New services such as Ethernet and storage area networks (SANs) could not efficiently be delivered over existing SONET/SDH networks despite the proven value of, and considerable investment in this infrastructure. However, the maturity of three new technologies - Generic Framing Procedure (GFP), Virtual Concatenation (VCAT), and Link Capacity Adjustment Scheme (LCAS) - can transform this infrastructure to make it both an efficient and flexible transport network to meet the demand for Layer 2 and Layer 3 services. This white paper offers an overview of the benefits these three stable and mature technologies bring to SONET/SDH networks, thereby allowing service providers to extract greater value from their networks.
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