网络冗余保护技术的研究与实现

AbstractNow the security and reliability of the network service become more and moreimportant,if there is a problem in the network gateway equipment,will cause thenetwork cannot provide the normal service.In this paper,using cluster technology oneone virtual router redundancy protocol (virtualRouterRedundaneyprotoeol,referred toas VRRP)high availability to achieve the gateway,the gateway device in a crash,another backup gateway will promptly take forward work,will not cause the Internetservice interruption,improve the quality of network service.This paper first introduces the basic technology for high availability,the data linklayer and network layer redundancy protection techniques are discussed,and theirrespective shortcomings were analyzed.Then a detailed description of the workingprinciple of VRRP protocol,including the protocol used in the definition of theconcept,the protocol required parameters,protocol operation mechanism,gatewaystrategy and the implementation of the election campaign.Security and stabilityproblems may arise in the study of VRRP protocol synchronization process,gives themethods to optimize the protocol.Keywords:high reliability;virtual router redundancy;protection;load balancing;vRR Wei examples