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Method and device used for synchronization of VRRP and IGP

A protocol module, router technology, applied in the field of VRRP and IGP synchronization, can solve problems such as traffic loss

Active Publication Date: 2015-01-28
NEW H3C TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] exist figure 2 In the shown network, because router C is newly added to the network, if host C forwards traffic to router C, the

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  • Method and device used for synchronization of VRRP and IGP
  • Method and device used for synchronization of VRRP and IGP
  • Method and device used for synchronization of VRRP and IGP

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Embodiment Construction

[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] In the present invention, the router running the VRRP load balancing mode starts to send out the VRRP protocol message to join the VRRP backup group after completing the convergence of all IGP protocols. When the convergence of all IGP protocols is completed, a complete routing table has been established. If you join the VRRP backup group at this time, you can forward the received packets according to the complete routing table. The complete router table starts to perform packet forwarding and may cause traffic loss problems.

[0033] see image 3 , image 3 It is a flow chart of a method for synchronizing VRRP and IGP in an embodiment of the present invention. The method is applied to a VRRP protocol module in a router ...

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Abstract

The invention provides a method and device used for the synchronization of the VRRP and the IGP. According to the technical scheme, a VRRP module in a router starts to send a VRRP massage outwards so as to add the VRRP message to a VRRP backup set after all IGP modules complete protocol convergence. By means of the method and the device, the flow loss can be avoided.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to a method and device for synchronizing VRRP and IGP. Background technique [0002] Virtual Router Redundancy Protocol (Virtual Router Redundancy Protocol, VRRP) function adds a group of routers that can undertake the gateway function to the backup group to form a virtual router. The election mechanism of VRRP determines which router undertakes the forwarding task. The host only needs to configure the virtual router as the default gateway. [0003] The VRRP load balancing mode (VRRPE for short) extends the standard protocol, and adds the load balancing function on the basis of the virtual gateway redundancy backup function provided. In VRRP load balancing mode, the Master router is responsible for assigning different virtual MAC addresses to different routers in the VRRP backup group, and responding to different virtual MAC addresses for ARP / ND requests from differen...

Claims

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Application Information

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IPC IPC(8): H04L12/803
Inventor 冯晓栋
Owner NEW H3C TECH CO LTD