[c-nsp] Interface Bug?

[Eric Louie]

yes, shut/no-shut the interface during a maintenance window would be step 
one.  (especially if you can make up your own maintenance windows after 
hours)

After that, if you have an idle serial interface on that router, you might 
configure it for WFQ and see what the sho int displays.



----- Original Message ----- 
From: "John Neiberger" <John.Neiberger at efirstbank.com>
To: <cisco-nsp at puck.nether.net>
Sent: Tuesday, December 06, 2005 10:48 AM
Subject: [c-nsp] Interface Bug?


> Take a look at this:
>
> interface Serial1/2
>  ip address 10.a.b.c 255.255.255.0
> fair-queue       <-------*
> serial restart-delay 0
> end
>
> Router#sho int s1/2
> Serial1/2 is up, line protocol is up
>  Hardware is cxBus Serial
>  Description:
>  Internet address is 10.a.b.c/24
>  MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
>     reliability 255/255, txload 10/255, rxload 3/255
>  Encapsulation HDLC, crc 16, loopback not set
>  Keepalive set (10 sec)
>  Restart-Delay is 0 secs
>  Last input 00:00:00, output 00:00:00, output hang never
>  Last clearing of "show interface" counters 5d02h
>  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops:
> 3489
>  Queueing strategy: fifo        <--------*
>  Output queue: 0/40 (size/max)
>  5 minute input rate 20000 bits/sec, 22 packets/sec
>  5 minute output rate 61000 bits/sec, 22 packets/sec
>     21513041 packets input, 735104142 bytes, 0 no buffer
>     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
>     6 input errors, 2 CRC, 0 frame, 0 overrun, 0 ignored, 4 abort
>     21623314 packets output, 224367928 bytes, 0 underruns
>     0 output errors, 0 collisions, 0 interface resets
>     0 output buffer failures, 0 output buffers swapped out
>     0 carrier transitions
>     RTS up, CTS up, DTR up, DCD up, DSR up
> Router#
>
> The interface is configured for WFQ, but it is stuck on FIFO. I can't
> bounce the interface during the day or I'd try it to see if that fixes
> the problem. I don't recall ever seeing an interface get stuck like
> this. This is a 7513 running 12.2(28). Do you think that I just need to
> bounce the interface after-hours?
>
> Obviously, this isn't a major problem, just a curiosity, but I wanted
> to get some opinions on it. In the meantime, I'll check CCO for bugs.
>
> Thanks,
> John
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