[ph-networkers] Cisco 1710 CRC and framing errors on Eth0

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Author: ph-networkers Mailing List
Date:  
To: cisco list
Subject: [ph-networkers] Cisco 1710 CRC and framing errors on Eth0
Cisco 1710 w/ IOS 12.3(11)T and 12.3(10)

The WAN side (Eth0) of my router is showing a large number of errors.
The LAN side (FastEth0) shows no errors. (hurray!)

I thought it might be a bad cable between Eth0 and my cable modem, but
I've tried several cables and this interface always accumulates errors
(CRC and frame) quickly. I suppose it could be my cable modem, but how
do I determine it?

Any ideas on what causes these sorts of errors and how to get rid of them?

Thanks,
Don Russell

Router#sho int
Ethernet0 is up, line protocol is up
   Hardware is PQUICC Ethernet, address is 0009.435f.d8e5 (bia 
0009.435f.d8e5)
   Description: WAN-Side Connection
   Internet address is 24.30.131.5/19
   MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
      reliability 255/255, txload 1/255, rxload 1/255
   Encapsulation ARPA, loopback not set
   Keepalive set (10 sec)
   Full-duplex, 10BaseT
   ARP type: ARPA, ARP Timeout 04:00:00
   Last input 00:00:00, output 00:00:01, output hang never
   Last clearing of "show interface" counters 03:14:04
   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 3000 bits/sec, 6 packets/sec
   5 minute output rate 0 bits/sec, 0 packets/sec
      128310 packets input, 14998411 bytes, 0 no buffer
      Received 116564 broadcasts, 0 runts, 0 giants, 0 throttles
      1163 input errors, 508 CRC, 655 frame, 0 overrun, 0 ignored
      0 input packets with dribble condition detected
      12978 packets output, 2840972 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 is up, line protocol is up
   Hardware is PQUICC_FEC, address is 0009.435f.d8e4 (bia 0009.435f.d8e4)
   Description: LAN-Side Connection
   Internet address is 10.10.10.1/24
   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 03:16:15
   Input queue: 0/32/0/0 (size/max/drops/flushes); Total output drops: 0
   Queueing strategy: fifo
   Output queue: 0/100 (size/max)
   5 minute input rate 0 bits/sec, 0 packets/sec
   5 minute output rate 1000 bits/sec, 0 packets/sec
      14302 packets input, 3041783 bytes
      Received 1871 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
      14012 packets output, 8129559 bytes, 0 underruns
      0 output errors, 0 collisions, 0 interface resets
      0 babbles, 0 late collision, 0 deferred
      0 lost carrier, 0 no carrier
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