Re: Trunk + Ether channel question.

From: Ivan (ivan@iip.net)
Date: Wed Mar 01 2006 - 07:13:55 GMT-3


Before creating Port-channel interface Cisco recomend no switchport on member
interface. When You enter any switchport command on Port-channel interface
this command autoaticaly appear on member interfaces. Show run display this
command on Port-Channel and physical interfaces.

On Wednesday 01 March 2006 10:42, Ahmed Shams wrote:
> I believe what they are giving you in their solution guide is based on the
> show outputs. I dont own a copy of that so can't be certain about it.
> Generally it is a best practise to make sure the member interfaces can
> trunk without any issue individually before you go any further with
> creating a port-channel.
>
> Try out the following to clear your doubts
>
> 1. Make sure your trunking works first
> 2. Create a portchannel and check the Po interface if it inherits the same
> configuration you configured previously on its member interfaces and
> technically it should.
> 3. Now change the encapsulation type on the Po interface and ask for the
> running config of your member interfaces : ) and they should inherit the
> same.
>
> If your Po interface and Member interfaces reflect the same configuration
> then you do not have to repeat the configuration on both all the way again.
> You change it on one and it reflects on the other.
>
> HTH
>
> On 3/1/06, PANDI MOORTHY <moorthypandi@gmail.com> wrote:
> > Hi Group,
> >
> >
> >
> >
> >
> > Trunk + Ether channel question.
> >
> >
> >
> > The question asks to configure the industry standard ether channel and
> > trunk
> > in there of the switch interfaces.
> >
> >
> >
> >
> >
> >
> >
> > The IE solution guide config as below:
> >
> >
> >
> > interface FastEthernet0/13
> >
> > channel-group 1 mode active
> >
> > !
> >
> > interface FastEthernet0/14
> >
> > channel-group 1 mode active
> >
> > !
> >
> > interface FastEthernet0/15
> >
> > channel-group 1 mode active
> >
> > !
> >
> > interface Port-channel1
> >
> > switchport trunk encapsulation dot1q
> >
> > switchport mode trunk
> >
> >
> >
> >
> >
> > 1) Based on the solution, the dot1q is configured only at the port
> > channel (LACP) interface. So the interface in this group will be
> > automatically be the trunk port, is it correct??
> >
> >
> >
> > 2) On other way, if the question asks to configure LACP port channel with
> > ISL trunk, can I follow the same setup, I mean just configure the trunk
> > at the port channel interface, will it be enough??
> >
> >
> >
> > Basically I am confused, on IE solution, for some scenario they apply
> > trunk
> > configuration at both port channel and FE interfaces. In the above case
> > applied only at the port channel interface.
> >
> >
> >
> >
> > Sorry to sent many question, Please advice me.
> >
> > Regards.
> > Pandi
> >
> > _______________________________________________________________________
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>
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-- 
Ivan


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