Metro-Optix Introduces Multi-Layer Bandwidth Manager

Metro-Optix, an optical networking company, has introduced CityStream, a multi-layer bandwidth manager for metropolitan access and inter-office network applications. With multi-network element and multiprotocol capabilities, CityStream replaces the need for SONET add/drop multiplexers, digital cross-connect systems, ATM edge switches, and IP routers. Beginning June 6th, Metro-Optix will demonstrate its multi-layer bandwidth manager at Supercomm 2000 in Atlanta, Georgia in booth #555.

‘With CityStream, we are delivering a system that evolves and adapts to any network protocol, including time division multiplexing (TDM), ATM, IP, or any combination thereof. We have developed an innovative, patent-pending system architecture that is extremely scalable, particularly for IP routing in metro and edge applications. CityStream contains a non-blocking, core switching fabric that scales from 100 Gbps today to 400 Gbps in the future.’ stated Arun Bellary, Chairman and CEO of Metro-Optix.

‘The IP traffic explosion is forcing network architectures to change, but no single technology will win out. Existing services carried over SONET/SDH and ATM will coexist with IP. Applications that enable CLECs and emerging carriers to build flexible networks to dramatically reduce operating expenses and capital expenditures will be of great value to carriers and help solve congestion problems. This is the challenge that Metro-Optix is addressing,’ said Dr. John Ryan, Principal and Chief Analyst at RHK.

The CityStream architecture features a patent-pending, flexible 1:N protection scheme and carrier-class fault isolation. Depending on the bandwidth needs of the application, TDM, ATM and IP switch fabrics can be added and removed incrementally. With up to twenty-four OC-48 line interfaces and 288 multi-protocol DS-3 signals per 7-foot rack, CityStream scales to industry-leading densities in a single, compact platform. To achieve these unprecedented densities, the company has developed custom ASICs that are integrated into the core switching fabric, protocol switch fabrics, and interface modules.

As a single network element optimized for demanding metropolitan applications, CityStream improves bandwidth efficiency while delivering data and Internet services. As such, the CityStream platform can be utilized for many different metro applications including, but not limited to, ring aggregation, mesh topology, point-of-presence bandwidth management, service access multiplexing, DSLAM aggregation, ATM edge switching, and IP routing.

For investment protection, CityStream’s physical interfaces are independent of the protocol carried over them. Without changing an interface module, a pure SONET/SDH network can migrate to an ATM and IP network. Each interface port supports channelized and unchannelized leased line, ATM, and IP services natively. CityStream supports interface rates from DS1 to OC-192 including xDSL, Ethernet, and DWDM. The requirements of global service providers are met by CityStream’s design for both ANSI and ETSI requirements. When SONET and SDH are required within the same location, CityStream performs as a SONET/SDH gateway.

The Metro-Optix product family consists of the CityStream network element with an integral Java-based graphical user interface and its client/server-based element manager. Typical industry standard interfaces like TL-1, SNMP, and a command line interface for easy interworking with other element and network management systems are supported. The element management system interfaces to network management systems or client workstations through industry standard interfaces, such as CORBA, for control of operation, administration, maintenance, and provisioning of complete sub-networks of CityStream elements. CityStream is scheduled for customer trials in August.

The company can be found at www.