From: Tim Last (packtmon@yahoo.com)
Date: Fri Apr 09 2004 - 12:19:01 GMT-3
Hi Bob,
Thanks for getting back to me on this.
Your response, though, surprised me a bit. I was expecting to hear that the scenario below did NOT require the "bridge # route ip" because there's only 1 interface in the bridge group, int S0. If, however, there were 2 or more interfaces in the bridge group I would need that command so that ip could be bridged among the interfaces in the bridge group and also routed, if need be to the bvi interface.
But, it sounds like this is another instance of my misunderstanding a concept, so it's good you cleared this up.
So, can I say that for the lab since there's no ipx or appletalk, that if I need to configure IRB, I must always configure the "bridge # route ip" command (in addition, of course, to configuring the bvi and bridge-groups)?
Thanks, Tim
Bob Sinclair <bsinclair@netmasterclass.net> wrote:
Tim,
Yes, you will need to use the Bridge X route IP command on any router on
which you want to configure a BVI. If you do a show int IRB command, it
will verify which protocols are being bridged and routed on each interface.
All protocols are bridged (only) by default. You will need to both bridge
and route IP to use the BVI.
HTH,
Bob Sinclair
CCIE #10427, CISSP, MCSE
www.netmasterclass.net
----- Original Message -----
From: "Tim Last"
To: "Group Study"
Sent: Friday, April 09, 2004 9:54 AM
Subject: IRB
> Hi guys,
>
> When configuring IRB such that ip can be bridge or routed, does the
command,
>
> bridge # route ip, have to be configured?
>
> Here's what I'm trying to achieve:
>
> I want ip pkts to be able to enter rtr from int S0, bridged to the bvi,
and then routed out int E0. For this to occur do I need the "bridge 1 route
ip" command? Why or why not?
>
>
> bridge-grp 1 S0 rtr E0
>
> router config:
>
> bridge 1 prot ieee
> bridge irb
>
> int S0
> bridge-group1
>
> int bvi 1
> ip addr x.x.x.x
>
> int E0
> ip addr y.y.y.y
>
> Thanks in advance, Tim
>
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