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55858写 网络冗余保护技术的研究与实现.doc
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55858写 网络冗余保护技术的研究与实现.doc55858写 网络冗余保护技术的研究与实现.doc55858写 网络冗余保护技术的研究与实现.doc55858写 网络冗余保护技术的研究与实现.doc55858写 网络冗余保护技术的研究与实现.doc55858写 网络冗余保护技术的研究与实现.doc55858写 网络冗余保护技术的研究与实现.doc
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网络冗余保护技术的研究与实现
摘要
.现在网络服务的安全性和可靠性变的越来越重要,如果网络中的网关设备出
现问题,将会导致网络不能提供正常的服务。本文利用集群技术一一虚拟路由冗
余协议(virtualRouterRedundaneyprotoeol,简称 VRRP)来实现网关的高可用性,使
得在一台网关设备宕机时,另外一个备份网关会及时接管转发工作,不会造成互联
网业务中断,提高了网络服务质量。
本文首先介绍高可用性的基本技术,对常用的数据链路层和网络层冗余保护
技术进行了论述,并对它们各自的不足进行了分析。然后详细说明了 VRRP 协议
的工作原理,包括协议中所用到概念的定义、协议运行所需参数的确定、协议运
行的内在机制、网关的选举策略和选举实施。在研究 VRRP 协议同步过程中可
能出现的安全性和稳定性问题后,给出了优化该协议的改进方案。
关键字:高可靠性;虚拟路由;冗余保护;负载均衡;vRR 卫实例
Abstract
Now 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, gives the
methods to optimize the protocol.
Keywords: high reliability; virtual router redundancy; protection; load balancing;
vRR Wei examples
目 录
摘要.........................................................................................................................I
Abstract..................................................................................................................II
第一章概述............................................................................................................1
........................................................................................................................1
第二章构建冗余保护网络的基本方法................................................................2
........................................................................................................................2
........................................................................................................................2
................................................................................................................2
................................................................................................................3
........................................................................................................................3
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................................................................................................................4
第三章 VRRp 应用设计与实现...........................................................................4
........................................................................................................................4
................................................................................................................4
................................................................................................................5
................................................................................................................5
........................................................................................................................5
3.2.18016 的软、硬件配置...................................................................5
................................................................................................................6
................................................................................................................7
........................................................................................................................8
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................................................................................................................9
..............................................................................................................20
..............................................................................................................20
..............................................................................................................21
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