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GR processing method and equipment based on OSPF protocol

A device and protocol technology, applied in the field of GR processing based on OSPF protocol, can solve the problems of unguaranteed traffic interruption, OSPF GR failure, etc., and achieve the effect of improving reliability and fault tolerance, reducing failures, and reliable GR processing

Active Publication Date: 2014-12-24
XINHUASAN INFORMATION TECH CO LTD
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  • Summary
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  • Claims
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Problems solved by technology

However, in the OSPF GR technology, if the LSA (Link State Advertisement, Link State Information Announcement) in the entire area changes, it will cause OSPF GR to fail, so there is no guarantee that no traffic interruption will occur

Method used

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  • GR processing method and equipment based on OSPF protocol
  • GR processing method and equipment based on OSPF protocol
  • GR processing method and equipment based on OSPF protocol

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Embodiment Construction

[0034] The present invention proposes a GR processing method based on the OSPF protocol, which is applied to a system including a GR restart device (such as a router) and a GR auxiliary (HELPER) device (such as a router); the GR restart device is a device that restarts the OSPF protocol , the GR auxiliary device is a device connected to the GR restart device, and the two are neighbor devices; when the OSPF protocol on the GR restart device is restarted, in order to ensure that no traffic interruption occurs, a connection between the GR auxiliary device and the GR restart device is required. Perform GR process, such as figure 1 As shown, it is a schematic diagram of the GR process between the GR restart device and the GR auxiliary device, and the process may include the following steps:

[0035] Step 101, after the OSPF protocol restart on the GR restart device is completed, based on the OSPF GR protocol, the GR restart device sends a Hello message carrying LLS (Link Local Sign...

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Abstract

The invention discloses a GR (Graceful Restart) processing method and a piece of equipment based on an OSPF (Open Shortest Path First) protocol. The method comprises the following steps: when a piece of GR auxiliary equipment determines that LSA (Link State Advertisement) changes, the GR auxiliary equipment obtains the reason that the LSA changes; if the reason that the LSA changes is that the link between the GR auxiliary equipment and a piece of GR reset equipment breaks down, the GR auxiliary equipment exits the GR procedure between the GR auxiliary equipment and the GR reset equipment, or the GR auxiliary equipment continuously executes the GR procedure between the GR auxiliary equipment and the GR reset equipment. In the invention, the flow interruption can be reduced.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a GR processing method and device based on the OSPF protocol. Background technique [0002] OSPF (Open Shortest Path First, open shortest path first) is a dynamic routing protocol based on link state, using the SPF (Shortest Path First, shortest path first) algorithm for routing calculation. In an autonomous system, each router running OSPF will collect its own link state information, and broadcast its own link state in the entire area through the Flooding (flooding) algorithm, so that a synchronized link state database is maintained within the entire area; Based on the link state database, the router can obtain the shortest path tree with itself as the root and other nodes as leaves, so as to calculate the optimal route according to the shortest path tree. [0003] It should be noted that after the OSPF protocol of the router is restarted (such as the restart caus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/733H04L45/122
Inventor 王海
Owner XINHUASAN INFORMATION TECH CO LTD
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