[c-nsp] Interface Bug?

[John Neiberger]

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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