A METHOD AND SYSTEM FOR IMPLEMENTING MPLS NETWORK DIFFSERV TRAFFIC ENGINEERING

摘要

A method for implementing MPLS network DS-TE includes: carrying service quality parameters related to the resource allocation in path message when setting up LSP; reserving bandwidth resources for traffic flows according to the service quality parameters; forwarding the traffic flows using the reserved resources after the LSP being set up. A system for implementing MPLS network DS-TE is also disclosed, including: ingress LSR, core LSR and egress LSR; the ingress LSR or core LSR carries service quality parameters related to resource allocation in the path message for setting up LSP; the core LSR reserves bandwidth resources for traffic flows according to said service quality parameters, and forwards the traffic flow using the reserved bandwidth when receiving the traffic flows after the LSP is set up. LSR is also disclosed. Bandwidth resources are allocated according to different traffic types and the granularity of the DiffServ Traffic Engineering is further specified by using the method, system and LSR.