Residential Broadband Aggregation

Business Ethernet

Network Convergence

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Ethernet has become the de facto standard way of delivering data services over a transport infrastructure. For example, looking at the way service providers deliver multicast and point to point services over the transport network, the following trends are evident:

• Multicast services such as IPTV are delivered over an Ethernet LAN (E-LAN) or Virtual Private LAN Service (VPLS) infrastructure
• Point to point services are delivered over an Ethernet Line (E-Line) infrastructure, providing, e.g., private line business connectivity, or as E-LAN services, providing Layer-2 VPN business connectivity.

Service providers worldwide rely today on packet-optimized transport to provide carrier-class Ethernet services, which allows them to take advantage of reduced-cost Ethernet interfaces, nowadays recognized also as the most efficient way of delivering IP-enabled services. Carrier Ethernet Transport combines the strengths and benefits of both traditional Carrier Ethernet switches and NG MSPPs, including the flexibility and scalability of the former and the high-availability, reliability and management philosophy of the latter.

An optimal Ethernet-based service infrastructure represents in most cases a viable cost reduction strategy for incumbent and competitive service providers, as it provides the most cost-efficient method of delivering both IP-enabled as well as L2 services such as IPTV, L2VPN and Ethernet virtual private line (EVPL) services, which becomes a replacement for conventional voice and TDM private line services.

Corrigent’s products have been certified by the MEF to offer carrier-class Ethernet services, including E-Line and E-LAN services. They provide standard support for Ethernet Private Line (EPL) and Virtual Private Line (EVPL) services, as well as multipoint Ethernet services such as Virtual Private LAN Services (VPLS). In both cases, Ethernet traffic is transported natively over the network infrastructure, simplifying service provisioning and providing high scalability, resulting in a reduction of capital and operational expenditures when compared to other solutions. Specifically, point to point Ethernet services (MEF E-Line) can be established between any pair of ports or virtual ports, i.e. VLAN-based services, on any interface card in any node in the network. Similarly, multipoint Ethernet services (MEF E-LAN) can be established among any group of ports or virtual ports, i.e. VLAN-based services, on any interface card in any node in the network.

Ethernet traffic is locally aggregated at the card and node level, and then statistically multiplexed with other data and TDM services over the shared network infrastructure, resulting in optimal bandwidth utilization and efficient use of network resources. Sophisticated traffic management and network-wide CAC mechanisms guarantee SLA for all users under any network condition.

Corrigent’s product lines offer a fully-integrated end-to-end Ethernet transport solution under a single management system based on Corrigent's CM-View NMS. This guarantees consistent CoS, OAM and high-availability on an end-to-end basis, and reduces total cost of ownership (TCO).