Signaling MPLS over RPR rings
US7483399B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Feb 20, 2003 |
| Grant date | Jan 27, 2009 |
| Priority date | — |
| Expiry date | Jan 8, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Explicit routing of network traffic over RPR rings using MPLS signaling techniques, including unnumbered links. A modified LSP_TUNNEL_INTERFACE_ID object is provided with a RPR IP address instead of the conventional LSR Router ID, and with a direction indicator in place of the conventional interface ID. A novel subobject is included in the ERO and RRO, which holds the RPR IP address of the sending node in place of the conventional router ID, and a direction indicator in place of the conventional interface ID. The network nodes inspect the directional indicator that is received in a path message or a Resv message to determine the direction in which traffic is to be sent and received in an explicit route.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.