From: Barney Gaumer (bagaumer@yahoo.com)
Date: Thu Aug 07 2003 - 16:56:14 GMT-3
Peng, Joe is right.
One note I would make about all of this is that the
ADMIN Group or port-channel group isn't dynamicly
created when the etherchannel group members are on
different switch blades as in a Cat 4000 or 6000. You
must define the ADMIN Group manually and specify what
mod/port belong to that group.
Not an issue on the smaller switches but still useful
info.
Cheers,
Barney
--- Joe Martin <jmartin@capitalpremium.net> wrote:
> Peng,
>
> You are correct. It is not necessary to manually
> create the int
> port-channel 1. It is created automatically when
> you enter the
> channel-group command on the physical interface.
> However, typically
> etherchannels are trunk interfaces and all the
> physical interfaces in
> etherchannel must use the same trunk config.
> Typically I just enter the
> channel-group command on each of the physical
> interfaces and then I use the
> port-channel interface to configure the trunk; all
> the physical interfaces
> in the channel group will inherit the config of the
> port-channel interface.
>
> Issue the following commands:
>
> int fa0/23
> channel-group 1 mode des
>
> int fa0/24
> channel-group 1 mode des
>
> int por1
> swit trunk encap dot1q
> swit mode trunk
>
> now do a show run and you will see that the 2
> physical interfaces inherited
> the trunk commands from the port-channel interface.
> This is also nice if
> you add another interface to the ehterchannel later.
>
> So, no it is not required, but it does ease
> administration.
>
> HTH,
>
> Joe Martin
>
> -----Original Message-----
> From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com]On Behalf Of
> Peng Zheng
> Sent: August 07, 2003 10:40 AM
> To: ccielab@groupstudy.com
> Subject: Etherchannel
>
>
> When I configure layer 2 Etherchannel on 3550, do I
> need to configure
>
> interface Port-channel1?
>
> I think it's not necesary, but the solution for
> 6colab
> has it.
>
>
>
>
>
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