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How do I troubleshoot Interface input errors on my Cisco 2651XM Router.

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Last Modified: 2012-08-14
I have a cisco 2651XM Router, and have been recieving input errors on my FA0/0 port.  This is my port that connects to MY ISP.  Any ideas on how to troubleshoot this?  Below is my show interface ouput, for both interfaces on my router.  Thanks

FastEthernet0/0 is up, line protocol is up
  Hardware is AmdFE, address is 0018.73df.c600 (bia 0018.73df.c600)
  Internet address x.x.x.x/29
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:00, output 00:00:00, output hang never
  Last clearing of "show interface" counters 9w1d
  Input queue: 0/75/921750/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 386000 bits/sec, 38 packets/sec
  5 minute output rate 48000 bits/sec, 45 packets/sec
     54837103 packets input, 4254770465 bytes
     Received 31696 broadcasts, 0 runts, 0 giants, 0 throttles
     14626 input errors, 0 CRC, 0 frame, 177 overrun, 14449 ignored
     0 watchdog
     0 input packets with dribble condition detected
     73465617 packets output, 1299728538 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
FastEthernet0/1 is up, line protocol is up
  Hardware is AmdFE, address is 0018.73df.c601 (bia 0018.73df.c601)
  Internet address is x.x.x.x/23
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, 100BaseTX/FX
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:11, output 00:00:00, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 50000 bits/sec, 41 packets/sec
  5 minute output rate 366000 bits/sec, 37 packets/sec
     79550620 packets input, 1305984725 bytes
     Received 294268 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog
     0 input packets with dribble condition detected
     61688152 packets output, 707544604 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets
     0 babbles, 0 late collision, 0 deferred
     2 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out
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Commented:
I would start by replacing the cables and see if it makes a difference after clearing the counters.

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Agree with jjmartineziii.

For additional monitoring, look at the free 30 day trial of Solarwinds Engineers Edition (www.solarwinds.com).  Gather some historical data on the errors and contact your ISP.

Author

Commented:
OK.  I will start by replacing cables.  I have contacted my ISP.  We both sent each other 10000 pings with a success rate of 100%.  It doesn't look to be losing packets.

Author

Commented:
Thanks
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