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Label switched path node failure management for label switched paths having refresh interval independent fast reroute facility protection
Label switched path node failure management for label switched paths having refresh interval independent fast reroute facility protection
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机译:具有刷新间隔独立的快速重路由设施保护的标签交换路径的标签交换路径节点故障管理
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摘要
In one example, techniques of this disclosure may enable a point of local repair (PLR) network device to signal availability of link protection or node protection to a merge point (MP) network device and enable a network device to actively determine whether or not it is a merge point router. Based on whether or not the network device determines it is a MP, the network device may selectively clean up LSP states when there is an upstream link or node failure. The RSVP-TE protocol may be extended to enable a network device to send a tear down message to a downstream router, which may enable the downstream router to conditionally delete locale LSP state information. In some instances, a PLR network device may directly send a tear down message to a MP network device even though the PLR network device may not have a working bypass LSP.
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