an XML file. Referring to fig. 5, in the preferred embodiment, the mapping relationship between the PCEP model object (PCEP message TLV) and the unified configuration model element is stored as an XML file in an XML data encoding manner, and when the PCC client parses the PCEP message, the model mapping relationship can be obtained quickly by reading the XML file.
For step 200 (the tunnel and the path calculation result created by the PCE are stored in a unified configuration model format for persistence), the preferred embodiment maps the PCEP model to a unified configuration model UIM (Unified Information Model) class set, and then, through the unified interface provided by the configuration data management unit, the PCEP tunnel and the path calculation result are stored for persistence and issued to the service processing unit.
Referring to the example diagram of the 3srv 6Policy tunnel issuing, after the PCEP model, CLI and YANG model are converted into the unified configuration model, the service may not perceive the difference of the three information models, and only needs to process the unified configuration model data issued by the data management unit. The embodiment realizes the unification of PCEP, CLI, YANG information model data processing and memory cell unification, and realizes the unification of service interfaces.
Above, when the device version is upgraded, the device does not need to rely on the PCE server, and can directly recover the PCEP tunnel through the persistent file generated by the configuration model, after the device is upgraded and restarted, the PCE server only needs to issue the tunnel with change during the restarting period, and does not need to perform full-scale synchronization of the tunnel, thereby greatly accelerating the service recovery speed; the service data and the tunnel data issued by different source ends (PCEP, CLI, YANG) are recovered from the same storage unit of the configuration data management layer, and the recovery time sequence is controllable.
In summary, in the embodiment of the invention, the PCEP model is mapped into the unified configuration model for persistent storage, and the PCEP, CLI, YANG information model difference is shielded by the unified configuration model, so that the service interfaces and the storage units are unified, the redundant flow process is reduced, and the maintenance cost is greatly reduced. The method comprises the steps that a tunnel and a dynamic path calculation result which are created by initializing a PCE server are stored in a persistent mode in a unified configuration model format, and when equipment versions are upgraded, service data and a PCEP tunnel are recovered through unified persistent files, so that the problem of multi-source recovery time sequence is solved, and the service recovery speed is greatly increased; after equipment upgrading is started, the PCE only needs to synchronize the tunnel with the change in the restarting period, so that the synchronous data volume between the PCC and the PCE is obviously reduced, and the network overhead and the network bandwidth are saved.
Example 3:
on the basis of the method for efficiently recovering a PCEP tunnel provided in the above embodiment 2, the present invention further provides a device for efficiently recovering a PCEP tunnel, which can be used to implement the above method and system, as shown in fig. 9, and is a schematic device architecture diagram of an embodiment of the present invention. The apparatus for efficiently restoring a PCEP tunnel in this embodiment includes one or more processors 21 and a memory 22. In fig. 9, a processor 21 is taken as an example.
The processor 21 and the memory 22 may be connected by a bus or otherwise, which is illustrated in fig. 9 as a bus connection.
The memory 22 is used as a non-volatile computer readable storage medium for storing non-volatile software programs, non-volatile computer executable programs, and modules, such as the method of efficiently restoring a PCEP tunnel in embodiment 1. The processor 21 executes various functional applications and data processing of the apparatus for efficiently restoring the PCEP tunnel, that is, implements the method for efficiently restoring the PCEP tunnel of embodiment 2, by running nonvolatile software programs, instructions, and modules stored in the memory 22.
The memory 22 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some embodiments, memory 22 may optionally include memory located remotely from processor 21, which may be connected to processor 21 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The program instructions/modules are stored in the memory 22 and, when executed by the one or more processors 21, perform the method of efficiently restoring a PCEP tunnel in embodiment 2 described above, e.g., performing the various steps shown in fig. 8 described above.
Those of ordinary skill in the art will appreciate that all or a portion of the steps in the various methods of the embodiments may be implemented by a program that instructs associated hardware, the program may be stored on a computer readable storage medium, the storage medium may include: read Only Memory (ROM), random Access Memory (RAM), magnetic disk or optical disk.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. What is not described in detail in this specification is prior art known to those skilled in the art.
Claims (10)
1. A method for efficiently recovering a PCEP tunnel, comprising:
mapping the abstract PCEP model into a unified configuration model;
the tunnel and the path calculation result created by the PCE are stored in a persistent mode in a unified configuration model format;
when the version is updated, the PCEP tunnel is restored directly through the persistent file generated by the unified configuration model;
after the upgrade is restarted, only the tunnel with the change in the restarting period is issued, and the full synchronization of the tunnel is not carried out.
2. The method for efficiently recovering a PCEP tunnel of claim 1, wherein said mapping the abstract PCEP model into a unified configuration model concrete comprises:
and establishing association mapping between the object set of the PCEP model and the UIM class set of the unified configuration model, performing model mapping processing in an XML data coding mode, and storing the model mapping relation as an XML file.
3. A system for efficiently recovering a PCEP tunnel, applying the method for efficiently recovering a PCEP tunnel of any of claims 1-2, comprising a configuration mapping layer, a configuration data management layer, and a traffic handling layer, wherein:
the configuration mapping layer is responsible for mapping various information models including a PCEP model to a unified configuration model;
the configuration data management layer is responsible for unified management, distribution and storage functions of configuration model data;
and the service processing layer performs service management according to the distributed unified configuration model data.
4. The system for efficiently restoring a PCEP tunnel of claim 3, wherein the configuration mapping layer includes a PCEP model mapping processing unit responsible for establishing an association mapping between a set of objects of the PCEP model and a set of UIM classes of the unified configuration model.
5. The system for efficiently recovering a PCEP tunnel according to claim 4, wherein the PCEP model mapping processing unit performs model mapping processing by using an XML data encoding method, and stores the model mapping relationship as an XML file.
6. The system for efficiently recovering a PCEP tunnel of claim 5, wherein the configuration data management layer includes a configuration data management unit having a unified configuration model data reception processing interface for obtaining unified configuration model data for the configuration mapping layer.
7. The system for efficiently recovering a PCEP tunnel of claim 6, wherein the PCEP model mapping processing unit obtains an element mapping relationship between the PCEP model and the unified configuration model by reading the XML document, and converts the PCEP message into the UIM class set of the unified configuration model.
8. The system for efficiently recovering a PCEP tunnel according to claim 7, wherein the PCEP tunnel and the UIM class set are stored in the configuration data management unit through a unified configuration model data receiving and processing interface provided by the configuration data management unit, so as to implement the PCEP model persistent storage and service delivery processing unit.
9. The system for efficiently recovering a PCEP tunnel of claim 7, wherein the PCEP tunnel is recovered directly through a persistent file generated by a unified configuration model in the configuration data management unit, independent of the PCE server, when the router device version is upgraded; after the router equipment is updated and restarted, the PCE server only issues tunnels with changes in the restarting period, and does not perform full-scale synchronization of the tunnels.
10. An apparatus for efficiently recovering a PCEP tunnel, wherein:
comprising at least one processor and a memory connected by a data bus, the memory storing instructions for execution by the at least one processor, the instructions, upon execution by the processor, for performing the method of efficiently recovering a PCEP tunnel of any of claims 1-2.
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