[c-nsp] Constant output drops on etherchannel

[Dan Letkeman]

Hello,

I'm seeing many of our etherchannel's on different switches having output drops:

Port-channel2 is up, line protocol is up (connected)
  Hardware is EtherChannel, address is 001b.d59d.7199 (bia 001b.d59d.7199)
  MTU 1500 bytes, BW 200000 Kbit, DLY 100 usec,
     reliability 255/255, txload 24/255, rxload 2/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 100Mb/s, link type is auto, media type is unknown
  input flow-control is off, output flow-control is unsupported
  Members in this channel: Fa0/23 Fa0/24
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:00, output 2w0d, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 898085
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 1601000 bits/sec, 1044 packets/sec
  5 minute output rate 18983000 bits/sec, 1739 packets/sec
     1334506578 packets input, 1057033776276 bytes, 0 no buffer
     Received 36222411 broadcasts (31794053 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 31794053 multicast, 0 pause input
     0 input packets with dribble condition detected
     1118193661 packets output, 625080881800 bytes, 0 underruns
     0 output errors, 0 collisions, 0 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


Is there something else I need to configure to minimize this?

I also see that it usually uses one port of the etherchannel to a high
degree, say 92% before it seems to push data through the other
connection.


Thanks,
Dan.