Main and standby method and system

An application method and technology of active state, applied in the field of communication, can solve the problems of heavy system burden, occupy large system resources, cannot support large-scale active and standby applications, etc., and achieve the effect of saving resources

Active Publication Date: 2007-08-01
HUAWEI TECH CO LTD
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AI Technical Summary

Problems solved by technology

However, with the development of MANs, 10GE has become the mainstream of MANs, and L3VPN VIP customer access has become the main business of user access. In this case, if a MAN can only carry 255 user is not enough
[0027] In addition, because each VRRP instance has its own VRRP protocol packets, and can accelerate VRRP convergence speed based on BFD (Bidirectional Forwarding Detection, bidirectional routing forwarding detection), so when VRRP instances are applied on a large scale, a large number of VRRP protocol packets The file operation will occupy a large amount of system resources, so it will cause a large system burden, so that it cannot support large-scale active and standby applications

Method used

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  • Main and standby method and system
  • Main and standby method and system

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[0061] The first embodiment provided by the present invention is a master-backup application method, the specific implementation process of which is shown in Figure 2, including the following:

[0062] Step S101 , when the user side is working normally, if the specified real VRRP instance is in the standby state, the virtual VRRP instance is also in the standby state, and does not run packets of any protocol.

[0063] When the specified real VRRP instance is in the standby state, it continuously receives packets sent by the real VRRP instance in the active state. When it receives a VRRP packet sent by a real VRRP instance with a higher priority than its own, it The timer is reset. When receiving a VRRP message sent by a real VRRP instance with a lower priority than its own, it discards the received message and does not reset the timer. When the timer time reaches the set threshold, The real VRRP instance in the standby state will switch to the active state.

[0064] Step S10...

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Abstract

The disclosed master-standby method and system comprise: when the state of real VRRP case on master state, as one or more VRRP cases in the case state, sending its fixed MAC address to the attaching device; on the latter, finding out the out-port to transmit information between user side and NPE. This invention can support VRID number more than 255, and saves system resource.

Description

technical field [0001] The invention relates to the communication field, in particular to master and backup application technologies. Background technique [0002] VRRP (Virtual Router Redundancy Protocol, Virtual Router Redundancy Protocol) was originally designed for local area networks, it can avoid single point of failure in the case of static routing, based on the VRRP can make multiple VRRP routers in LAN (LAN Local Area Network , LAN) to directly communicate with each other, so as to realize the edge access of highly reliable three-layer services. [0003] At present, the operable carrier-class metropolitan area Ethernet (referred to as metropolitan area network) is more and more popular. The network architecture of the metropolitan area network is shown in Figure 1, including CORE (core network), NPE (Network Provider Edge, network edge device), METRO Ethernet (metropolitan Ethernet), switch and one or more user-side routers. [0004] When the MAN is a Layer 2 netw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L1/22H04L29/06H04L12/28H04L12/26
CPCH04L45/28H04L45/00H04L45/22
Inventor 施震宇
Owner HUAWEI TECH CO LTD
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