DiffServ和MPLS相结合的流量工程机制

Traffic Engineering of MPLS Combining with DiffServ

MPLS TE对传统的流量工程进行扩展,实现端到端的QoS保证,但是以流量中继为服务粒度,对流量缺乏区分服务的能力。DiffServ模型提供了区分服务,但是缺乏端到端的QoS有效路由策略。通过将MPLS TE的有效路由策略和DiffServ的区分服务相结合,引入区分服务感知的流量工程,运用带宽约束模型,在网络中实现端到端区分服务的QoS保证。

MPLS TE extends the traditional traffic engineering for achieving the end-to-end QoS guarantee. But basing the service granularity on the flow relay, it lacks the differentiated services. DiffServ provides the differentiated services, but it lacks the effective routing strategy of end- to-end QoS. By combining the effective end-to-end routing strategy of MPLS TE with the differentiated Services of DiffServ, introduces the DiffServ-aware traffic engineering, employing the bandwidth constraints model, achieves QoS guarantee of end-to-end and differentiated services for the networks.