Carrier Ethernet

Carrier Ethernet refers to a set of technologies and services that extend the well-known Ethernet framework, typically used in local area networks (LANs), to the larger-scale networks operated by telecommunications companies. This concept enables businesses to connect their various sites and offices efficiently using the same Ethernet technology they use internally.

Ethernet has a long history of being a simple, efficient, and cost-effective technology. It has evolved significantly, starting from the original copper coaxial cable format to currently supporting high-speed transmissions over various media types, including optical fibers and wireless networks. Standard Ethernet speeds range from 1 Gigabit per second (Gbit/s) to 100 Gigabit per second, making it highly versatile.

Carrier Ethernet emerged from the need to extend Ethernet beyond its traditional LAN boundaries into wide-area networks (WANs) and metropolitan area networks (MANs). This transition helps telecommunication providers deliver Ethernet services to customers over broader distances. The technology leverages the cost-efficiency and simplicity of Ethernet, catering to the demands for higher speed and more reliable connectivity.

Key features of Carrier Ethernet include the ability to provide multiple service types, such as Ethernet Virtual Private Line (E-Line), Ethernet Virtual Private LAN (E-LAN), and Ethernet Virtual Private Tree (E-Tree). These services enable point-to-point, multipoint, and multicast connections, respectively. E-Line connects two Ethernet ports over a WAN, E-LAN connects multiple sites in a bridged network configuration, and E-Tree connects one or more root locations to several branch locations while preventing direct communication between branches.

Carrier Ethernet also supports crucial functionalities such as traffic management, quality of service (QoS) mechanisms, and operations, administration, and management (OAM) tools to maintain performance and service levels. Additionally, it offers resilience features comparable to traditional telecommunication standards, ensuring high availability and rapid fault recovery.

Carrier Ethernet demarcation devices play a critical role by creating a clear boundary between customer and provider networks. These devices are deployed at customer locations and are owned by the service provider, allowing them to maintain end-to-end control over the network service path.

By adopting Carrier Ethernet, service providers can utilize the familiar, cost-effective Ethernet technology to offer scalable, reliable, and versatile network services.