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

An access server, dual-machine redundancy technology, applied in the field of communication, can solve problems such as dual-host, and achieve the effect of avoiding dual-host use

Active Publication Date: 2014-09-10
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

Examples

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Embodiment 1

[0043] In this example, use figure 2 As shown in the spoken network structure, when each peer of VRRP is associated with two sets of BFD, the BFD state causes the priority of VRRP to change, and there are four situations as follows:

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

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

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

[0047] When the two BFD states are Up, the VRRP priority of the peer is restored to the original configuration priority.

[0048] In the above process, when the peer priority of VRRP changes, the actively changing party immediately starts re-election of the primary PEER.

[0049] Figure 5 It is a flowchart when the BFD state is disconnected according to the first embodiment of the prese...

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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, and in particular to a method and device for determining a primary access server for dual-computer redundancy backup. Background technique [0002] Under the development trend of IP-based telecom services and telecom-based IP networks, in response to the need for NGN / 3G services to be connected to the IP bearer network, in the NGN (Next Generation Network) bearer network, the NGN service system equipment is generally Dual-homing is connected to two access router devices to ensure the reliability of telecommunications services. The access router is used as a PE (Provider Edge) device. VRRP (Virtual Router Redundancy Protocol) runs between the two devices. Protocol), to achieve primary and standby redundant backup. However, the basic VRRP protocol has the defect of long convergence time, which cannot meet the requirement of supporting 50ms carrier-class switching. On the basis of the basic VRRP p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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