Method for implementing virtual router redundancy protocol switching between primary/standby devices

A redundant protocol and backup equipment technology, applied in the field of network communication, can solve problems such as interruption of uplink business, failure to establish LSP, failure of IGP/BGP route convergence, etc., to achieve the effect of shortening time and avoiding interruption of uplink business

Active Publication Date: 2007-05-23
HUAWEI TECH CO LTD
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  • Abstract
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Problems solved by technology

[0011] The disadvantage of this method is: According to the above description, there are many reasons for the interruption of the uplink service after the handover, for example, the LSP has not been established, the IGP / BGP route has not converged, and the remote route has not been learned.
Therefore, simply monitoring the status of the uplink of the VRRP device cannot guarantee that the uplink service will not be interrupted after the handover
Although the method can be extended by monitoring the existence or non-existence of routes, the number of monitored routes is limited, and the results of monitoring routes can only partially reflect the availability of uplink services, and the results are used as the basis for the switchover of the active and standby devices , will still cause a large area of ​​uplink business interruption

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  • Method for implementing virtual router redundancy protocol switching between primary/standby devices
  • Method for implementing virtual router redundancy protocol switching between primary/standby devices

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Embodiment Construction

[0049] The present invention provides a method for realizing VRRP switchover between primary and backup devices. The core of the present invention is: each VRRP device monitors the state of its uplink interface and specified route, as well as its uplink According to the status of various designated IGP and other protocols, adjust the priority of the VRRP device according to the monitoring results.

[0050] Describe the method of the present invention in detail below in conjunction with accompanying drawing, the specific processing flow of the method of the present invention is as shown in Figure 2, comprises the following steps:

[0051] Step 2-1. Each VRRP device monitors various statuses such as various designated IGP protocol states, interface states, and designated route states on its uplink, and adjusts the priority of the VRRP device according to the monitoring results.

[0052] In the present invention, each VRRP device monitors the states of protocols such as various d...

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Abstract

The invention relates to a method for realizing VRRP (virtual route abundant protocol) switch between main and backup devices, wherein said method comprises that: each VRRP device detects the state of all appointed protocols of ascending chain; the VRRP device via the detecting result adjusts priority; via the priority relation of VRRP devices, switch VRRP between main and backup devices. The invention can select switch time accurately, and avoid service interruption.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a method for realizing VRRP (Virtual Router Redundancy Protocol, Virtual Router Redundancy Protocol) switching between primary and backup devices. Background technique [0002] With the development of network technology, users have increasingly higher requirements for network reliability. User equipment usually requires access to dual gateways, and VRRP runs between the two gateways. VRRP can make the switching of gateway equipment transparent to user equipment. Figure 1 shows a typical VRRP network. In a VRRP network, which device is the primary device and which device is the backup device is determined according to the priority configured on each device. [0003] Only the active device can receive the packets uploaded by the user equipment and forward the packets to the upper-layer network. When for some reason, the priority of the standby device is higher than that of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L12/56H04L45/586
Inventor 熊怡
Owner HUAWEI TECH CO LTD
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