[nsp] Bridging?

David Curran dm at nuvox.net
Thu Feb 26 11:05:38 EST 2004

If you're doing nothing but bridging (i.e. no routing) you can do the

bridge 1 protocol ieee
bridge 1 irb

int e0/0
 bridge 1

int s0/0:0
 bridge 1

If you need to route some other protocol, you'll need to add

bridge 1 route <protocol>
interface bvi 1
 <protocol options>

It should work just fine.  Look at this link:



-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net]On Behalf Of Vincent De Keyzer
Sent: Thursday, February 26, 2004 8:37 AM
To: cisco-nsp at puck.nether.net
Subject: [nsp] Bridging?

Hello guys,

I am trying to do something without even knowing whether it's possible or
not (all I have is a vague promise of a sales guy a few months ago :-).

The set-up is as follows:
 Cisco 3640 with VWIC-2MFT-E1 <----E1 link---> E1/Eth Bridge <----> Ethernet

So what I am trying to do is to turn the E1 interface on the Cisco (or, more
exactly, Serial0/0:0)  into an ethernet host on a remote (i.e. beyond the E1
link) network.


I see problems already like: what will be the MAC address of serial0/0:0 on
the ethernet network? I have seen a "mac-address" command in int.
configuration mode; but before jumping in this I thought I would ask the
ones who know...


1.	Is what I am trying to do completely irrealistic or not?
2.	If no, what commands do I need on the cisco?

Note: on the bridge I can configure either PPP or HDLC; but none of them
could succeed to bring the line protocol up on the cisco side (can produce
the debugs if that helps).


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