Fast convergence of EVPN networks for multi homing topologies
US9860150B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2015 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Dec 12, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/66
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In general, techniques of this disclosure may enable a remote provider edge (PE) router to improve convergence time in response to a link failure in an Ethernet Virtual Private Network (EVPN) by establishing per-Ethernet Segment Identifier (ESI) Bidirectional Forwarding Detection (BFD) sessions with other PE routers that are coupled to the PE router in an EVPN. The remote PE may determine that at least two PE routers with the remote PE are locally connected to a multi-homed customer network by a particular Ethernet Segment. The remote PE may send, based on determining that the at least two PE routers are connected to the multi-homed customer network by the particular Ethernet Segment, an ESI Ping request packet through the intermediate network to one of the at least two PE routers, wherein the ESI Ping request packet includes at least a BFD discriminator and an ESI for the particular Ethernet Segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.