Local forwarding bias in a multi-chassis router
US8576721B1 · kind B1 · utility
1Cited by
13References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2012 |
| Grant date | Nov 5, 2013 |
| Priority date | — |
| Expiry date | Mar 19, 2032 |
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.