A novel switching architecture of multi-granularity optical cross-connects (MG-OXCs) is proposed, which cooperate with the generalized multi-protocol label switching (GMPLS) control plane. We study the performance using both analysis and simulations. The result demonstrates a significant cost reduction that could be achieved for a moderately small reduction of throughput.
In this paper, according to the ITU-T recommendation G.8080, we present a novel architecture of RC based on the extended GMPLS, which consists of interface component, OSPF-TE component, route computation component and routing information database. The RC is emulated in the ASON simulation software developed by us, where the OSPF is extended as the routing protocol and GMPLS RSVP-TE is adopted as signalling protocol. In the simulation, the RWA scheme, the fixed shortest path routing way and first fit wavelength algorithm, is used. The simulation results of RC have been presented in terms of flooding time (FT), flooding overhead (FO) and route computing time. The FT and FO just have a very little change under different traffic load, which indicates that re-flooding is rare and the RC works efficiently.