From: Brian McGahan (brian@cyscoexpert.com)
Date: Wed Sep 11 2002 - 11:56:11 GMT-3
Frank,
This is the advantage of IRB over regular transparent bridging.
IRB allows you to route a protocol on an interface (IP for example),
while routing & bridging another protocol on that interface (IPX for
example). The following example would accomplish just this:
Interface Ethernet 0
Ip address 1.1.1.1 255.0.0.0
Bridge-group 1
!
Interface Ethernet 1
Ip address 2.2.2.2 255.0.0.0
Bridge-group 1
!
Interface BVI 1
IPX network 1
!
Bridge IRB
Bridge 1 protocol IEEE
Bridge 1 route IPX
IP is routed normally. Only IPX is affected by the IRB config.
HTH
Brian McGahan, CCIE #8593
Director of Design and Implementation
brian@cyscoexpert.com
CyscoExpert Corporation
Internetwork Consulting & Training
http://www.cyscoexpert.com
Voice: 847.674.3392
Fax: 847.674.2625
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> frank.yu@japan.bnpparibas.com
> Sent: Wednesday, September 11, 2002 6:32 AM
> To: ccielab@groupstudy.com
> Subject: irb bridging help
>
> Group,
>
> Just wonder if we have to bridging traffic through a interface
let's
> say
> fa0/0 and fa0/0 is also in ospf domain. Does that mean we have to
remove
> all the interface commands under fa0/0 (including ip address) and put
> them
> under a BVI interface?
> Also I notice that in the above situation if I leave the ip address
> under
> fa0/0, I still be able to ping the ip address from the other router,
why??
> Thank for the input in advance.
>
> Frank
>
>
>
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