162  MES3000 Ethernet switch series 
  Test failed—physical fault 
  OK—pair is OK 
  Open—break 
  Short—pair contacts are shorted 
  Impedance-mismatch—impedance mismatch (line attenuation is too large) 
  Short-with-pair—pairs are shorted together 
  Not tested—testing is not performed 
  Show the last testing results: 
console# show cable-diagnostics tdr 
console#show cable-diagnostics tdr  
 
   Port         Result      Length [meters]             Date             
----------- --------------- ---------------- --------------------------  
  gi1/0/1         OK               --          14-Mar-2014 13:48:12 
  gi1/0/2     Not tested                                                 
  gi1/0/3     Not tested                                                 
  gi1/0/4     Short cable          4           14-Mar-2014 13:51:08 
  gi1/0/5     Not tested                                                 
  gi1/0/6     Not tested                                                 
  gi1/0/7     Not tested                                                 
  gi1/0/8     Not tested                                                 
  gi1/0/9     Not tested                                                 
 gi1/0/10     Not tested                                                 
 gi1/0/11     Not tested                                                 
 gi1/0/12     Not tested                                                 
 gi1/0/13     Not tested                                                 
 gi1/0/14     Not tested                                                 
 gi1/0/15     Not tested                                                 
 gi1/0/16     Not tested                                                 
 gi1/0/17     Not tested                                                 
 gi1/0/18     Not tested                                                 
 gi1/0/19     Not tested                                                 
 gi1/0/20     Not tested                                                 
 gi1/0/21     Not tested                                                 
 gi1/0/22     Not tested                                                 
 gi1/0/23     Not tested                                                 
 gi1/0/24     Open cable               10          14-Mar-2014 13:41:43      
 te1/0/1        Fiber                                                   
 te1/0/2        Fiber                                                   
 te1/0/3        Fiber                                                   
 te1/0/4        Fiber                                                   
5.22.2 Optical transceiver diagnostics  
Diagnostics function allows to estimate the current condition of the optical transceiver and optical 
communication line.  
You  can  set  up  the  automatic  monitoring  of  communication  line  condition.  The  switch  performs 
periodic polling of the optical interface parameters and compares them to the threshold values defined by 
the transceiver manufacturer. If parameters fall outside of the allowable limits, the switch will generate 
warning and alarm messages. Threshold values may be overridden by the administrator if necessary.   
Command line request in global configuration mode appears as follows: 
console(config)#