摘要
重路由技术已成为基于MPLS流量工程(MPLS-TE)中调整流量分布的主要手段。本文在分析了IETF制定的准标准快速重路由算法基础上,设计了一种基于MPLS流量工程的新快速重路由算法NEW-FR,并进行了仿真实验,实验结果和分析表明,该算法具有以下优点:消除了重路由时无共享链路节点对之间资源的双份占用情况、缓和了一次性报文流失序问题、大大降低了重路由切换时延和提高了重路由速度等。
Rerouting is the main method to adjust traffic distribution in Internet Traffic Engineering. On the basis of analysis on IETF抯 semi-standard fast reroute algorithm, the paper gives a new fast reroute algorithm NEW-FR on MPLS-based traffic engineering and its simulation. The result shows that NEW-FR has many advantages as follow: removing the case of double shares of resource occupied between a pair of nodes without shared links, reducing disordering of packets at one time and switch over delay for reroute, and quickening the speed of reroute.
出处
《系统仿真学报》
CAS
CSCD
2003年第5期674-677,680,共5页
Journal of System Simulation
关键词
流量工程
快速重路由
MPLS
显式路由
资源预留
traffic engineering
fast reroute
MPLS
explicit route
, resource reservation
