What's the spanning-tree state of that port (for all vlans on that port), DTP, CDP, etc?
input queue drops on L2 ports is poorly documented (if at all). I have guessed that they indicate bpdu's being thrown away or other such stuff. Dale ---------------------------------- Dale W. Carder - Network Engineer University of Wisconsin at Madison http://net.doit.wisc.edu/~dwcarder On Apr 23, 2007, at 12:21 PM, Matt Ryan wrote: > Seeing a large number of drops on a switchport interface without > any obvious > reason (no errors, buffer misses, CPU load etc): > > Router#sh int fa2/2 > FastEthernet2/2 is up, line protocol is up (connected) > Hardware is C6k 100Mb 802.3, address is 0004.de84.1431 (bia > 0004.de84.1431 > ) > MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec, > reliability 255/255, txload 1/255, rxload 1/255 > Encapsulation ARPA, loopback not set > Keepalive set (10 sec) > Full-duplex, 100Mb/s > input flow-control is off, output flow-control is unsupported > ARP type: ARPA, ARP Timeout 04:00:00 > Last input never, output 18w2d, output hang never > Last clearing of "show interface" counters never > Input queue: 0/2000/1158238/0 (size/max/drops/flushes); Total output > drops: 0 > Queueing strategy: fifo > Output queue: 0/40 (size/max) > 5 minute input rate 128000 bits/sec, 113 packets/sec > 5 minute output rate 2000 bits/sec, 2 packets/sec > 943186717 packets input, 180091004357 bytes, 0 no buffer > Received 126945712 broadcasts (22133563 multicasts) > 0 runts, 0 giants, 0 throttles > 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored > 0 watchdog, 0 multicast, 0 pause input > 0 input packets with dribble condition detected > 47163411 packets output, 7169043006 bytes, 0 underruns > 0 output errors, 0 collisions, 4 interface resets > 0 babbles, 0 late collision, 0 deferred > 0 lost carrier, 0 no carrier, 0 PAUSE output > 0 output buffer failures, 0 output buffers swapped out > > Router#sh int fa2/2 counters errors > > Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize > OutDiscards > Fa2/2 0 0 0 0 > 0 0 > > Port Single-Col Multi-Col Late-Col Excess-Col Carri-Sen > Runts > Giants > Fa2/2 0 0 0 0 0 > 0 0 > > Port SQETest-Err Deferred-Tx IntMacTx-Err IntMacRx-Err Symbol- > Err > Fa2/2 0 0 0 > 0 0 > > Any idea's what else to look for? > > > > Matt. > _______________________________________________ > cisco-nsp mailing list [email protected] > https://puck.nether.net/mailman/listinfo/cisco-nsp > archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
