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Virtual router redundancy protocol fault detection method and router equipment

A redundancy protocol and fault detection technology, applied in the field of communication, can solve the problem of long convergence time and achieve the effect of fast fault detection

Inactive Publication Date: 2014-11-26
航天神洁(宁夏)科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the minimum time interval of the HELLO message is usually 1 second, the standby router can detect the link failure status at least 3 seconds. This convergence time is too long for real-time services that need to quickly perceive the link failure status.

Method used

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  • Virtual router redundancy protocol fault detection method and router equipment
  • Virtual router redundancy protocol fault detection method and router equipment
  • Virtual router redundancy protocol fault detection method and router equipment

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0024] According to this embodiment, a method for fault detection of a virtual routing redundancy protocol, such as figure 1 As shown, in a VRRP group including an active router and one or more standby routers, the active router and the standby router send a link detection message with an echo response function, and the link detection message The destination address is the virtual address of the VRRP group, and the active router and the standby router monitor whether they receive the response message corresponding to the link detection message sent by themselves within a predetermined time, if the active router And / or if the standby router does not receive the response message within a predetermined time, it is determined that the active router is faulty.

[0025] Optionally, the link detection packet is an ECHO type BFD packet.

[0026] The application scenario of this embodiment is as follows figure 2 shown. The virtual router VRRP group includes three routers, namely th...

Embodiment 2

[0031] Corresponding to the method for fast convergence of the above-mentioned virtual routing redundancy protocol, an embodiment of the present invention further provides a routing device. Such as Figure 6 As shown, it is a structural schematic diagram of the routing device, which is applied to a virtual router redundancy protocol VRRP group including one active router and one or more backup routers, and the routing device is the active router and the One of the standby routers, the routing device includes a sending module 601 , a determining module 602 and a switching module 603 .

[0032] The sending module 601 sends a link detection message with an echo response function, and the destination address of the link detection message is the virtual IP address of the VRRP group where it is located;

[0033] The determining module 602 determines whether a response message corresponding to the link detection message sent by the sending module 601 is received within a predetermin...

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Abstract

The invention provides a virtual router redundancy protocol (VRRP) fault detection method and router equipment. The VRRP fault detection method is applied to a VRRP set comprising a main router and one or more standby routers. The method comprises the following steps that the main router and the standby routers send link detection messages with an echo response function, wherein the destination addresses of the link detection messages are the virtual address of the VRRP set; the main router and the standby routers determine whether the main router and the standby routers receive response massages corresponding to the link detection messages sent by themselves in preset time, and if the main router and / or the standby routers do not receive the response massages in the preset time, it is determined that the main router breaks down.

Description

technical field [0001] The invention relates to the field of communication, in particular to a method for detecting a virtual router redundancy protocol failure and a routing device. Background technique [0002] The Virtual Router Redundancy Protocol (VRRP for short) is a fault-tolerant protocol. This protocol combines several physical routing devices to form a virtual routing device, and uses a certain mechanism to ensure that when the next-hop router of the host fails, the service will be switched to other routers in time, so as to maintain the continuity and reliability of communication . [0003] VRRP divides a group of routers in the LAN together, which is called a VRRP backup group (VRRP group for short). A VRRP group is equivalent to a virtual router with a virtual IP address. Hosts in the LAN only need to know this virtual IP address and Set it as the next hop address of the default route, then you can communicate with the outside through this virtual router. A V...

Claims

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Application Information

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IPC IPC(8): H04L12/713H04L12/26H04L12/24H04L45/28H04L45/586H04L45/24
CPCH04L43/10H04L45/586H04L43/0817H04L45/22H04L12/4641H04L45/28
Inventor 章成松张强文双全
Owner 航天神洁(宁夏)科技发展有限公司
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