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Method and device for refreshing neighbor table

A neighbor table and neighbor technology, applied in the field of data management, can solve the problems of unreasonable memory occupation, accuracy and low efficiency of neighbor table refresh, and achieve the effect of avoiding unreasonable occupation and improving accuracy and efficiency

Inactive Publication Date: 2010-06-16
ZTE CORP
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  • Summary
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] It can be seen from the above that for network elements such as the local device and the peer device in the network, the above two situations will lead to low accuracy and efficiency of updating the neighbor table, and the neighbor table that is not refreshed in time will also cause memory loss. Unwarranted occupation

Method used

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  • Method and device for refreshing neighbor table
  • Method and device for refreshing neighbor table
  • Method and device for refreshing neighbor table

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Embodiment Construction

[0037] Generally speaking, no matter whether it moves in or out of the aggregation port or no longer sends out neighbor messages, as long as the subject of the neighbor information changes on the local device, it can send a termination message in the form of TTL=0; The peer device that receives the termination message can delete the invalid neighbor information of the peer device saved by itself according to the situation of TTL=0, and can save the neighbor information when it receives the latest neighbor information from the peer device .

[0038] see figure 1 , figure 1 It is a flow chart of termination message sender processing in an embodiment of the present invention, and the flow includes the following steps:

[0039] Step 101: A global NDP shutdown, an interface NDP shutdown, or moving into or out of an aggregation port occurs on network elements in the network.

[0040] Specifically, when the network element is used as a local device, if the local device sends neigh...

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Abstract

The invention discloses a method and a device for refreshing a neighbor table. A home terminal device can issue termination message indicated in the form of TTL=0 so long as the home terminal device witness main changes concerning neighbor information no matter an aggregation interface is shifted in or shifted out or neighbor message is not issued any more; an opposite terminal device receiving the termination message deletes stored invalid neighbor information of the opposite terminal device according to the situation where TTL=0 and stores the neighbor information when subsequently receiving the latest neighbor information from the opposite terminal device. Obviously, the opposite terminal device can delete stored invalid home terminal device neighbor information in time according to the termination message and provide strong supports for follow-up valid home terminal device neighbor information updating without causing neighbor information confusion corresponding to the same terminal; as a result, the method and device of the invention can both effectively improve accuracy and efficiency for refreshing the neighbor table and avoid no-terminal occupation of internal memory to the greatest extent.

Description

technical field [0001] The invention relates to the field of data management, in particular to a neighbor table refreshing method and device. Background technique [0002] In currently applied information management methods such as cluster management, NDP (Neighbor Discovery Protocol) plays a role in collecting neighbor information, and the collected neighbor information can be applied to update a neighbor table. [0003] In the existing neighbor table management mechanism, when the local device changes (for example: from sending neighbor information to no longer sending neighbor information), the peer device cannot immediately perceive it. This is because the peer device stores the aging time of the neighbor information of the local device, and the peer device can update the neighbor information of the local device stored by itself only after the aging time is cleared. [0004] In addition, port changes and other circumstances will also cause the local device to change fro...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04L12/56
Inventor 陈晶鑫
Owner ZTE CORP
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