Point-to-multipoint (P2MP) resilience for GMPLS control of ethernet
US8274989B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2007 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Nov 17, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/28
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In an Ethernet network multiple point-to-multipoint (P2MP) trees are constructed to provide a P2MP service. Each tree provides service from a common root node to common leaves via different paths through the network. GMPLS signaling is utilized for configuring and maintaining the P2MP trees at each of the nodes in the network forming the respective tree. Each tree is constructed using a unique VID/MAC combination wherein the VID is unique to the tree and the MAC is associated with the multicast group identifying the P2MP membership. Traffic is forwarded through the network by the designated tree(s) by the VID/MAC DA combination by the common root node. The varying paths of each tree improves fault tolerance and enables redundancy and protection switching to be provided. Each tree of the service can be modified or repaired while traffic is still being routed through the remaining working tree(s), thus service impact is minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.