2 Replies Latest reply on Nov 15, 2010 10:04 AM by elejeune

    Errors description in NPM



      Currently in NPM, on interfaces details we are able to see input/output errors or discards. What is the meaning of those values (CRC, frame, overrun, ignored...)? On the switch we are able to see :

      174316960 packets input, 719586449 bytes, 9170041 no buffer
           Received 173407095 broadcasts (0 multicast)
           0 runts, 0 giants, 0 throttles
           0 input errors, 0 CRC, 0 frame, 0 overrun, 9170041 ignored
           0 watchdog, 162541217 multicast, 0 pause input
           0 input packets with dribble condition detected
           1020076 packets output, 109444133 bytes, 0 underruns
           0 output errors, 0 collisions, 2 interface resets
           0 babbles, 0 late collision, 0 deferred
           0 lost carrier, 0 no carrier, 0 PAUSE output
           0 output buffer failures, 0 output buffers swapped out

      Is there a way to see only CRC errors on interfaces ?

      Many thanks.


        • Re: Errors description in NPM
          Andy McBride

          Do you mean that you would only want to see CRC errors in the NPM web? If so, here is a Cisco CRC Errors. From the information you have provided you are dropping inbound packets due to buffer failures. Buffer misses are normal and just mean that a packet had to be handeled by a secondary buffer, but failures = drops. You can use show buffers to see which pools are dropping and allocate more space in them.

            • Re: Errors description in NPM


              So the value seen in the Web page as Received Errors or Transmit errors is the sum of all errors (CRCs, overrun, frames and buffer misses) right ?

              The only way to see CRCs errors is to declare an Universal poller and to assign to all interfaces ?

              Many thanks for your answers..