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2006

Multiple link failures survivability of optical networks with traffic grooming capability

8 years 10 months ago
Multiple link failures survivability of optical networks with traffic grooming capability
This paper investigates the problem of survivable traffic grooming (STG) in shared mesh optical networks and proposes different frameworks for improving the survivability of low speed demands against multiple near simultaneous failures. Spare capacity reprovisioning has recently been considered for improving the overall network restorability in the event of dual failures; here, after the recovery form the first failure, some connections in the network may become unprotected and exposed to new failures. Capacity reprovisioning then allocates protection resources to unprotected and vulnerable connections so that the network can withstand a future failure. In this paper, we propose two different reprovisioning schemes (lightpath level reprovisioning, LLR, and connection level reprovisioning, CLR); they differ in the granularity at which protection resources are reprovisioned. Further, each of these schemes is suitable for a different survivable grooming policy. While LLR provides collect...
Chadi Assi, Wei Huo, Abdallah Shami
Added 11 Dec 2010
Updated 11 Dec 2010
Type Journal
Year 2006
Where COMCOM
Authors Chadi Assi, Wei Huo, Abdallah Shami
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