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This paper focused on the delay inherent to various lightpath activation schemes using the novel [4] OTN-DCN model with dissimilar data and control latencies. Two existing schemes were discussed and two variants of a new scheme were proposed. The four schemes were compared through experiments based on the time-to-restore metric. Initial results from the experiments confirm that the proposed schemes offer lower setup delays thus minimizing packet loss during restoration. The proposed schemes also exhibit resilient scaling behavior benefiting from the natural structure of DCN internetworks.

Swapnil Bhatia 2002-08-02