CoreDirector® is a multiservice, multi-protocol switching system that consolidates the functionality of an MSPP, DCS, Ethernet and OTN switch, into a single, high-capacity intelligent switching system. As part of Ciena’s FlexSelect Architecture, CoreDirector supports both TDM and Ethernet services, facilitating service provider migration to a converged next-generation network.
Providing high-function, Layer 1 and Layer 2 switching capabilities, CoreDirector is optimized for the aggregation and forwarding of multiple services, including Ethernet/TDM Private Line, Triple Play and IP services. CoreDirector gives service providers the ability to minimize their network capital costs significantly through reductions in equipment, space, power, spares, etc., while also cutting operational costs via process automation and network simplification.
Intelligent Optical Mesh Networking
At the heart of each CoreDirector system is intelligent embedded software that allows service providers to deploy an optical mesh network based on distributed intelligence. The CoreDirector intelligent network is designed to:
- Automate service provider provisioning, inventory and operations processes
- Provide the highest availability to TDM and Ethernet services
- Enable class of service differentiation
- Simplify operations and reduce capacity requirements
- Seamlessly integrate into a service provider’s operations environment
Each CoreDirector in the network has its own database containing data on other CoreDirectors and the resources in the network. CoreDirector utilizes standards-based signaling and routing protocols to support control plane intelligence for providing real-time resource inventory discovery and database synchronization, intelligent mapping of service requests to network resources and fully automated, end-to-end activation and deactivation of end-user services. Each CoreDirector database is updated automatically when there is a change in the network (e.g. new node added). The control plane intelligence is also used to support CoreDirector FastMesh® restoration. FastMesh provides the ability to utilize any available network capacity to reroute services around multiple network failures. FastMesh can be combined with SONET/SDH line and path protection schemes to provide even higher levels of service availability.
Ethernet Services and Network Convergence
CoreDirector’s integrated data solutions and its industry-leading intelligence and reliability offer service providers a cost-effective, robust solution that facilitates a single data network convergence, while being able to generate new revenues with differentiated data service offerings. CoreDirector supports a suite of data-aware solutions that support lower-cost Gigabit Ethernet (GbE) and 10GbE hand-offs to IP/MPLS networks. These integrated data solutions efficiently transport Ethernet services over highly-reliable SONET/SDH infrastructure, utilizing Generic Framing Procedure (GFP), Virtual Concatenation (VCAT) and Link Capacity Adjustment Scheme (LCAS), and provide options for both Layer 1 and Layer 2 switching and aggregation.
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