Cisco Network Convergence System 4009 - Modular Expansion Base - Front To Back Airflow - 15U - Rack-mountable - NCS4009-SA-DC=

• OTN functions
  The NCS 4000 series supports ODU-0 to ODU-4 multilayer switching and grooming, including nested OTN switching. ODU-Flex hitless resizing is supported as well. OTN configuration, provisioning, and protection are managed by a Generalized MPLS-based OTN control plane supporting an embedded User-Network Interface (UNI) as the communication interface between control planes managing different transport layers within the same system. The control-plane instance runs inside the optical domain (overlay network scenario), providing an external UNI to client nodes for invocation of on-demand services.
• Protection mechanisms
  The Cisco NCS 4000 series platform provides a variety of different protection mechanisms operating at different layers. Although pure Layer 3, Layer 2, Layer 1, and Layer 0 protection mechanisms are defined, a holistic approach to protection is critical when multiple layers are operating simultaneously.
• Management solution
  The NCS 4000 series solution integrates an advanced craft interface, which can install, configure, monitor, and troubleshoot NCS 4000 series' applications both at the node and network levels.

The Cisco Network Convergence System 4000 (NCS 4000) series is a converged optical service platform providing dense wavelength-division multiplexing (DWDM), Optical Transport Network (OTN), Multiprotocol Label Switching Transport Profile (MPLS-TP), Carrier Ethernet, and label switch router or IP multiservice capabilities. It delivers massive scale through an advanced silicon and system design, while offering dramatic network efficiency and simplification led by high usability, automation, service management, turn-up, and monitoring.