Method for automatic detecting interruption of route link in OSPF multiple access network

A multi-access, router technology, applied in data exchange networks, digital transmission systems, electrical components, etc., can solve problems such as the inability to achieve complete monitoring of network topology

Inactive Publication Date: 2010-06-02
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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Problems solved by technology

[0007] In order to overcome the shortcoming that the complete monitoring of the network topology cannot be realized in the prior art, the present invention proposes a method for automatically detecting the interruption of the router link on the OSPF multi-access network by using Network LSA

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  • Method for automatic detecting interruption of route link in OSPF multiple access network
  • Method for automatic detecting interruption of route link in OSPF multiple access network
  • Method for automatic detecting interruption of route link in OSPF multiple access network

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Embodiment Construction

[0024] In order to realize the complete monitoring of OSPF network topology based on LSA information, a method for automatically detecting link interruption of OSPF routers is needed. Among the LSAs defined by the OSPF protocol, only the Router LSA and Network LSA describe the link information of the router. The Router LSA is generated by each router running the OSPF protocol, and is used to describe the link from its own router to the other party. The above-mentioned peer can be a neighbor router. Or multi-access network; Network LSA is generated by the DR on the multi-access network, and is used to describe the link from the multi-access network to the router on the network.

[0025]As mentioned in the background technology, Router LSAs cannot be collected by LSA collectors in some network topologies, so the method of automatically detecting OSPF router link interruption based on Router LSAs is not suitable for certain network topologies and LSA collector network access locat...

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Abstract

The method comprises: when receiving Network LSA, according to the retrieve data storage file of Network LSA and the link information group of the instance previously received by the LSA, the link information group of the instance currently received by the LSA is saved in the data storage file; the link having interruption is found by comparing the link information group of currently- received instance with the link information group of previously-received instance.

Description

technical field [0001] The invention relates to the technical field of computer network topology monitoring, in particular to a method for automatically detecting router link interruption on an OSPF multi-access network by using Network LSA. Background technique [0002] The Open Shortest Path First (Open Shortest Path First, OSPF) protocol is a link-state based autonomous system (Autonomous System, AS) interior gateway routing protocol. The protocol uses Link State Advertisement (LSA) to describe router links and routing information. The OSPF protocol defines 11 different announcement types of LSAs. There are 5 commonly used types, which are router LSA (Router LSA), network LSA (Network LSA), network aggregation LSA (Network Summary LSA), autonomous system boundary Router summary LSA (ASBR Summary LSA) and autonomous system external LSA (AS External LSA). Among them, Router LSA and Network LSA describe router link information. Router LSA is generated by each router runnin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L12/56
Inventor 何坤明毕经平李忠诚
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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