In this paper,the technical evolution of network Traffic Engineering(TE) is reviewed at first. Then,the fo-cus is placed on analyzing and discussing several key techniques in MPLS TE. It is finally pointed out that th...In this paper,the technical evolution of network Traffic Engineering(TE) is reviewed at first. Then,the fo-cus is placed on analyzing and discussing several key techniques in MPLS TE. It is finally pointed out that there aresome unsolved problems in the implementation of MPLS TE yet.展开更多
为了能在有严格带宽要求和有弹性带宽要求两种业务共存的MPLS(multi-protocol label switching)网络中提供动态负载均衡,提出了一种基于负载平衡算法——TeXCP(traffic engineering with explicit congestion control protocol)的QoS路...为了能在有严格带宽要求和有弹性带宽要求两种业务共存的MPLS(multi-protocol label switching)网络中提供动态负载均衡,提出了一种基于负载平衡算法——TeXCP(traffic engineering with explicit congestion control protocol)的QoS路由算法.该算法利用TeXCP的自动调节和平衡负载的能力将best effort业务调整到适当的路径上以满足高优先级QoS业务请求的带宽,同时避免了传统的快速重路由方法可能导致的网络拥塞问题.仿真结果表明,新算法能够集成两类业务需求,通过平衡瓶颈链路的利用率减小了网络的拥塞,在保证QoS业务带宽要求的同时,提高了网络的吞吐量.展开更多
针对高连通度数据中心网络存在吞吐量低、网络负载均衡差等流量工程问题,该文提出一种基于OpenFlow的多路径传输(OpenFlow based Multipath Transmission,OFMT)机制。借助OpenFlow集中控制的优势,OFMT为每条流精确计算传输路径,将网络...针对高连通度数据中心网络存在吞吐量低、网络负载均衡差等流量工程问题,该文提出一种基于OpenFlow的多路径传输(OpenFlow based Multipath Transmission,OFMT)机制。借助OpenFlow集中控制的优势,OFMT为每条流精确计算传输路径,将网络中的流量优化分配到端到端的多条路径上,并通过周期性轮询和动态调度实现良好的负载均衡,进而提高数据中心网络吞吐量。实验结果表明,在相同的网络流量负载下,OFMT与较典型数据中心传输协议相比,有效提高了网络的吞吐量,并降低了流完成时间。展开更多
文摘In this paper,the technical evolution of network Traffic Engineering(TE) is reviewed at first. Then,the fo-cus is placed on analyzing and discussing several key techniques in MPLS TE. It is finally pointed out that there aresome unsolved problems in the implementation of MPLS TE yet.
文摘为了能在有严格带宽要求和有弹性带宽要求两种业务共存的MPLS(multi-protocol label switching)网络中提供动态负载均衡,提出了一种基于负载平衡算法——TeXCP(traffic engineering with explicit congestion control protocol)的QoS路由算法.该算法利用TeXCP的自动调节和平衡负载的能力将best effort业务调整到适当的路径上以满足高优先级QoS业务请求的带宽,同时避免了传统的快速重路由方法可能导致的网络拥塞问题.仿真结果表明,新算法能够集成两类业务需求,通过平衡瓶颈链路的利用率减小了网络的拥塞,在保证QoS业务带宽要求的同时,提高了网络的吞吐量.
文摘针对高连通度数据中心网络存在吞吐量低、网络负载均衡差等流量工程问题,该文提出一种基于OpenFlow的多路径传输(OpenFlow based Multipath Transmission,OFMT)机制。借助OpenFlow集中控制的优势,OFMT为每条流精确计算传输路径,将网络中的流量优化分配到端到端的多条路径上,并通过周期性轮询和动态调度实现良好的负载均衡,进而提高数据中心网络吞吐量。实验结果表明,在相同的网络流量负载下,OFMT与较典型数据中心传输协议相比,有效提高了网络的吞吐量,并降低了流完成时间。
