Distributed inter-domain lightpath provisioning in the presence of wavelength conversion

被引:7
作者
Liu, Q. [1 ]
Ghani, N. [1 ]
Rao, N. S. V. [2 ]
Gumaste, A. [3 ]
Garcia, M. L. [4 ]
机构
[1] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87131 USA
[2] Oak Ridge Natl Lab, Div Math & Comp Sci, Oak Ridge, TN 37831 USA
[3] Indian Inst Technol, Sch Informat Technol, Bombay, Maharashtra, India
[4] Tennessee Technol Univ, ECE Univ, Chattanooga, TN 37404 USA
基金
美国国家科学基金会;
关键词
multi-domain networks; optical networks; GMPLS; inter-domain DWDM routing; topology abstraction; wavelength conversion;
D O I
10.1016/j.comcom.2007.07.006
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 [计算机科学与技术];
摘要
Dense wavelength division multiplexing (DWDM) has become the dominant transport layer technology for next-generation backbone networks due to its unprecedented capacity scalability. As a result, there is a pressing need to investigate lightpath provisioning in multidomain DWDM networks. Although inter-domain provisioning has been well-studied for packet/cell-switching networks, the wavelength dimension (along with wavelength conversion) presents many added challenges. To address these concerns, a detailed GMPLS-based hierarchical routing framework for provisioning transparent/translucent/opaque multi-domain DWDM networks is presented. The scheme adapts topology abstraction to hide internal domain state so as to resolve routing scalability and security issues. Specifically a novel full-mesh topology abstraction scheme is developed for full wavelength conversion domains, i.e., to disseminate additional wavelength converter state. Related inter-domain lightpath RWA and signaling schemes are also tabled. Performance analysis results are then presented to demonstrate the effectiveness of the proposed mechanisms along with directions for future research work. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:3662 / 3675
页数:14
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