Hi, The input and output rate being 0 on port-channel is caused by software defect CSCsz18634 and it's fixed in 12.2(53)SE and later.
I would recommend to review the following documentations for more details and examples about etherchannel load balancing. Understanding EtherChannel Load Balancing and Redundancy on Catalyst Switches http://www.cisco.com/en/US/tech/tk389/tk213/technologies_tech_note09186a0080094714.shtml Load Balancing and Forwarding Methods http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/12.2_55_se/configuration/guide/swethchl.html#wp1275731 Best regards, Andras On Fri, Jul 29, 2011 at 6:32 AM, <[email protected]> wrote: > Hi, > > Have 2 100Mb eth ports in portchan, and 1 port seems to be doing all the > receiving: > > sh interfaces fastEthernet 0/1 > FastEthernet0/1 is up, line protocol is up (connected) Hardware is Fast > Ethernet, address is f4ac.c17d.af83 (bia f4ac.c17d.af83) > Description: FEC_TO_ESW01_P20 > MTU 1998 bytes, BW 100000 Kbit, DLY 100 usec, reliability 255/255, > txload 165/255, rxload 217/255 > ... 5 minute input rate 85322000 bits/sec, 13875 packets/sec > 5 minute output rate 65048000 bits/sec, 12044 packets/sec > > FastEthernet0/2 is up, line protocol is up (connected) Hardware is Fast > Ethernet, address is f4ac.c17d.af84 (bia f4ac.c17d.af84) > Description: FEC_TO_ESW01_P21 > MTU 1998 bytes, BW 100000 Kbit, DLY 100 usec, reliability 255/255, > txload 52/255, rxload 2/255 > ... > 5 minute input rate 871000 bits/sec, 229 packets/sec > 5 minute output rate 20396000 bits/sec, 3718 packets/sec > > > The portchan doesnt report any usage(reports packets/bytes etc just not data > rate or tx/rx)) for some reason on the 3560(the 2950 does though) > > #sh int port-channel 2 > Port-channel2 is up, line protocol is up (connected) Hardware is > EtherChannel, address is f4ac.c17d.af84 (bia f4ac.c17d.af84) > Description: FEC_TO_ESW01_BNE > MTU 1998 bytes, BW 200000 Kbit, DLY 100 usec, reliability 255/255, > txload 1/255, rxload 0/255 > 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: Fa0/1 Fa0/2 ARP type: ARPA, ARP Timeout 04:00:00 > Last input 16:49:20, output 00:00:00, output hang never > Last clearing of "show interface" counters 16:31:53 > Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 670097 > Queueing strategy: fifo > Output queue: 0/40 (size/max) > 5 minute input rate 0 bits/sec, 0 packets/sec > 5 minute output rate 0 bits/sec, 0 packets/sec > 654778461 packets input, 542298725539 bytes, 0 no buffer > Received 576270 broadcasts (124103 multicasts) > 0 runts, 0 giants, 0 throttles > 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored > 0 watchdog, 124103 multicast, 0 pause input > 0 input packets with dribble condition detected > 1141651151 packets output, 665041631494 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 > > ... > > Any suggestions on how to balance the traffic better? > > switches are 3560+2950 > > Thanks in advance. > > ------------------------------------------------------------------------- > This e-mail was sent via GCOMM WebMail http://www.gcomm.com.au/ > > > _______________________________________________ > 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/
