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Method and device for deleting link state notification

A link status notification and link status technology, applied in the communication field, can solve the problems of LSAs being unable to be deleted and waste of resources, and achieve the effect of fast and effective deletion and saving system resources

Active Publication Date: 2019-08-30
NANJING ZHONGXING SOFTWARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention provides a method and device for deleting link state announcements, so as to at least solve the problem that LSAs that can be deleted in related technologies cannot be deleted, resulting in waste of resources

Method used

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  • Method and device for deleting link state notification
  • Method and device for deleting link state notification
  • Method and device for deleting link state notification

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Embodiment Construction

[0027] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0028] In this embodiment, a method for deleting a link state notification is provided, image 3 is a flowchart of a method for deleting a link state notification according to an embodiment of the present invention, such as image 3 As shown, the process includes the following steps:

[0029] Step S302, when the duration of the first LSA reaches a first preset value, determine whether the first LSA is in the retransmission list of the neighbor;

[0030] Step S304, if the first link state announcement is not in the neighbor's retransmission list, then obtain the number of neighbors in the database digest exchange phase and the number of neighbors in the database synchronization completion phase with...

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Abstract

Disclosed are a device and a method for deleting a link state advertisement (LSA). The method comprises: when a duration of the existence of a first LSA satisfies a first preset value, determining whether the first LSA is in a neighbor retransmission list; if not, obtaining the number of neighbors in a database abstraction exchange stage and the number of neighbors in a database synchronization completion stage within a propagation range of the first LSA; if the number of neighbors in the database abstraction exchange stage is equal to the number of neighbors in the database synchronization completion stage, deleting the first LSA. The present invention at least addresses the problem of wasting resources due to failure in deleting the deletable LSA in the relevant art.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and device for deleting link state notifications. Background technique [0002] There are two main types of dynamic routing protocols, one is the distance vector routing algorithm, and the other is the link state routing algorithm. Distance vector routing algorithms include Routing Information Protocol (Routing Information Protocol, referred to as RIP), Border Gateway Protocol (Border Gateway Protocol, referred to as BGP), link state routing algorithms include Open Shortest Path First (Open Shortest Path First, referred to as OSPF), Intermediate System-to-Intermediate System (Intermediate System-to-Intermediate System, referred to as ISIS). In the distance vector routing algorithm, each router maintains a table, which lists the currently known best path to each destination, and these tables are constantly updated by exchanging information between neighbors, and fin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/701
Inventor 何建军
Owner NANJING ZHONGXING SOFTWARE