Solutions > Multiservice Networking Solutions

• About Layer 3 Multiservice Networking
• Emerging Multi-Service Network Architecture
• Next-Generation Multi-Service Networks
• Layer 3 in Depth

Next-Generation Multiservice Networks

Traditional multiservice networks focus on Layer 2 Frame Relay and ATM services, using a common ATM backbone to consolidate traffic. This generation of ATM switches was easily extended to support DSL and cable broadband build-outs.

In contrast, next-generation multiservice networks provide carrier-grade, Layer 3 awareness, such as IP and MPLS, in addition to traditional Layer 2 services. These next-generation multiservice networks can take the form of ATM-, blended IP+ATM-, IP/MPLS-, or SONET/SDH-based networks in order to deliver multiple traffic services over the same physical infrastructure.

Even with the existence of next-generation technology architectures, most providers are not in a position to turn over their core technology in wholesale fashion. Provider technology is often on up-to-decade-long depreciation schedules, and functional life must often parallel this horizon, even if equipment is repurposed and repositioned in the network. Then there is the customer-facing issue of technology service support and migration. Though you might wish to sunset a particular technology, the customer is not often in support of your timetable. This requires a measured technology migration supporting both heritage services along with the latest service features. Next-generation technology versions are often the result, to allow new networking innovations to overlap established network architectures.