From: Denise Donohue (fradendon@xxxxxxxxxxx)
Date: Tue Aug 06 2002 - 22:21:35 GMT-3
It might help if you explain the scenario. Each vlan doesn't *have* to be
its own IP subnet though it usually is because of arp issues for one thing.
If you are bridging between the two interfaces, you would probably use one
address space for both vlans, put no layer three address on the interfaces,
but put the address on the bvi interface as noted below. Remember that
bridging is layer two.
Denise
9566
----- Original Message -----
From: <EbonyGuru@aol.com>
To: <bluspooky@yahoo.com>
Cc: <ccielab@groupstudy.com>
Sent: Tuesday, August 06, 2002 8:41 PM
Subject: Re: Quick IRB one.
> So which vlan address do you use for the bvi?
>
> do you secondary address it from both vlans in the bridge group?
>
> TIA
>
> E'Guru
>
>
> In a message dated 07/08/2002 01:04:24 GMT Daylight Time,
bluspooky@yahoo.com
> writes:
>
>
> >
> >
> > You need to use IRB and assign the layer 3 address to
> > the BVI. Use the bridge-group command on each
> > interface that is part of the bridge-group and enable
> > routing for the layer 3 protocol.
> >
> > --- EbonyGuru@aol.com wrote:
> > > Hi guys,
> > >
> > > Do Ethernet interfaces and Trunking FastEthernet isl
> > > subinterfaces on a
> > > router doing irb need to share the same layer 3
> > > address?
> > >
> > > I am asking this cos of scenarios where you are
> > > bridging across multiple
> > > vlans. Is a vlan not by definition a separate layer
> > > 3 address space? If this
> > > is so, how can you have them in the same bridge
> > > group?
> > >
> > > TIA,
> > > E'Guru
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