Local forwarding bias in a multi-chassis router
US8139492B1 · kind B1 · utility
56Cited by
11References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2009 |
| Grant date | Mar 20, 2012 |
| Priority date | — |
| Expiry date | Feb 6, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/123
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques are described for reducing the amount of data traffic carried on inter-chassis links within a multi-chassis router. A multi-chassis router is described in which the packet forwarding engines (PFEs) of each chassis receive and modify forwarding structures, generated in accordance with various load-balancing protocols, to exhibit a chassis-local link preference. Each of the PFEs may implement a selection bias for forwarding paths that egress from the multi-chassis router at the member chassis that includes the ingress PFE.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.