When deploying local area networks (LANs), most enterprises juggle three, often conicting, requirements. Budgetary constraints dictate the need to control both initial and long-term networking costs. Yet businesses also want to install the latest technology — in terms of network speed, functionality and security — in a way that enables the cost-effective evolution of networks in step with inevitable advances in technology. Finally, environmentally conscientious enterprises seek the greenest-possible route to achieving the other two objectives, namely by deploying LANs that reduce their organizations’ energy consumption.
Fortunately it now is possible to achieve all three goals at the same time by deploying an advanced optical LAN that is based on gigabit passive optical networking (GPON) technology and packet optical transport. A solution such as Tellabs® Optical Enterprise, which combines the Tellabs® 7100 Optical Transport System (OTS) with the Tellabs® 1100 Multiservice Access Platform, delivers a “70-80- 90%” set of benets: reducing capital costs by up to 70%; reducing power consumption by up to 80%; and reducing by up to 90% the required oor, rack and closet space. It also paves a controlled, cost- effective migration path to new technologies and services, such as 40- and 100-Gbps transport and terabyte switching.
A Closer Look at Optical LANs Tellabs Optical LAN is a Layer-2 transport medium based on PON technology and ber-optic cabling. It provides converged video, data and voice services at gigabit speeds over a single strand of ber. Current GPON technology uses single mode ber (SMF) as a medium for service delivery. SMF has a theoretical capacity to deliver bandwidth in excess of 50 terabits per second (Tbps), and extends the LAN reach up to 30 kilometers without signal regeneration. Compared with legacy active-Ethernet solutions, an optical LAN dramatically reduces both electronic and cabling requirements.
Also, optical LANs can help businesses make the most efcient use of existing network bandwidth. Sometimes enterprises, like their government-agency counterparts, use as little as 5 to 10% of link capacity. If businesses deploy dense wave division multiplexing (DWDM) technology, many use it only as “a dumb pipe” to interconnect routers. However, with an advanced optical LAN solution, they now can take advantage of more service intelligence in transport networks, such as the Layer-2 switching capabilities of the Tellabs 7100 OTS, to boost network efciencies and still obtain the scalable bandwidth they need.
Tellabs Optical Enterprise provides 70-80-90% savings for service providers.