Source identification preservation in multiprotocol label switching networks
US9094337B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2013 |
| Grant date | Jul 28, 2015 |
| Priority date | — |
| Expiry date | Oct 9, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/72
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A Multiprotocol Label Switching (MPLS) method, a MPLS network element, and a MPLS network include receiving a packet destined for a destination node at a source node in an MPLS network; pushing an identifier in an MPLS label on an MPLS label stack associated with the packet, wherein the identifier denotes the source node as the source of the packet and is pushed prior to any other MPLS labels on the MPLS stack; pushing one or more labels on the MPLS stack indicative of a route of the packet to the destination node; and transmitting the packet from the source node into the MPLS network. The identifier is located at the bottom of the MPLS stack thereby being a last item popped in the MPLS stack at the destination node, and the identifier can be used for updating OAM data efficiently without requiring deep packet inspection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.