Quality of service (QoS)-aware forwarding in an MPLS network with tactical traffic engineering
US8000327B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2006 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | Aug 26, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/306
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A router comprises an interface for receiving packets, wherein the packets include Multiprotocol Label Switching (MPLS) labels having the same label value that corresponds to an MPLS label switched path (LSP), and wherein each of the MPLS packets includes MPLS experimental (EXP) bits defined to identify a class of service to which the respective packet belongs. The router is a transit router along the MPLS LSP, and further includes a control unit that, for each of the packets, accesses forwarding information to determine whether to forward the packet along the LSP or to redirect the packet along a second LSP based on the classes of service specified in the EXP bits. The router receives policies via a user interface, and applies the policies to index into the forwarding information to select a forwarding entry, wherein the index is responsive to the label value in combination with the EXP bits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.