Invention Grant
- Patent Title: Segment routing traffic engineering (SR-TE) with awareness of local protection
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Application No.: US17017805Application Date: 2020-09-11
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Publication No.: US12058026B2Publication Date: 2024-08-06
- Inventor: Muthurajah Sivabalan , Sami Boutros , Cengiz Alaettinoglu
- Applicant: Ciena Corporation
- Applicant Address: US MD Hanover
- Assignee: Ciena Corporation
- Current Assignee: Ciena Corporation
- Current Assignee Address: US MD Hanover
- Agency: Baratta Law PLLC
- Agent Lawrence A. Baratta, Jr.
- Main IPC: H04L45/12
- IPC: H04L45/12 ; H04L45/00 ; H04L45/24

Abstract:
Systems and methods for Segment Routing Traffic Engineering (SR-TE) with awareness of local protection include the advertisement of local protection information in effect at each SR capable node via Interior Gateway Protocol (IGP), Border Gateway Protocol Link-State advertisement (BGP-LS), telemetry, etc. This information can include identity (IP address) of protected elements (link/node), type of protection (node, link, SRLG), a SID list for the backup path, whether protection is active, etc. This information can also be advertised via Path Computation Element Protocol (PCEP) as well. The information can also include a Binding SID (BSID) in the advertisement for local backup paths. Further, the present disclosure can enable a new SR OAM message (probe) to instruct a node to activate/deactivate a specific backup path in the forwarding plane for testing purposes.
Public/Granted literature
- US20220086078A1 Segment Routing Traffic Engineering (SR-TE) with awareness of local protection Public/Granted day:2022-03-17
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