Follow all previous troubleshooting steps in this chapter.
            
         
        
            Use this test for active ports displayed on the Device Details
                    Monitor page for Switch Engine switch
                stacks only.
            
        
        - 
                Navigate to .
            
 - 
                Select the device host name.
                
The Device Details Monitor page
                    displays.
             - 
                Scroll down to the port status graphic.
            
 - 
                Select an active (green) port.
            
 - 
                Scroll down to the Actions section.
            
 - 
                Select Run Cable Test.
            
 - 
                Select OK to proceed with the test.
                
                    
Note   
This test might temporarily interfere with port traffic.
 
                 
             - 
                If the test failed, checked the physical cable connected to the device.