Inter-domain routing technique using MPLS
US7570638B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2005 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | May 18, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
This invention is to enable inter-domain routing using MPLS. When communication is carried out passing through plural domains, respective management servers managing respective domains cooperate to carry out path constitution and optimum routing. At the path constitution, the respective management servers connect links within the respective controlling domain to constitute paths to reach a target address. When the paths are constituted, label data is notified to nodes associated with the constituted paths, and is used at the routing. At the routing, the management server controlling the source domain obtains the dynamic transmission bandwidths from the respective management servers, and identifies the routing policy from a port number of a request to be routed or the like to identify the optimum path. When the optimum path is determined, it is possible to carry out the routing using the label data held in the respective nodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.