A method and system for realizing N+1 redundant backup and load share

Abstract

The invention relates to a method for realizing service N+1 redundancy backup and load sharing, wherein N>=1, comprising: a step 1, setting a load sharing policy schedule; a step 2, the N+1 block of service treatment line cards shares a IP; a step 3, a interface line card completes the service redundancy backup and load sharing between service treatment line cards. When blocks of service treatment line cards go out of order at the same time, the service treatment still keeps a continuity; and when the flow of traffic of subscriber is oversized, the flow between blocks of service treatment line cards is imbalance, by which the service treatment caused appears congesting.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method and system for realizing N+1 redundant backup and load sharing of services. Background technique [0002] With the continuous expansion and application of data communication services, new requirements are put forward for data services. In order to meet the new requirements of data services, the first method is to provide fault-tolerant backup of services: when a service processing line card fails, the service will be switched to the backup line card in time; the second method is a service processing line card processing The capacity is limited. When a large number of users send requests, the business processing load needs to be shared among multiple business processing line cards. [0003] For the first method, the current solution provided by communication products is usually a 1+1 backup solution, that is, the two business processing line cards are mutua...

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Problems solved by technology

[0004] For the second method, the usual solution is to increase the number of business processing line cards, but each business processing line card needs to be configured with a different IP address, and they work independently without coordination with each other.

[0005] The first method can only achieve 1+1 backup, not N+1 backup (N≥1), that is, when two service processing line cards fail, the service can only be suspended

[0006] For the second method, the business load is usually distributed to multiple business processing line cards, but each business processing line card must be configured with a different IP address. In this situation, it is not conducive to the development of 3G data services; on the other hand, there is no cooperation between multiple service processing line cards, and each service processing line card only knows its own service traffic and does not know the information of other service processing line cards. Some service processing line cards have very little traffic, while some service processing line cards are congested

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