Termination of a pseudowires on multiple line cards
US8848716B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2011 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Nov 19, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/68
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment, line cards of packet switching or other network devices are configured for terminating pseudowires. Typically, this includes multiple line cards being configured for terminating a same pseudowire, which allows the corresponding pseudowire traffic to be received by any one of these multiple line cards. Each of these pseudowire-terminating line cards is typically configured to apply one or more features to a pseudowire packet. Examples of these features include, but are not limited to: Access Control List, Quality of Service, Netflow, and Lawful Intercept. For a received packet to be sent out one of these pseudowires, a two-stage lookup operation can be used to first identify the pseudowire over which to forward the packet; and a second lookup operation based on the pseudowire to identify forwarding information corresponding to a path through a network over which a corresponding pseudowire is configured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.