[c-nsp] Bridging ethernet to MLPPP

[Todd Shipway]

I've got this working good over multiple bridged MLPPP connections.  There was a thread on this previously when I had some issues with it.  You basically need to use a BVI interface with the bridge to get things to work properly.  Sample config that helped me get this working is below.
 
R1/R2:
Bridge irb
Bridge 1 protocol ieee
Bridge 1 route ip
Int bvi 1
Ip add xxx
Int serial
Bridge-group 1

R3 (transparent bridging)
No ip routing
Bridge 1 protocol ieee
Int serial
Bridge-group 1
Int serial
Bridge-group 1



________________________________

From: cisco-nsp-bounces at puck.nether.net on behalf of Lee
Sent: Tue 12/28/2010 7:25 AM
To: Joe Freeman
Cc: Cisco-nsp
Subject: Re: [c-nsp] Bridging ethernet to MLPPP



Have you tried it without the 'bridge irb'?
It sounds like you want to bridge IP between the two sites and I think
integrated routing & bridging is going to want to route IP..

Regards,
Lee


On 12/27/10, Joe Freeman <joe at netbyjoe.com> wrote:
> I've got a situation where a customer is having to relocate from one
> facility to another a few  miles away. This customer has a 100Mb metro
> ethernet connection at the old location, and can't get it moved for several
> months.
>
> To help them out, we're trying to setup a pair of 3620's that we had with
> wic-1dsu-t1's (4 ea router) to bridge the metro e across a multilink ppp
> group and back to an ethernet connection at the new site.
>
> For some reason, I can't get this to work. Here's the config I'm using on
> each side-
>
> bridge irb
> bridge 1 protocol ieee
>
> int serial 0/0
> encaps ppp
> multilink-group 1
> int serial 0/1
> encaps ppp
> multilink-group 1
> int serial 1/0
> encaps ppp
> multilink-group 1
> int serial 1/1
> encaps ppp
> multilink-group 1
>
> int multilink 1
> encaps ppp
> bridge-group 1
>
> int fa0/0
> bridge-group 1
>
>
> So I figure I'm either missing something simple, or something major, like
> it's just not possible with this hardware. Either way, I'd appreciate
> whatever thoughts anyone has.
>
> Thanks-
> Joe
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