I have been noticing this for sometime and it does not seem to be causing much of a problem to the connectivity, but I would like to prevent any problems. In the output below of the serial interface, the input queue shows: Input queue: 0/75/94249/0 (size/max/drops/flushes). This is after clearing the counters an hour ago. The strange thing is that the size is always zero. There never seems to be packets waiting in the queue, so why do they get dropped? Any ideas? I have followed most of the troubleshooting steps I can find on Cisco but do not seem similar.
Thanks.
Serial0 is up, line protocol is up
Hardware is PQUICC with Fractional T1 CSU/DSU
MTU 1500 bytes, BW 384 Kbit, DLY 20000 usec,
reliability 255/255, txload 3/255, rxload 3/255
Encapsulation FRAME-RELAY IETF, loopback not set
Keepalive set (10 sec)
LMI enq sent 377, LMI stat recvd 377, LMI upd recvd 0, DTE LMI up
LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
LMI DLCI 1023 LMI type is CISCO frame relay DTE
Broadcast queue 0/64, broadcasts sent/dropped 62/0, interface broadcasts 0
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 01:02:50
Input queue: 0/75/94249/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 6000 bits/sec, 30 packets/sec
5 minute output rate 6000 bits/sec, 4 packets/sec
105333 packets input, 3785261 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
12041 packets output, 4044129 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
