کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
851882 | 909343 | 2010 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A new protection algorithm with consideration of lightpath load in fault-tolerant GMPLS optical networks A new protection algorithm with consideration of lightpath load in fault-tolerant GMPLS optical networks](/preview/png/851882.png)
In this paper, we study the survivability in GMPLS optical networks and propose a new algorithm called Protection based on Lightpath Load (PLL) to tolerate the single-fiber link failure. Based on the parameter, Boundary of Heavy-load Lightpath (BHL), PLL can effectively choose the protection execution whether on optical layer or on IP/MPLS layer, such that the bandwidth utilization and recovery complexity can be compromised. In PLL, if the number of Working Label Switching Path (WLSPs) carried on a Working Lightpath (WLP) exceeds the value of BHL, this WLP will be protected in optical layer; otherwise, these WLSPs carried on this WLP will be protected on IP/MPLS layer. Simulation results show that, compared to conventional protection algorithm, PLL not only can significantly reduce the recovery complexity but also can obtain satisfactory trade-off performance.
Journal: Optik - International Journal for Light and Electron Optics - Volume 121, Issue 21, November 2010, Pages 1919–1924