Failure protection for P2MP tunnel tail-end node
US8355315B2 · kind B2 · utility
3Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2006 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | Apr 8, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/552
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a primary tail-end node (PTE) of a point-to-multipoint (P2MP) tunnel selects a backup tail-end node (BTE) from one or more BTEs that are configured to forward traffic to a same multicast network as the PTE. The PTE then determines a branching node of the P2MP tunnel to reach the PTE and the selected BTE, and notifies the branching node of the selected BTE. In response, the branching node establishes a backup tunnel to the selected BTE, and redirects P2MP traffic onto the backup tunnel to the selected BTE in response to a detected failure of the PTE.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.