Efm; Introduction; Preparing For Configurations; Default Configurations Of Efm - Raisecom ISCOM2600G-HI (A) Series Configuration Manual

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ISCOM2600G-HI (A) Series Configuration Guide
OAM loopback occurs only after the Ethernet OAM connection is established. When
connected, the active OAM entity initiates the OAM loopback command, and the peer OAM
entity responds to the command. When the peer OAM entity is in loopback mode, all packets
except OAM PDU will be retraced.
Switch A, in active mode, determines link status through returned packets, as shown in Figure
9-1.

Figure 9-1 OAM loopback

9.2 EFM

9.2.1 Introduction

Complying with IEEE 802.3ah protocol, Ethernet in the First Mile (EFM) is a link-level
Ethernet OAM technology. It provides link connectivity detection, link fault monitoring, and
remote fault notification for a link between two directly connected devices. EFM is mainly
used for Ethernet links on edges of the network accessed by users.

9.2.2 Preparing for configurations

Scenario
Deploying EFM feature between directly connected devices can efficiently improve Ethernet
link management and maintenance capability and ensure stable network operation.
Prerequisite



9.2.3 Default configurations of EFM

Default configurations of EFM are as below.
EFM working mode
Interval for sending messages
Link timeout
OAM
Connect interfaces.
Configure physical parameters to make interfaces Up at the physical layer.
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Function
9 OAM
Default value
Passive mode
10 × 100ms
5s
Disable
364