Description
Cisco 15454-40-WXC-C 40-Channel Reconfigurable Optical Add/Drop Multiplexing
Product Overview
Release 8.0 expands Cisco ONS 15454 MSTP transport capacity in C band to 40 channels (100-GHz spacing) and to 80 channels (50-GHz spacing). In parallel with the existing 32-channel Reconfigurable Optical Add/Drop Multiplexing (ROADM) solutions, a new set of units is introduced in this release to enhance reconfigurability options for the MSTP platform, allowing multidegree reconfigurability as well. By making use of the Release 8.0 MSTP features and configuration flexibility, a Cisco DWDM network can scale to 112 channels of composite DWDM traffic, using both the C band and the L band spectrum.
The new 40-channel Wavelength Cross-Connect (40-WXC) card and the software functionalities extended from previous releases provide multidegree switching capabilities at the individual wavelength level. Mesh and multiring network topologies can now be deployed using Cisco ONS 15454 MSTP platform with complete flexibility of service routing at all nodes in the network. While Wavelength Selective Switch (WSS) units provide degree-2 type reconfigurability (drop wavelength in a node vs. let it pass through the node), an ROADM node based on 40-WXC units can support up to degree-8 reconfigurability. This means that for each wavelength it is possible to decide if it has to be locally dropped or routed to any of the other 7 pass-through directions of the node. Such a capability not only enhances the flexibility of the DWDM transport network but also dramatically reduces the need for costly transponders to perform optical-to-electrical-to-optical conversion (typically 2 transponders/crossponders per add/drop channel or wavelength). This capability allows carriers to more cost-effectively (from both a CapEx and OpEx perspective) build secure and efficient transport networks that can scale with their growing bandwidth and interconnect needs. The Cisco approach to DWDM gives carriers the freedom to reevaluate and alter their wavelength forecasts as service demands grow and business concentrations emerge-without suffering the heavy price typically associated with redesigning and mapping DWDM networks.
