Segment routing traffic engineering (SR-TE) with awareness of local protection
US12058026B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2020 |
| Grant date | Aug 6, 2024 |
| Priority date | — |
| Expiry date | Sep 28, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/40
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.