System and method for enhancing the availability of routing systems through equal cost multipath
US6987735B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 24, 2001 |
| Grant date | Jan 17, 2006 |
| Priority date | — |
| Expiry date | Aug 27, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/243
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a networking environment including one or more network processing (NP) devices and implementing a routing protocol for routing data packets from a source NP devices to destination NP devices via a switch fabric, with each network processing device supporting a number of interface ports, a system and method for enabling a routing system to recover more quickly that the routing protocol so as to significantly reduce the occurrence of lost data packets to a failed target interface/blade. The routing system is enabled to track the operational status of each network processor device and operational status of destination ports supported by each network processor device in the system, and maintains the operational status as a data structure at each network processing device. Prior to routing packets, an expedient logical determination is made as to the operational status of a target network processing device and target interface port of a current packet to be routed as represented in the data structure maintained at the source NP device. If the target blade/interface is not operations, an alternative route may be provided by ECMP. In this manner, correct routing of packets is ensured w…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.