From: pkoltl@xxxxxx
Date: Wed Jul 31 2002 - 13:13:38 GMT-3
> IRB allows to bridge a protocol between bridged interfaces(two ethernet
> interfaces in this case) and router between shared routed interface BVI
> and other routed interface(the serial one). So you must take bridge
> group out of serial interface.
> To bridge ipx traffic, you need to define a second bridge group and put
> it under all three interfaces. Since ipx routing is not turned on but
> ip routing is, so the 2nd bridge group will successfull bridge ipx and
> ignore ip.
Thanks, you exactly see what I meant but an interface cannot be member of
multiple bridge groups.
The problem is with IP. If I route and bridge it
(bridge 1 route ip),
IP traffic is not working on S0/1 (cannot ping).
If I only route it
(bridge 1 route ip
no bridge 1 bridge ip),
Serial works fine, but I cannot ping out on ethernets (as it would need
bridging IP).
If I only bridge it
(no config-lines),
I cannot ping out on either interface.
I understand now all 3 cases but I'm still curious whether there is a
solution to the situation. So, all 3 interfaces should bridge IPX, S0/1 has
its own IP address but the two ethernets do not, as they are on the same
VLAN.
Any good ideas?
Bye,
Peter
Ming
--- "Lassak, Mike" <mikel@aiinet.com> wrote:
> Take the bridge group off the serial interface.
>
> -----Original Message-----
> From: pkoltl@bcn.hu [mailto:pkoltl@bcn.hu]
> Sent: Wednesday, July 31, 2002 4:35 AM
> To: ccielab@groupstudy.com
> Subject: IRB - 2 interfaces in the same VLAN
>
>
> Hello,
>
> I have 3 interfaces on a router (S0/1, E1/0, F0/0) and I want to
> bridge IPX
> and route IP between them. The two ethernets connect to the same VLAN
> so
> they cannot have their own IP addresses, they have to share a common
> IP
> address. Is it possible to do with IRB or other bridging method?
>
> I've created the following config:
>
> bridge irb
> interface FastEthernet0/0
> no ip address
> bridge-group 1
> interface Serial0/1
> ip address 152.3.8.10 255.255.255.252
> encapsulation ppp
> bridge-group 1
> !
> interface Ethernet1/0
> no ip address
> bridge-group 1
> !
> interface BVI1
> ip address 152.3.8.18 255.255.255.252
> bridge 1 protocol ieee
> bridge 1 route ip
>
> Unfortunately, the S0/1 interface does not route IP, it cannot be
> pinged
> from the other side of the link unless I remove it from the
> bridge-group.
> Maybe I need two bridge groups but I think no bridging can be
> configured
> between bridge groups.
>
> Thanks,
> Peter
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