Scalable and fault-tolerant link state routing protocol for packet-switched networks
US7480256B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2004 |
| Grant date | Jan 20, 2009 |
| Priority date | — |
| Expiry date | Jul 22, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/44
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A distributed Link-State Routing Protocol (LSRP) system in a packet switch having external communication ports has a first card executing Update process of the LSRP, making database updates, a second card executing Decision process(Shortest Path First (SPF)) of the LSRP, and a communication fabric coupling the cards with each other and the external ports. The LSRP may be an IS-IS system. In some embodiments there are additional cards involved, and the distribution of Link-State functions is over a set of multiple cards. Also in some embodiments there is a Location Service (LS) controller monitoring and configuring cards in the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.