Title :
An Analytical Model and A Fast Mechanism for Fault Restoration in IP over WDM Networks Based on n:m Scheme
Author :
Xiansi, Tan ; Liang, Ou ; Wenqing, Cheng
Author_Institution :
Dept. of Radar Syst. & Eng., Air Force of Radar Acad., Wuhan
Abstract :
The fault restoration technique based on n:m scheme can improve system availability with small cost increases for WDM networks, where it is possible that n faults occur synchronously in a protection domain or a protection entity, but it has rarely been implemented or standardized. In this paper, an analytical model for mean restoration time of restoration mechanism based on n:m scheme is developed. As a general model, it aims at the WDM networks with the restoration paths created in advance of fault occurrence without wavelength reserved. In particular, the proposed protocol for processing faults has been improved to make the restoration based on n:m scheme as fast as that based on 1:1 or n:1 scheme
Keywords :
IP networks; fault diagnosis; optical fibre networks; protocols; telecommunication network reliability; wavelength division multiplexing; 1:1 scheme; IP over WDM networks; analytical model; fast mechanism; fault occurrence; fault restoration technique; mean restoration time; n:1 scheme; n:m scheme; protection entity; system availability; Analytical models; Costs; Intelligent networks; Optical fiber networks; Protection; Protocols; Radar; Systems engineering and theory; WDM networks; Wavelength division multiplexing;
Conference_Titel :
Local Computer Networks, 2005. 30th Anniversary. The IEEE Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7695-2421-4
DOI :
10.1109/LCN.2005.26
