Single and double tagging schemes for packet processing in a network device
US7974284B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2004 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | Mar 28, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/74591
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of handling datagrams in a network device is disclosed. The method includes the steps of receiving an incoming datagram at a port of the network device, determining a type for the incoming datagram based on fields in the incoming datagram and a destination address, adding a tag to the datagram to assist in routing the datagram, obtaining a multiprotocol label switching (MPLS) label when the datagram is a MPLS datagram, processing the datagram based on the MPLS label and the destination address and discarding or forwarding the datagram based upon the processing step. The tag is stripped from the datagram before it is sent from an egress port of the network switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.