I am using GNS3, and a 3700 as L3 switch (router with ethernet switch module); everything is OK, but when I want to configure two ports as an etherchannel connection, the command channel-group doesn't have mode on.

Can anyone help me?

  • 1
    What version of IOS are you using?
    – Ron Trunk
    Commented Apr 22, 2016 at 19:01

1 Answer 1


The problem was existing because I was not using ether switch module ports that is added to router to handle it as switch

  • Good find. You should mark your own answer as the accepted answer if the question was resolved.
    – Eddie
    Commented May 23, 2016 at 15:17

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