中国邮电高校学报(英文)

中国邮电高校学报(英文) ›› 2007, Vol. 14 ›› Issue (3): 70-73.doi: 1005-8885 (2007) 03-0070-04

• Network • 上一篇    下一篇

Novel disjoint path selection scheme based on link availability in ASON

王先庆;陆月明;纪越峰   

  1. Key Laboratory of Optical Communication and Lightwave Technologies, Ministry of Education，Beijing University of Posts and Telecommunications, Beijing 100876, China
  • 收稿日期:2006-10-11 修回日期:1900-01-01 出版日期:2007-09-30

Novel disjoint path selection scheme based on link availability in ASON

WANG Xian-qing; LU Yue-ming; JI Yue-feng   

  1. Key Laboratory of Optical Communication and Lightwave Technologies, Ministry of Education，Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2006-10-11 Revised:1900-01-01 Online:2007-09-30

PDF

359

被引次数

12

摘要：

Risk-disjoint routing is an efficient way to improve network survivability. In this article, a partial risk-disjoint routing algorithm based on link availability (PRDRA-LA) is proposed based on the complete risk-disjoint routing algorithm (CRDRA). While calculating the protection path with PRDRA-LA, the links that share risks with the links in the working path are filtered by link availability. In addition, the risk disjoint degree between the protection path and the working path can be adjusted freely. Simulation results showed that when compared with CRDRA, routing connections with PRDRA-LA can achieve improved survivability while the number of connections that can be successfully routed over the current network is kept from serious decline.

关键词:

automatically switched optical network; risk- sharing links; partial risk-disjoint routing algorithm based on link availability; risk-disjoint degree

Abstract:

Risk-disjoint routing is an efficient way to improve network survivability. In this article, a partial risk-disjoint routing algorithm based on link availability (PRDRA-LA) is proposed based on the complete risk-disjoint routing algorithm (CRDRA). While calculating the protection path with PRDRA-LA, the links that share risks with the links in the working path are filtered by link availability. In addition, the risk disjoint degree between the protection path and the working path can be adjusted freely. Simulation results showed that when compared with CRDRA, routing connections with PRDRA-LA can achieve improved survivability while the number of connections that can be successfully routed over the current network is kept from serious decline.

Key words:

automatically switched optical network; risk- sharing links; partial risk-disjoint routing algorithm based on link availability; risk-disjoint degree

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