Based on the DiffServ policy of WFQ with priority queuing and load balancing,a new routing metric DCB and an optimal QoS algorithm DCBR are proposed.

• 在区分服务体系中优先级队列WFQ的节点调度策略约束下,兼顾负载均衡需求,提出了QoS路由度量标准DCB以及路由算法DCBR。