Protecting ingress and egress of a label switched path
US8817596B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2010 |
| Grant date | Aug 26, 2014 |
| Priority date | — |
| Expiry date | Jan 30, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An apparatus comprising a backup node coupled to an ingress node of a point-to-multipoint (P2MP) label switched path (LSP) and to a plurality of next-hop nodes of the ingress node of the P2MP LSP via a backup tree, wherein the backup node and the ingress node are both coupled to an external node, and wherein the backup node is configured to ensure data delivery in the P2MP LSP when the ingress node fails. Included is a network component comprising at least one processor configured to implement a method comprising detecting a failure in an ingress node of a P2MP LSP, receiving a data packet destined for the ingress node and to be transported by the P2MP LSP from a provider node when the ingress node fails, and transmitting the data packet on a backup tree that merges with the P2MP LSP prior to reaching an egress node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.