Transport endpoint segments for inter-domain segment routing
US11398972B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2020 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | Aug 22, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/507
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques are described for inter-domain segment routing using transport endpoint segments. A transport endpoint segment provisioned on a router within a domain represents any intra-domain tunnel originated at the router and having reachability to an indicated endpoint within the same domain. The provisioning router advertises a transport endpoint segment identifier (TESID) for the transport endpoint segment to other routers or a controller for use in segment routing. The TESID for the transport endpoint segment remains constant regardless of which intra-domain tunnel is bound to the transport endpoint segment. The provisioning router dynamically binds the transport endpoint segment to at least one intra-domain tunnel, and any changes to the bound intra-domain tunnel are updated locally at the provisioning router. In this way, an inter-domain segment routing tunnel may be constructed as a list TESIDs that are not affected by intra-domain tunnel changes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.