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Primary access server determination method and device for dual-machine redundancy backup

A technology of accessing servers and dual-machine redundancy, which is applied in the field of communication, can solve problems such as dual-host, and achieve the effect of avoiding dual-master

Active Publication Date: 2011-04-06
南京浦口科创投资集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The main purpose of the present invention is to provide a method and device for determining the primary access server for dual-machine redundant backup, so as to at least solve the dual-host problem that may be caused in the word-of-mouth network of dual-machine hot backup

Method used

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  • Primary access server determination method and device for dual-machine redundancy backup
  • Primary access server determination method and device for dual-machine redundancy backup
  • Primary access server determination method and device for dual-machine redundancy backup

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Embodiment 1

[0043] In this instance, using figure 2 In the word-shaped network structure shown, in the case where each peer of VRRP is associated with two sets of BFD, the BFD state leads to the change of the peer priority of VRRP, as follows:

[0044] When an associated BFD state is down, the VRRP priority of the peer is lowered by an amount, for example, 10, than the "self priority".

[0045] When two BFD states are down, the VRRP priority of the peer is lower than the "base priority" by two numbers.

[0046] When a BFD state is UP, the VRRP priority of the peer is increased by an amount higher than the base priority.

[0047] When the two BFD states are UP, the VRRP priority of the peer returns to the original configured priority.

[0048] In the above process, when the VRRP Peer priority changes, the active change party immediately starts the re-election of the primary PEER.

[0049] Figure 5 It is a flow chart when the BFD state is disconnected according to Embodiment 1 of the ...

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Abstract

The invention provides primary access server determination method and device for dual-machine redundancy backup. The method comprises the following steps of: respectively associating two sets of BFDs (Bidirectional Forwarding Detection) between a first access server and a second access server; lowering the priority of the access server by one series from the current configuration priority when a set of BFDs associated with the first access server and / or the second access server are switched off; and lowering the priority of the access server by two series from the predetermined reference priority when the two sets of BFDs associated with the first access server and / or the second access server are switched off, wherein the access server the current priority of which is high is used as the primary access server. In the invention, through associating the proper dual BFDs for the primary access server and the standby access server and setting up the reference priority used as the reference, the condition that the priorities of the primary access server and the standby access server are same cannot be generated, thereby avoiding the dual-primary problem in the dual-machine hot backup.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and device for determining a primary access server for dual-machine redundancy backup. Background technique [0002] Under the development trend of IP-based telecommunication services and IP network telecommunication, in order to meet the needs of NGN / 3G and other services connected to IP bearer network, in NGN (Next Generation Network, next-generation network) bearer network, NGN service system equipment is generally Dual-homing connection to two access routers to ensure the reliability of telecom services. The access router is used as a PE (Provider Edge, operator edge) device, and VRRP (Virtual Router Redundancy Protocol, virtual router redundancy) runs between the two devices. agreement), to achieve active and standby redundancy backup. However, the basic VRRP protocol has the defect of long convergence time, which cannot meet the requirement of supporting 50 m...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L1/22
Inventor 王瑾
Owner 南京浦口科创投资集团有限公司
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