Multi-point and rooted multi-point protection switching
US8165031B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 2008 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Mar 31, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/66
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention relates to techniques for allowing one or more edge nodes in a backbone network to quickly and efficiently switch traffic delivery from a first virtual network to a second virtual network in response to a failure occurring in association with the first virtual network. In certain embodiments, an edge node is capable of independently detecting that a failure has occurred on the first virtual network and quickly transitioning from the first virtual network to the second virtual network for receiving or delivering traffic. Upon detecting the failure in the first virtual network, the edge node will begin delivering traffic over the second virtual network. If control messages are not already being provided over the second network, the edge node may begin providing the control messages over the second virtual network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.