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Lightpath Completes DWDM Transformation
April 20, 2004
By OpticallyNetworked Staff

Lightpath, a network service provider and the business telecommunications services division of Cablevision Systems Corp., Monday announced the completion of its core network transformation from SONET to a dense wavelength division multiplexing (DWDM) architecture.

This new network infrastructure is designed to enable Lightpath to offer more scalable and cost-effective next-generation IP-based and broadband services to businesses in New York City, Long Island, Westchester County (N.Y.), southern Connecticut and northern New Jersey.

Lightpath reports that due to customer demand, network service providers are looking for ways to gain more capacity from their existing optical transport networks by moving to next generation network technologies.

Lightpath said in a statement that its evolution from SONET to DWDM will enable it to migrate to a 10 Gbps enabled core network. This added network capacity supports Lightpath's strategy to offer and deliver advanced data and IP-based services to its customers through such products as Metro Ethernet, managed services and other next generation broadband and IP-based services.

"This new DWDM infrastructure will allow Lightpath to capitalize on our network investments by getting greater bandwidth scalability out of the vast amount of fiber we have deployed throughout the New York Metropolitan area," said Brian Fabiano, senior vice president of network services, Lightpath. "The completion of this phase of our network evolution will provide more density to support our enhanced service offerings and initially increase our bandwidth to accommodate 32 times more traffic than before, and quickly increase it to 128 times when we are ready."

The second phase of the upgrade, which the company says is already underway, will be the deployment of a Multi-Protocol Label Switching (MPLS) overlay on the DWDM core. The result, the company says, will be a converged, ubiquitous IP network deployed over a high-density optical core.

The focus of this effort is on the company's regional distribution rings, where Lightpath reports it is planning to use a blend of next generation SONET, Resilient Packet Routing (RPR) over SONET, and coarse wave division multiplexing (CWDM). 10 Gbps SONET and CWDM technology will allow the company to deliver higher bandwidth services, such as Gigabit Ethernet and Storage Area Networking (SAN).

"We will be able to offer integrated voice, video and data services on a single platform, and Metro Ethernet services that can quickly scale as our customers' requirements change," Joseph Lhota, president, Lightpath said.

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