Invention Grant
- Patent Title: Topology independent fast reroute for node and SRLG local protection
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Application No.: US15431560Application Date: 2017-02-13
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Publication No.: US10462045B1Publication Date: 2019-10-29
- Inventor: Pierre Jean-Rene Francois , Clarence Filsfils
- Applicant: Cisco Technology, Inc.
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Behmke Innovation Group LLC
- Agent James M. Behmke; Stephen D. LeBarron
- Main IPC: H04L12/703
- IPC: H04L12/703 ; H04L12/24 ; H04L12/721 ; H04L12/723 ; H04L29/06

Abstract:
In one embodiment, a device in a network identifies a shortest path tree for a point of local repair in the network that excludes at least one link between the point of local repair and a neighbor of the point of local repair in the network. The device evaluates member nodes of a branch of the shortest path tree, to form a list of repair segments. The device further causes one or more segment routing labels to be added to a header of a packet based on the repair segment list and in response to a failure in the network associated with the at least one link excluded from the shortest path tree.
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