基于IRF的网络核心层双机热备系统的设计与实现

Design and Implementation of Dual Machine Hot Standby System at the Core Layer of the Network Based on IRF

随着互联网技术的发展和网络规模的扩大,网络核心层的设备也在逐渐增加.为了解决网络核心层多台设备带来的网络管理和维护复杂化的问题,网络设备虚拟化技术应运而生.该文针对目前几种主要的设备虚拟化技术进行了分析,基于这些技术不能以低成本和管理更加简化的方式实现网络核心层设备的冗余备份和网络的高可靠性,提出了采用IRF技术实现网络核心层设备的双机热备.IRF中两台交换机的配置严格同步,即使Master不能正常工作,备份交换机仍能够按照相同的配置继续工作,实现了网络核心层设备的双机热备,达到了提高网络可靠性和稳定性的目的 .

With the development of Internet technology and the expansion of network scale,the equipment of network core layer is gradually increasing.In order to solve the complex problem of network manage⁃ment and maintenance caused by multiple devices at the core layer of the network,network device virtual⁃ization technology came into being.In this paper,several main device virtualization technologies are ana⁃lyzed.Based on the fact that these technologies can not achieve redundant backup of network core layer devices and high reliability of network in a way of low cost and more simplified management,a dual ma⁃chine hot standby of network core layer devices is proposed by using IRF technology.The configuration of two switches in IRF is strictly synchronized.Even if Master fails to work normally,the backup switch can continue to work in the same configuration,which realizes the dual-machine hot standby of network core layer devices and achieves the purpose of improving the reliability and stability of the network.