From: Mark Lewis (mark@mjlnet.com)
Date: Thu Jan 12 2006 - 06:34:04 GMT-3
Hi,
I think someone may have already mentioned that one possibility is L2TPv3. Here's a sample config (assuming that your routers will support L2TPv3)- it's pretty simple:
!
! On R1
!
l2tp-class Class.To.R3
digest secret cisco hash sha
!
pseudowire-class PW.To.R3
encapsulation l2tpv3
protocol l2tpv3 Class.To.R3
ip local interface Loopback0
!
interface Ethernet0
xconnect <loopback ip on R3> 1001 pw-class PW.To.R3
!
!
! On R3
!
l2tp-class Class.To.R1
digest secret cisco hash sha
!
pseudowire-class PW.To.R1
encapsulation l2tpv3
protocol l2tpv3 Class.To.R1
ip local interface Loopback0
!
!
interface Ethernet1
xconnect <loopback ip on R1> 1001 pw-class PW.To.R1
!
If you really wanted to (and your routers supported it), you could even deploy an AToM pseudowire over a GRE tunnel (I am assuming that MPLS is not running between R1 and R3)!! But something like L2TPv3 is probably your best bet.
HTH,
Mark
CCIE#6280 / CCSI#21051 / JNCIS / etc.
Author:
www.ciscopress.com/title/1587051796
www.ciscopress.com/title/1587051044
>From: "Victor Cappuccio" <cvictor@protokolgroup.com>
>Reply-To: "Victor Cappuccio" <cvictor@protokolgroup.com>
>To: "'Kenneth Wygand'" <KWygand@customonline.com>, <ccielab@groupstudy.com>
>Subject: RE: Running Layer-2 across Layer-3
>Date: Wed, 11 Jan 2006 13:54:39 -0400
>
>I think that IRB / CBR could be an option:
>
>http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cr/hbr_r/
>br_a1h.htm#wp1067019
>
>http://www.netcraftsmen.net/welcher/papers/irb.htm
>
>Saludos,
>Victor.
>
>-----Mensaje original-----
>De: nobody@groupstudy.com [mailto:nobody@groupstudy.com] En nombre de
>Kenneth Wygand
>Enviado el: miircoles, 11 de enero de 2006 12:11
>Para: ccielab@groupstudy.com
>Asunto: Running Layer-2 across Layer-3
>
>Hello everyone,
>
>
>
>I have the following scenario:
>
>
>
>(E0)R1(E1)<---->(E0)R2(E1)<---->(E0)R3(E1)
>
>
>
>Layer 3 links everywhere. The requirement is to provide layer-2 services
>for a non-routable protocol (unnamed) from R1's E0 interface to R3's E1
>interface.
>
>
>
>Any suggestions on how this can be accomplished?
>
>
>Thanks in advance,
>
>Ken
>
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