Lots of input errors...

[Shawn Ramsey]

> Improperly negotiating 100-BT/FD and generating lots of late collisions,
> for one.  Is the switch managed?  What does it's syslog output or the
> local CLI say about the port(s) in question?  In Cisco parlance, you may
> want to clear the interface counters and observe 'sh int...' output while
> transferring a large file.  I must say, however, that if negotiation is to
> blame (and Cisco's is notoriously bad), you should be seeing degrading
> network performance.  (I think you'd notice that.)

Well, we had our ISP clear the stats, and their end is showing no errors...
Here is the output before and after, although the stats before are like 35
weeks old. The second stats are about three hours old.

ba01.b001200-2.lax01#sh int FastEthernet21
FastEthernet21 is up, line protocol is up
  Hardware is epif_port, address is 0005.5e43.eb1b (bia 0005.5e43.eb1b)
  Description: CUST-W FE LZ-MO
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, rely 255/255, load 187/255
  Encapsulation ARPA, loopback not set, keepalive set (10 sec)
  Full-duplex, 100Mb/s, 100BaseTX
  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 35w0d
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 0/75, 0 drops
  5 minute input rate 28864000 bits/sec, 6461 packets/sec
  5 minute output rate 73561000 bits/sec, 7564 packets/sec
     771797665 packets input, 3456898980 bytes, 0 no buffer
     Received 10505 broadcasts, 86892 runts, 15 giants, 0 throttles
     188392 input errors, 90405 CRC, 11080 frame, 0 overrun, 0 ignored, 0
abort
     0 watchdog, 30038839 multicast
     0 input packets with dribble condition detected
     2127564566 packets output, 1282358462 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

ba01.b001200-2.lax01#sh int FastEthernet21
FastEthernet21 is up, line protocol is up
  Hardware is epif_port, address is 0005.5e43.eb1b (bia 0005.5e43.eb1b)
  Description: CUST-W FE LZ-MO
  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, rely 255/255, load 192/255
  Encapsulation ARPA, loopback not set, keepalive set (10 sec)
  Full-duplex, 100Mb/s, 100BaseTX
  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 02:44:02
  Queueing strategy: fifo
  Output queue 0/40, 0 drops; input queue 1/75, 0 drops
  5 minute input rate 21260000 bits/sec, 5911 packets/sec
  5 minute output rate 75635000 bits/sec, 7375 packets/sec
     57291936 packets input, 981288818 bytes, 0 no buffer
     Received 9 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     0 watchdog, 0 multicast
     0 input packets with dribble condition detected
     72313803 packets output, 2238000602 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