This paper presents and compares different TE information dissemination strategies between Path Computation
Elements (PCEs) in multi-domain optical networks. In such network context, recent studies have found that path
computation only with local domain visibility yields poor network performance. Accordingly, certain visibility
between domains seems necessary. Aiming to fit the confidentiality requirements of the composing domains
while improving the final network blocking probability, novel link aggregation techniques have been proposed,
which summarize the state of network domains resources efficiently. This aggregated link information is
afterwards disseminated to all the remainder domains in the network. To this end, we introduce different update
triggering policies to make a good trade-off between routing information scalability and inaccuracy.
The performance of all contributions has been supported by illustrative simulation results.
CitacióSpadaro, S. [et al.]. Analysis of traffic engineering information dissemination strategies in PCE-based multi-domain optical networks. A: International Conference on Transparent Optical Networks (ICTON). "International Conference on Transparent Optical Networks (ICTON) 2010". Munich: IEEE Computer Society Publications, 2010, p. 1-4.