J. Papán, P. Segec, M. Moravčík, Martin Konštek, L. Mikuš, J. Uramová
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引用次数: 17
Abstract
IP Fast Reroute (IPFRR) is resiliency technology to provide fast traffic recovery upon link or node failure for mission critical services. This technology is able to recover impacted traffic in 50 ms upon any single link or node failure. The key aspect of IP Fast Reroute technology is fast failure detection and pre-calculation of alternative path in advance, before the link or node failure occurs. If specific failure within the network occurs, IP Fast Reroute mechanism uses this pre-calculated alternative path to bypass failure and restores communication. In this paper, we bring survey of advanced Fast Reroute solutions for IP-based intra-domain networks. There have been several approaches proposed such as Directed LFA, Topology Independent LFA, BIER-TE FRR and others.
IPFRR (IP Fast Reroute)是一种弹性技术，可以为关键业务提供链路或节点故障时快速恢复流量的能力。该技术能够在任何单个链路或节点故障的情况下在50毫秒内恢复受影响的流量。IP快速路由技术的关键是在链路或节点发生故障之前，进行快速故障检测和备选路径的预先计算。如果网络中发生特定的故障，IP快速路由机制使用这个预先计算的替代路径来绕过故障并恢复通信。本文综述了基于ip的域内网络的快速路由解决方案。目前已经提出了几种方法，如定向LFA、拓扑无关LFA、BIER-TE FRR等。
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