Non-recirculating label switching packet processing
US10027587B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2016 |
| Grant date | Jul 17, 2018 |
| Priority date | — |
| Expiry date | Sep 22, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/325
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed herein is an apparatus for processing an Internet Protocol (IP) header and label switching (LS) headers of a packet in a pipeline. The apparatus includes an LS header processing circuit configured to select a first operation for the packet using an LS header from the packet, and an IP header processing circuit configured to perform an IP lookup to select a second operation for the packet. The apparatus further includes a tunnel initiation circuit configured to initiate an LS tunnel or IP tunnel. The LS header processing circuit, the IP header processing circuit, and the tunnel initiation circuit are operable to operate sequentially on a same packet and concurrently on different packets in a pipeline. Each of these circuits is operable to be bypassed based on an outermost header in the packet, or the selected one of the first operation or the second operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.