| IP/MPLSoverWDM网中基于共享风险链路组限制的共享通路保护算法 |
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| 引用本文： | 何荣希,张治中,李乐民,王晟.IP/MPLSoverWDM网中基于共享风险链路组限制的共享通路保护算法[J].电子学报,2002,30(11):1638-1642. |
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| 作者姓名： | 何荣希 张治中 李乐民 王晟 |
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| 作者单位： | 电子科技大学宽带光纤传输与通信系统技术国家重点实验室,四川成都 610054 |
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| 基金项目： | 国家自然科学基金 (No 69990 540 ,60 0 0 2 0 0 4 ) |
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| 摘 要： | 本文研究了IP/MPLS over WDM网中,如何建立两条共享风险链路组(SRLG)分离的标记交换路径(LSP)问题,提出一种新的基于SRLG分离的共享通路保护算法.该算法既可以保证用户业务的可靠性要求,同时又能够有效提高全网的资源利用率,从而大大降低全网LSP建立请求的阻塞率.本文还对所提算法进行了仿真研究,并给出了仿真结果.
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| 关 键 词： | 通用多协议标签交换 共享风险链路组 共享通路保护 动态选路和波长分配 |
| 文章编号： | 0372-2112(2002)11-1638-05 |
| 收稿时间： | 2001-12-12 |
A Shared Path-Protection Algorithm in IP/MPLS over WDM Networks Under Shared-Risk-Link-Groups Constraints |
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| HE Rong-xi,ZHANG Zhi zhong,LI Le min,WANG Sheng.A Shared Path-Protection Algorithm in IP/MPLS over WDM Networks Under Shared-Risk-Link-Groups Constraints[J].Acta Electronica Sinica,2002,30(11):1638-1642. |
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| Authors: | HE Rong-xi ZHANG Zhi zhong LI Le min WANG Sheng |
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| Affiliation: | National Key Lab of Broadband Optical Fiber Transmission and Communication Networks,UESTC,Chengdu,Sichuan 610054,China |
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| Abstract: | Different Shared Risk Link Groups(SRLG)identifiers can be assigned to each link by network administrator in optical Traffic Engineering(TE)with GMPLS to satisfy connection's reliability requirement.A dependable connection can be achieved by establishing two SRLG disjoint paths.A new routing algorithm for shared path protection based on SRLG disjoint is presented in this paper.It provides the same level of protection against single SRLG failure as dedicated path protection scheme.Moreover it is superior to dedicated path protection scheme in network utilization.Network performance, based on dynamic traffic with different load,is investigated via simulations.The results show that the scheme can improve the performance of the network significantly. |
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| Keywords: | generalized multi protocol label switching (GMPLS) shared risk link groups (SRLG) shared path protection dynamic routing and wavelength assignment(RWA) |
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