show diagnostic result 
Use this command to display all diagnostic test results in privileged EXEC mode. 
show  diagnostic  result  [slot  slot_id  [sub_system  subsys_id]]  [test  {all  |  test-id  |  range 
test-range}] 
(Optional) Subsystem ID (value range: 0-1), whose 
meaning is equivalent to cpu id in the show version 
command. 
Example 1: Use the show diagnostic result slot 2  command to 
display the following: 
Ruijie#sho dia result  slot 3/0 t a 
Current bootup diagnostic level: minimal 
Overall Diagnostic Result for Module: PASS 
Test result: (P = Pass, F = Fail, U = Untested) 
 1) PortLoopbackTest(loop mode: Mac):  
 slot 0 port  1  2  3  4  5  6  7  8  9 10 11 12 13 
14 15 16 17 18 19 20 21 22 23 24 25 
                 P  P  P  P  P  P  P  P  P  P  P  P  P  P  
P  P  P  P  P  P  P  P  P  P  P 
                 26 27 28 29 30 31 32 33 34 35 36 37 38 
39 40 41 42 43 44 45 46 47 48 
                  P  P  P  P  P  P  P  P  P  P  P  P  P