Border gateway protocol procedures for multi-protocol label switching and layer-2 virtual private networks using Ethernet-based tunnels
US8117338B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 17, 2008 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | May 19, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/4675
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Described are a network device and method for distributing routing information for a virtual private network (VPN) application through a packet-switched network (PSN) from a first provider edge (PE) router to a second provider edge (PE) router. An Ethernet switched path (e.g., a Provider Backbone Transport (PBT) tunnel) is established between the first and second PE routers. The first PE router is at a source end of the Ethernet switched path and the second PE router is at a destination end of the Ethernet switched path. A BGP (Border Gateway Protocol) message is sent from the first PE router to the second PE router. The BGP message contains routing information for a VPN route in a VPN supported by the PSN. An association between the VPN route in the VPN and the Ethernet switched path is determined from the routing information in the BGP message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.