On Thu, Jan 07, 2010 at 02:29:57PM -0500, Michael Ulitskiy wrote:
> I have it working exactly this way. my IOS is 12.1(26)E7
> the only special thing I remember about it is that if you want to spread
> port-channels across the
> different cards then those cards must be the same (or compatible). For
> example you can't have port-channel
> over ports on GE card and Enhanced GE card or between card with ACL daughter
> card and without it.
>
> Michael
>
> On Thursday 07 January 2010 12:12:11 pm Steven Pfister wrote:
> > I've got a 8540 switch running 12.1(20)E set up with IRB and I've
> > got two interfaces I'm looking at:
> >
> > interface GigabitEthernet0/0/3
> > no ip address
> > no ip redirects
> > !
> > interface GigabitEthernet0/0/3.1
> > description Native VLAN
> > encapsulation dot1Q 1 native
> > no ip redirects
> > !
> > interface GigabitEthernet0/0/3.99
> > encapsulation dot1Q 99
> > no ip redirects
> > no cdp enable
> > bridge-group 99
> >
> > The other interface is Gigabit0/0/4 and is set up the exact same
> > way. I'd like to be able to set up a channel group for those two
> > interfaces. I set up the port channel like:
> >
> > interface Port-channel1
> > no ip address
> > hold-queue 300 in
> > !
> > interface Port-channel1.1
> > encapsulation dot1Q 1 native
> > no ip redirects
> > !
> > interface Port-channel1.99
> > encapsulation dot1Q 99
> > no ip redirects
> > bridge-group 99
> >
> > But if I apply it to one of the interfaces, I get an error: "Error:
> > Interface has sub-interface configured". I can take the subinterfaces off
> > temporarily and set up the channel-group, but it I try and re-add the
> > subinterfaces, I can't do that. Is this something that is possible? If so,
> > what am I missing?
I'm not completely clear on what is being attempted here, but if the
goal is just to have a portchannel with 802.1q subinterfaces, you don't
configure the subinterfaces on the physical interface, just the
port-channel. So in the config, the following interfaces should exist:
Gi0/0/3
Gi0/0/4
Po1
Po1.1
Po1.99
-- Brett
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