Path modifying method, label switching node and administrative node in label transfer network
US7209434B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2002 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Oct 20, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/507
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a label transfer network, an ingress node positioned at an upstream side end of a partial section of a first data transfer path (old path) transmits a path modify request, and an egress node positioned at a downstream side end of the partial section returns a label allocation request on a detour path (new path) to the ingress node in response to reception of the path modify request for implementing partial path modification from the old path to the new path. This enables the partial path modification with only a node bearing relation to the path modification, thus shortening the time needed for the path modification and suppressing an increase in extra control traffic for a node having no relation to the path modification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.