Routing and Regenerator Planning in a Carrier's Core Reconfigurable Optical Network

A network planning system comprising:

• a processor;
• and
• a memory comprising instructions that, when executed by the processor, cause the processor to perform operations comprising
• determining a set of regenerator sites in a multi-layer network,
• determining a set of candidate regenerator sites,
• selecting, from the set of candidate regenerator sites, a best regenerator site, and
• moving the best regenerator site from the set of candidate regenerator sites into the set of regenerator sites.

A computer-readable storage medium comprising computer-executable instructions that, when executed by a processor, cause the processor to perform operations comprising:

• determining a set of regenerator sites in a multi-layer network;
• determining a set of candidate regenerator sites;
• selecting, from the set of candidate regenerator sites, a best regenerator site;
• and
• moving the best regenerator site from the set of candidate regenerator sites into the set of regenerator sites.