QTECH QSW-3400 Инструкция по настройке - Manual (Page 108)

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Execute the following command to make one of OAM peers exiting OAM loopback after
complete detection.
PE(config-if-ethernet1/1)# no ethernet-oam remote-loopback
Execute the following command without supporting remote loopback.
CE(config-if-ethernet1/1)#no ethernet-oam remote-loopback supported
12.4 EFM OAM Troubleshooting
When using EFM OAM, it occurs the problem, please check whether the problem is resulted
by the following reasons:

Check whether OAM entities of two peers of link in passive mode. If so, EFM OAM
connection can not be established between two OAM entities.

Ensuring SNMP configuration is correct, or else errored event can not be reported to
network management system.

Link does not normally communicate in OAM loopback mode, it should cancel remote
loopback in time after detect the link performance.

Ensuring the used board supports remote loopback function.

Port should not configure STP, MRPP, ULPP, Flow Control, loopback detection
functions after it enables OAM loopback function, because OAM remote loopback
function and these functions are mutually exclusive.