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CLI-based Configuration Guide - Reliability

AR100-S, AR110-S, AR120-S, AR150-S, AR160-S, AR200-S, AR1200-S, AR2200-S, and AR3200-S V200R009

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Overview of EFM

Overview of EFM

Ethernet in the First Mile (EFM) effectively improves Ethernet management and maintenance capabilities and ensures the stable operation of networks.

Easy-to-use Ethernet techniques support good bandwidth extensibility on low-cost hardware. With these advantages, Ethernet services and structures are the first choice for many enterprise networks. The increasing popularity of Ethernet applications encourages operators to use improved Ethernet operation, administration, and maintenance (OAM) functions to maintain and operate Ethernet networks.

EFM is a type of link-level OAM technology and defines the specifications of the Ethernet physical layer and OAM used for user access. EFM provides link connectivity detection, link fault monitoring, remote fault notification, and remote loopback for a link between two directly connected devices.

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Updated: 2019-05-17

Document ID: EDOC1000174116

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