From: Nick Shah (nshah@connect.com.au)
Date: Wed Sep 18 2002 - 02:06:49 GMT-3
Comments inline...
> Config:
>
> R1(FE 0/0)--(FE 0/1)CAT3550(FE 0/3)--(FE 0/0)R3
> |(FE 0/2)
> R2(FE 0/0)-------------
>
> FE 0/0 of R1 with ip 10.10.10.1/24 on VLAN1
> FE 0/0 of R2 with ip 10.10.20.1/24 on VLAN2
>
> FE 0/0 on R3 and FE 0/3 on CAT 3550 has been
> configured as trunk.
>
> VLAN3 is configured on CAT3550 with administration
> address 10.10.20.2/24
>
> Requirement:
>
> 1) Configure R3 to bridge VLAN2 and VLAN3.
Well configure a bridge group and apply it under the 2 sub interfaces on the
router, something like...
bridge 1 prot ieee
int fa0/0.1
bridge-group 1
int fa0/0.2
bridge-group 1
> 2) Configure R3 so that VLAN1 need to routed with
> VLAN2 and VLAN3.
You willneed to use bridge irb (integrated routing and bridging)
and interface BVI1, apply the ip address on there
> IP on R3 is 10.10.20.3 to bridge VLAN2 and VLAN3.
>
> CAT3550 has set up 10.10.20.3 as default gateway.
>
>
Try it out, it will work
rgds
"Nick
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