Scalable hardware architectures are required for optical burst switched (OBS) where future fibers may be handling 4Tbps or more. Issues investigated include centralized vs. distributed architectures, scaling issues related to performance, and the hardware impact of Just-in-Time (JIT) vs. Just-Enough-Time (JET) signaling.

We describe an intra-and inter-domain routing architecture for Just-In-Time (JIT) optical burst switched (OBS) networks. The architecture addresses the problem of routing optical signals of varying types across an all-optical burst-switched backbone network while maintaining the optical signal quality required by each application. The architecture distinguishes between routing for bursts and ancillary signaling messages ("data plane routing"), and routing for other management and control messages ("control plane routing"). A An n I In nt tr ra a-a an nd d I In nt te er r--D Do om ma ai in n R Ro ou ut ti in ng g A Ar rc ch hi it te ec ct tu ur re e f fo or r O Op pt ti ic ca al l B Bu ur rs st t S Sw wi it tc ch he ed d ( (O OB BS S) ) N Ne et tw wo or rk ks s

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