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Judging method for failure of main router of virtual route redundancy protocol and router

A redundant protocol and router technology, applied in the field of data communication, can solve problems such as communication interruption and data loss, and achieve the effect of preventing the main and backup elections

Inactive Publication Date: 2013-02-27
刘德连
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of static routing simplifies the complexity of network management and reduces the communication overhead of terminal devices, but it still has a disadvantage: if the router as the default gateway is damaged, all communications using the gateway as the next hop host must be interrupted
If the transmission rate is 100Mbps (megabit / second), then 300Mbits of data will be lost due to routing failure

Method used

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  • Judging method for failure of main router of virtual route redundancy protocol and router
  • Judging method for failure of main router of virtual route redundancy protocol and router
  • Judging method for failure of main router of virtual route redundancy protocol and router

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Embodiment Construction

[0045] The inventive idea of ​​the present invention is: for each router configuration switching judgment parameters, including statistical parameter N and message threshold M, N and M are natural numbers, N≥M, M≤3; each backup router is calculated according to the following formula according to statistical parameters The respective statistical period T: T=N*advertisement time period + slope time; each backup router counts the number of times that no VRRP advertisement message is received in its own statistical period, and the number of times that no VRRP advertisement message is received within the statistical period When the accumulative packet threshold M is reached, a master / standby election is initiated.

[0046] The parameter N of the notification statistical period and the threshold M for starting the master-standby election can be determined through the configuration of the master-standby router, or can be transmitted through the extension of the field of the VRRP messa...

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Abstract

The invention discloses a judging method for failure of a main router of a virtual route redundancy protocol and a router, which can shorten the time for judging the failure of the main router, thereby shortening the switching time and reducing the loss of traffic flow. The method of the invention comprises the following steps: switching and judging parameters are configured for each router, the switching and judging parameters comprise a statistical parameter N and a message threshold M, N and M are natural numbers, N is greater than or equal to M, and M is less than or equal to 3; each backup router computes the respective statistical cycle T by the following expression: T is equal to N multiplies announcing time cycle plus slope time according to the statistical parameter; and each backup router counts the number of times that the VRRP announcing message is not received in the respective statistical cycle, and when the accumulated number of times that the VRRP announcing message is not received in the statistical cycle achieves the message threshold M, main and backup election is originated.

Description

technical field [0001] The invention relates to the field of data communication, in particular to a method for judging failure of a main router of a Virtual Router Redundancy Protocol (VRRP) and a router. Background technique [0002] In a network based on the TCP / IP protocol, in order to ensure communication between devices that are not directly connected physically, routes must be specified. Currently, there are two commonly used methods for specifying routes: one is dynamic learning through routing protocols (such as internal routing protocols RIP and OSPF); the other is static configuration. It is unrealistic to run a dynamic routing protocol on each terminal. Most client operating system platforms do not support dynamic routing protocols. Even if they support it, they are limited by many problems such as management overhead, convergence, and security. Therefore, static routing configuration for terminal IP devices is generally adopted, and generally one or more default...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/713H04L45/586
Inventor 刘志伟高露
Owner 刘德连