Abstract:

TCP (transfer control protocol) performance in OBS （optical burst switching） network was studied, and the performance degradation of TCP tahoe, reno, new reno and sack in the OBS network was discussed. Considering the ACKs' (acknowledgement) losses, a simple analytic model was investigated to give the steady state TCP throughput over the OBS network. The simulated result demonstrates that the model can accurately predict TCP throughput over a wide range of loss probabilities. The impact of ACKs' losses was analyzed based on the calculation results. Besides, ACKs were suggested to be treated as a kind of high QoS data in OBS network.

Key words: optical burst switching, transfer control protocol, performance degradation, throughput model