Fault-protection mechanism for protecting multi-protocol-label switching (MPLS) capability within a distributed processor router operating in an MPLS network
US6915445B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 8, 2002 |
| Grant date | Jul 5, 2005 |
| Priority date | — |
| Expiry date | Sep 25, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/74
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for providing fault-tolerance for Multi-Path Label Switching (MPLS) functionality in a multi-processor network routing node has the steps of (a) implementing an MPLS server application including state information, on a first and a second processor in the node; (b) designating the MPLS server on the first processor as a master server and the MPLS server on the second processor as a backup server, and providing MPLS functionality in the node with the master MPLS server; (c) directing all required MPLS events to both the master and the backup MPLS servers during operation; (d) monitoring operation of the master server; and (e) in the event of failure of the master server, designating the backup server as the master, allowing MPLS functions to continue on the routing node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.