网络工程专业 网络冗余保护技术的研究与实现

网络冗余保护技术的研究与实现I摘要现在的网络服务的安全性和可靠性变得越来越重要，如果网络中的网关设备有问题，会造成网络无法提供正常的服务。在本文中，利用集群技术一一虚拟路由器冗余协议（virtualrouterredundaneyprotoeol，简称 VRRP）高可用性实现的网关，在碰撞中的网关设备，另一个备份网关将迅速采取了工作，不会造成的网络服务中断，提高网络的服务质量。本文首先介绍了高可用性的基本技术，数据链路层和网络层冗余保护技术进行了讨论，并分析了它们各自的缺点。然后详细描述了 VRRP 协议的工作原理，包括用的概念定义的协议，该协议要求的参数，协议的运行机制，网关策略和竞选活动的实施。在 VRRP 协议的同步过程的研究中可能出现的安全和稳定性问题给出了优化的协议的方法。关键字:高可靠性;虚拟路由;冗余保护;负载均衡;vRR 卫实例IIAbstractNow the security and reliability of the network service become more and more important, if there is a problem in the network gateway equipment, will cause the network cannot provide the normal service. In this paper, using cluster technology one one virtual router redundancy protocol (virtualRouterRedundaneyprotoeol, referred to as 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 Internet service interruption, improve the quality of network service.This paper first introduces the basic technology for high availability, the data link layer and network layer redundancy protection techniques are discussed, and their respective shortcomings were analyzed. Then a detailed description of the working principle of VRRP protocol, including the protocol used in the definition of the concept, the protocol required parameters, protocol operation mechanism, gateway strategy and the implementation of the election campaign. Security and stability problems may arise in the study of VRRP protocol synchronization process,...