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Method for realfizing router interface backup utilizing virtual router redundancy procotol

A redundant protocol and router technology, which is applied in the field of data communication, can solve the problems such as the inability to use the interface for backup, and achieve the effect of improving reliability, simple method, and expanding the scope of application

Inactive Publication Date: 2004-01-07
HUAWEI TECH CO LTD
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Problems solved by technology

[0008] The purpose of the present invention is to propose a method for utilizing the virtual router redundancy protocol to realize router interface backup, so as to overcome the disadvantage that VRRP can only be used for router backup and cannot be used for interface backup, so that the router that has run VRRP can not only realize The backup between routers can also realize the backup between interfaces with multicast or broadcast capabilities, expand the functions of the VRRP protocol, and use one protocol to meet the backup requirements of two levels

Method used

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  • Method for realfizing router interface backup utilizing virtual router redundancy procotol
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  • Method for realfizing router interface backup utilizing virtual router redundancy procotol

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Embodiment Construction

[0017] The method proposed by the present invention utilizes the virtual router redundancy protocol to realize router interface backup, and its networking diagram is as follows figure 2 As shown, first connect multiple interfaces on the router to the same LAN and join the same multicast group. The multicast packets sent by an interface can be received by any interface in the multicast group, regardless of whether these interfaces are in the same on the same router or on a different router, figure 2 Shown are two interfaces on one router. Then configure the same virtual router number and virtual IP address on the multiple interfaces connected to the same LAN, so that they can join the same virtual router. Each interface joined to the same virtual router elects the primary interface and the backup interface according to each other's priorities. When the interface is started, the interface first becomes the backup interface, and becomes the main interface after waiting for a ...

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Abstract

This invention relates to a method for realizing router interface backup by a virtual router redundant protocol which is first of all to connect multiinterface on the router into a same LAM to join in a same multicast then to arrange same virtual router number and virtual IP address on the said multi interface and let them join in a same virtual router, every interface joined in a same virtual router selects a master interface and a backup interface based on mutual priority, realizing backup between interfaces on VRRP router which does not influence the original backup between routers of VRRP, and realizing backup of default gate whether is one or many routers in network.

Description

technical field [0001] The invention relates to a method for realizing router interface backup by using a virtual router redundancy protocol, which belongs to the technical field of data communication. Background technique [0002] With the continuous improvement of people's requirements for the reliability of data communication, the backup function of data communication equipment has been paid more and more attention. A router often needs to implement multiple backup functions, such as backup between routers, backup between interfaces, backup between boards, etc. These backup functions improve the reliability of the device, but on the other hand, implementing so many backup functions also increases The development cost of technology and the burden of equipment operation. [0003] The Virtual Router Redundancy Protocol (hereinafter referred to as VRRP) is a fault-tolerant protocol, which is specially designed for a local area network (such as Ethernet) with multicast or bro...

Claims

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Application Information

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IPC IPC(8): H04L12/46
CPCH04L45/00H04L45/586
Inventor 郭宁
Owner HUAWEI TECH CO LTD
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