Method and system for protecting label switched path
US7760621B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2007 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | Sep 30, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L47/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for protecting a label switched path is disclosed. The method includes: setting, in a record_route object node list, interface classification identifications in record_route objects corresponding to interfaces of resource reservation protocol nodes respectively, and delivering the list downstream; when a downstream resource reservation protocol node receives the record_route object node list from upstream, finding, by the downstream resource reservation protocol node, a record_route object node corresponding to a last outgoing interface of a nearest outgoing interface in the record_route object node list according to the interface classification identifications, and setting next next hop protection for a corresponding label switched path according to a protection identification of the record-route object node. A system and device for protecting a label switched path are also disclosed. With the invention, an RSVP node may implement NNHOP protection for an upstream LSP correctly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.