GMPLS Control Plane With Distributed Multipath RMSA for Elastic Optical Networks


Elastic optical networking (EON) has the constraint that every one flows must have contiguous allotted frequency slots across all fiber links end-to-finish, hence, the routing, modulation and spectrum assignment (RMSA) is one of the foremost important concerns in EON. This paper proposes and demonstrates a style of a generalized multiprotocol label switching (GMPLS) control plane for EON with distributed RMSA. The proposed approach uses an extended RSVP-TE to seek out multipath by broadcasting PATH message, using tentative reservation to avoid putting in place multipath for one request. The proposed methodology additionally overcomes challenges faced by the previously pursued GMPLS-EON methods that relied on dynamic OSPF-TE where control plane overhead and the collision among lightpath requests caused by signaling latency. Simulation results based mostly on the proposed GMPLS-EON technique on totally different network scenarios reveal that our proposed design reduces the blocking likelihood by 4.56 and 3.86 compared with the standard GMPLS and GMPLS/PCE approaches, respectively, in the NSF topology at the network offered load of 60 Erlang. It conjointly reduces signaling time by a factor of one.eighty four compared with conventional GMPLS/PCE approach in the same network condition.

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