beautypg.com

EXFO ETS-1000L User Manual

Page 24

background image

Remote Management

18

ETS-1000L

OAM

OAM

OAM (Operations, Administration, and Maintenance) is a protocol of the
link state monitoring. The protocol operates at the Data Link Layer of OSI
model. To transmit data between two Ethernet-units, OAM protocol data
units (OAMPDU) are used.

An important feature of the OAM protocol is to provide the ability to use
Loopback mode for the remote end. Both units should support the IEEE
802.3ah standard.

ETS-1000L and remote unit should be connected directly. Possible OAM
states are described below.

Passive: In passive mode, the port can only response to Ethernet OAM
commands from the remote unit, but cannot initiate the Loopback
mode.

Off: OAM is disabled.