Is there an IOS equivalent to the CATOS "show channel hash" command?

Unanswered Question
Jun 2nd, 2008

I have an etherchannel going between two switches with 4 links. The switches run IOS. I am trying to determine which hosts are using which links of the ethernchannel. There is a CATOS command you can use to determine this , it is the "show channel hash" command. I am wondering if there is an IOS equivalent to this command, or some other IOS command I can use to determine which hosts are using which links in an etherchannel?


Also is there a web page or document which is a rosetta stone for finding IOS equivalents of CATOS commands, and vice versa?



I have this problem too.
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javickas1 Mon, 06/02/2008 - 06:34

The referenced command doesn't appear to work on the switches I have.

top_switch#test etherchannel load-balance interface port-channel 1


% Invalid input detected at '^' marker.

My switch is a 2950 running IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(22)EA4, System image file is "flash:/c2950-i6q4l2-mz.121-22.EA4.bin"

ronbuchalski Thu, 01/08/2009 - 10:37

The command 'test etherchannel load-balance' is for the Catalyst 6500 platform, and in order to use it you must first connect to the switch processor using the command 'remote login switch' at the privileged level.

Ron Buchalski

Pravin Phadte Mon, 06/02/2008 - 07:12

I feel show etherchannel load-balance should able to solve it for the ios you are running.

I am still not sure but below are the commands that are supported you can try to mix and match to find out.

show etherchannel

Use the show etherchannel user EXEC command to display EtherChannel information for a channel.

show etherchannel [channel-group-number] {detail | load-balance | port | port-channel | summary} [ | {begin | exclude | include} expression]

Syntax Description


(Optional) Number of the channel group. The range is 1 to 6.


Display detailed EtherChannel information.


Display the load-balance or frame-distribution scheme among ports in the port channel.


Display EtherChannel port information.


Display port-channel information.


Display a one-line summary per channel-group.

Hope this helps.


javickas1 Mon, 06/02/2008 - 07:56

etherchannel load-balance just shows the load balancing methodology, for instance Source MAC. It doesn't show which hosts are using which links though, just the overall methodology

Pravin Phadte Mon, 06/02/2008 - 09:18

Well may be the command is not supported.

Did u have a chance to check on this command.

show interfaces port-channel 1 etherchannel.

The book ment below is a good refrence.

Cisco Field Manual:Catalyst Switch Configuration

Dave Hucaby, CCIE No. 4594

Steve McQuerry, CCIE No. 6108

attached is one file for command refrence.

javickas1 Mon, 06/02/2008 - 11:13

This is what the command shows

top_switch#show interfaces port-channel 1 etherchannel

Age of the Port-channel = 4d:02h:49m:15s

Logical slot/port = 1/0 Number of ports = 4

GC = 0x00010001 HotStandBy port = null

Port state = Port-channel Ag-Inuse

Protocol = PAgP

Ports in the Port-channel:

Index Load Port EC state No of bits


0 00 Fa0/1 Automatic-Sl 0

0 00 Fa0/2 Automatic-Sl 0

0 00 Fa0/3 Automatic-Sl 0

0 00 Fa0/4 Automatic-Sl 0

Time since last port bundled: 4d:02h:32m:19s Fa0/4

I checked all the other permutations of the

show interfaces port-channel command, and non of them seem to show host info either

top_switch#show interfaces port-channel 1 ?

accounting Show interface accounting

capabilities Show interface capabilities information

counters Show interface counters

crb Show interface routing/bridging info

debounce Show interface debounce time info

description Show interface description

etherchannel Show interface etherchannel information

fair-queue Show interface Weighted Fair Queueing (WFQ) info

flowcontrol Show interface flowcontrol information

irb Show interface routing/bridging info

mac-accounting Show interface MAC accounting info

media Show interface media info

precedence Show interface precedence accounting info

private-vlan Show interface private vlan information

pruning Show interface trunk VTP pruning information

random-detect Show interface Weighted Random Early Detection (WRED) info

rate-limit Show interface rate-limit info

stats Show interface packets & octets, in & out, by switching pat

status Show interface line status

summary Show interface summary

switchport Show interface switchport information

transceiver Show interface transceiver

trunk Show interface trunk information

Pravin Phadte Mon, 06/02/2008 - 11:24

I hope someone else can reply on this post to justify if cisco really does support the command output for the switch model.

as per the doc it supports 6000 series.

dominic.caron Mon, 06/02/2008 - 11:48

Do this switch support the "show forward". I dont know if it will give you the physical port or the portchannel interface...I dont have any switch of that type.

javickas1 Tue, 06/03/2008 - 04:15

The switch is a 2950. I tried the show forward command but it does no appear to support it

top_switch#show forward


% Invalid input detected at '^' marker.


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