Command introduced before JUNOS Release 7.4.
Start a bit error rate test (BERT) on an E3 interface.
e3-fpc/pic/port — E3 interface name.
Before starting a BERT, you must disable the interface. To do so, include the disable statement at the [edit interfaces interface-name] hierarchy level. You can run a BERT on only one interface per PIC at a time.
To display the results of the BERT, use the show interfaces extensive command.