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# Test the bit errors on the link from MEP 1001 to MEP 4002 in service instance 1 on Device A.
[DeviceA] cfd tst service-instance 1 mep 1001 target-mep 4002
5 TSTs have been sent. Please check the result on the remote device.
# Display the TST result on MEP 4002 in service instance 1 on Device D.
[DeviceD] display cfd tst service-instance 1 mep 4002
Service instance: 1
MEP ID: 4002
Sent TST total number: 0
Received TST total number: 5
Received from 0010-fc00-6511, Bit True, sequence number 0
Received from 0010-fc00-6511, Bit True, sequence number 1
Received from 0010-fc00-6511, Bit True, sequence number 2
Received from 0010-fc00-6511, Bit True, sequence number 3
Received from 0010-fc00-6511, Bit True, sequence number 4