Abstract: This paper proposes an anycast routing algorithm supporting QoS in Multi-Protocol Label Switching(MPLS) networks. It pre-computes anycast path with least hop numbers. This path can fulfill bandwidth constraint by link state routing protocol from the destination node(server) of an anycast datagram to its source node(client). The algorithm reserves bandwidth on LSP using constraint routing-label distribution protocol. Simulation results indicate that the algorithm results about delay and data loss-rate are good, and it banlances the server load to some extent.

Key words: anycast routing, Multi-Protocol Label Switching(MPLS), Quality of Service(QoS), server load

摘要： 提出一种基于MPLS网络且保证QoS的选播路由算法。使用链路状态路由协议，找到一条从发出请求的客户到服务器方向上最小跳数的最优路径，该路径能满足选播服务带宽要求。使用度量为路径逆向(服务器到客户)上的链路带宽值，通过约束路由的标记分发协议，建立一条从服务器到客户方向的标记交换路径，并预留资源。仿真结果表明，在传输服务数据流时，该算法的时延及丢包率性能良好，能在一定程度上平衡服务器的负载。

关键词: 选播路由, 多协议标记交换, 服务质量, 服务器负载

CLC Number: 

• TP393