Method for rerouting MPLS traffic in ring networks
US7388828B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 29, 2004 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | Aug 16, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is described for fast rerouting, in case of a fault, packets of MPLS traffic in a ring-like network configuration, where the MPLS traffic is formed by one or more Label Switched Paths (LSPs) entitled to protection. The method comprises rerouting the MPLS packets to a protection path in the ring, providing the rerouted MPLS packets with additional labels to their respective label stacks, and then detecting the additional labels at network nodes included in the protection path. Detection of the additional labels further allows determining egress nodes of the rerouted MPLS packets and outputting the rerouted MPLS packets at their corresponding egress points from the protection path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.