Traffic engineering and routing in survivable multi-service networks

被引:0
|
作者
Pasias, V [1 ]
Karras, D [1 ]
Papademetriou, RC [1 ]
机构
[1] Univ Portsmouth, Dept Elect & Comp Engn, Portsmouth, Hants, England
关键词
traffic engineering (TE); quality of service (QoS); routing; traffic trunk; best-effort (BE); protection; restoration; Integer Linear Programming (ILP);
D O I
暂无
中图分类号
TN [电子技术、通信技术];
学科分类号
0809 ;
摘要
This paper presents a new framework for Traffic Engineering (TE) of primary and backup paths and routing of Quality of Service (QoS) and Best-Effort (BE) flows in multi-service backbone networks capable of surviving against single or multiple node and/or link failure(s). The aforementioned framework involves an off-line and an on-line phase. In the off-line phase either a method based on an Integer Linear Programming (ILP) TE problem or a method based on a heuristic TE algorithm provides the primary and the backup routes (where required) for the QoS-guaranteed flows and the routes for the BE flows. In the on-line phase the QoS and BE flows are routed based on the outputs of the off-line phase. In the case that one or more primary paths fail the corresponding backup paths are used for restoration. However, if one or more backup paths also fail or a backup path is not defined dynamic restoration is applied. Test results regarding the two off-line TE methods are presented.
引用
收藏
页码:48 / 51
页数:4
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