CLI Reference  GRTD Configuration Commands 
Conduct tests at a future time. 
Conduct tests at a fixed time each day. 
Conduct tests at a fixed time each week. 
Show the planned test timetable. 
 
diagnostic loopback-test 
As an exclusive command for port testing in privileged EXEC mode, this command is used 
to set the parameter for port setting, including port ID and port loopback mode. 
diagnostic  loopback-test  [slot  slot_id  [sub_system  subsys_id]]  port  {all  |  range 
port_range | port_id} loopback {mac | phy | none} 
Port No.: The format is 1/1-24. The number 1 before 
the forward slash is slot ID. 
(Optional) Subsystem ID (value range: 0-1), whose 
meaning is equivalent to cpu id in the show version 
command. 
This command has no default setting. 
Use the diagnostic loopback-test command to set the port ID and 
port loopback mode for port setting. 
Example  1:  The  following  example  tests  ports  1-10  of  module  1