[c-nsp] Deferred packets on 2950 10/full interface

[Larry Smith]

Clinton,

  As John mentions, duplex problems can be difficult to identify accurately.  
I would probably be more concerned about the errors

>>       316 input errors, 0 CRC, 75 frame, 0 overrun, 0 ignored

up front than the deferred as they imply a cable problem somewhere generally.  
Course it appears the counters are 6 weeks and running; how about clearing 
the counters and see what it says in 4/8/16 hours ???

-- 
Larry Smith
SysAd ECSIS.NET
sysad at ecsis.net

On Friday 14 January 2005 16:25, Clinton Work wrote:
> I'm seeing 3716 deferred frames on a 10/full interface. I suspect a
> duplex mismatch even though the Telco assures me that their interface is
> 10/full as well. Anybody seen this problem on another 2950 switch?
>
>
> Router#show int fa0/1
> FastEthernet0/1 is up, line protocol is up (connected)
>    Hardware is Fast Ethernet, address is 000e.38a0.3901 (bia
> 000e.38a0.3901) Description:
>    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, 10Mb/s
>    input flow-control is off, output flow-control is off
>    ARP type: ARPA, ARP Timeout 04:00:00
>    Last input 00:00:00, output 00:00:05, output hang never
>    Last clearing of "show interface" counters 6w0d
>    Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
>    Queueing strategy: fifo
>    Output queue :0/40 (size/max)
>    30 second input rate 0 bits/sec, 0 packets/sec
>    30 second ouxtput rate 0 bits/sec, 0 packets/sec
>       2979697 packets input, 477032533 bytes, 0 no buffer
>       Received 2612753 broadcasts, 241 runts, 0 giants, 0 throttles
>       316 input errors, 0 CRC, 75 frame, 0 overrun, 0 ignored
>       0 watchdog, 2612346 multicast, 0 pause input
>       0 input packets with dribble condition detected
>       1110744 packets output, 296966944 bytes, 0 underruns
>       0 output errors, 0 collisions, 0 interface resets
>       0 babbles, 0 late collision, 3716 deferred
>       0 lost carrier, 0 no carrier, 0 PAUSE output
>       0 output buffer failures, 0 output buffers swapped out
>
> IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(13)EA1, RELEASE
> SOFTWARE (fc1)
> Copyright (c) 1986-2003 by cisco Systems, Inc.
> Compiled Tue 04-Mar-03 02:14 by yenanh
> Image text-base: 0x80010000, data-base: 0x805A8000
> Model number: WS-C2950-12
>