Network path selection for multi-homed edges to ensure end-to-end resiliency
US8724456B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 14, 2010 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Jan 24, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/3055
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques are described for selecting an alternate path for end-to-end service data traffic that traverses multi-homed routers that provide the service to customer networks. For example, as described herein, a router that is a member of a first multi-homing set connected to a layer two (L2) network with one of a plurality of first access links. The router advertises a status of one of the first access links to a second multi-homing set connected to the first multi-homing set with one or more core links. A core link database stores advertised status information for access links of the first and second multi-homing set. Upon a link failure, a path selector selects a core link to transport service data traffic and directs a switch module to switch to active a status a first access links that connects to a router in the first multi-homing set connected to the selected core link.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.