QoS online routing and MPLS multilevel protection: A survey

被引：46
作者：
Marzo, JL [1 ]
Calle, E
Scoglio, C
Anjali, T
机构：
[1] Univ Girona, Girona, Spain
[2] Georgia Inst Technol, Coll Comp, Atlanta, GA 30332 USA
[3] Dept Comp, Girona, Spain
[4] Dept Educ, Girona, Spain
来源：
IEEE COMMUNICATIONS MAGAZINE | 2003年 / 41卷 / 10期
基金：
美国国家航空航天局;
关键词：
D O I：
10.1109/MCOM.2003.1235604
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A survey of MPLS protection methods and their utilization in combination with online routing methods is presented in this article. Usually, fault management methods pre-establish backup paths to recover traffic after a failure. In addition, MPLS allows the creation of different backup types, and hence MPLS is a suitable method to support traffic-engineered networks. In this article, an introduction of several label switch path backup types and their pros and cons are pointed out. The creation of an LSP involves a routing phase, which should include QoS aspects. In a similar way, to achieve a reliable network the LSP backups must also be routed by a QoS routing method. When LSP creation requests arrive one by one (a dynamic network scenario), online routing methods are applied. The relationship between MPLS fault management and QoS online routing methods is unavoidable, in particular during the creation of LSP backups. Both aspects are discussed in this article. Several ideas on how these actual technologies could be applied together are presented and compared.
引用
收藏
页码：126 / 132
页数：7
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