发明授权
- 专利标题: Refresh interval independent fast reroute facility protection tear down messaging
- 专利标题(中): 刷新间隔独立快速重路由设备保护拆除消息
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申请号: US14585683申请日: 2014-12-30
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公开(公告)号: US09590895B2公开(公告)日: 2017-03-07
- 发明人: Chandrasekar Ramachandran , Markus Jork , Yakov Rekhter , Harish Sitaraman
- 申请人: Juniper Networks, Inc.
- 申请人地址: US CA Sunnyvale
- 专利权人: Juniper Networks, Inc.
- 当前专利权人: Juniper Networks, Inc.
- 当前专利权人地址: US CA Sunnyvale
- 代理机构: Shumaker & Sieffert, P.A.
- 优先权: IN5340/CHE/2014 20141027
- 主分类号: H04L12/24
- IPC分类号: H04L12/24 ; H04L12/703 ; H04L12/723 ; H04L12/751 ; H04L12/913 ; H04L12/911 ; H04L12/707 ; H04L29/06
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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