Benefits of multi-layer switch architectures

Multi-layer switch (MLS) architectures take advantage of recent advances in transport systems, optical switching, electrical. switching, and routing algorithms to significantly reduce the cost of next generation networks. Although each is valuable as a stand-alone technology, combined they provide a number of additional benefits that can only be achieved when fully integrated. This includes elimination of back-to-back infra-office interfaces, optical to electrical conversions at by-pass nodes, and signal regenerators along the routes. Along with the reduced equipment count comes savings in floor space, power, sparing, network management, fibre congestion, and operational costs. Advanced signalling and routing protocols are required as well to fully utilize the increase in connectivity options. Consequently, all four emerging technologies must be employed together to fully realize the promise of true optical networking and leverage the value each brings.