Abstract
oSignicant cost reductions can be achieved through the deployment of alternative homing architectures. These re- ductions, however, come at the expense of increased recovery time. In this paper we focus on the dual homing with shared backup router resources (SBRR) architecture and propose an analytical recovery time model based on GMPLS signaling. Case studies are presented showing recovery times ranging from 100 ms to around 2500 ms. Simultaneously, the dominating time contributing factors are identied, while the impact of varying parameters such as the network edge length is quantied. We proceed to show how service-imposed maximum outage requirements have a direct effect on the conguration of the SBRR architecture.
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