Traffic performance evaluation of optical label switching nodes with optical layer multicast

All-optical label switching (AOLS) is a promising approach of implementing label switching for packet routing and forwarding in the optical layer at high speeds close to fiber line-rates. In this paper, AOLS node architectures with unicast and two multicast approaches are presented. The multicast approaches are referred to as feedback and feed-forward multicast, respectively. We compare these node architectures and evaluate their traffic performance in both unicast and multicast cases with different contention resolution schemes. Simulation results on AOLS nodes of the same dimension are analyzed in terms of packet loss ratio and network throughput.

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