[132028] in North American Network Operators' Group
Re: Ciscos, BGP, L2TPV3 pseudowires and loopback IPs
daemon@ATHENA.MIT.EDU (James Smallacombe)
Thu Nov 11 13:50:28 2010
Date: Thu, 11 Nov 2010 13:50:23 -0500 (EST)
From: James Smallacombe <up@3.am>
To: Dave Temkin <davet1@gmail.com>
In-Reply-To: <4CDB0FE7.6050901@gmail.com>
Cc: nanog@nanog.org, David Freedman <david.freedman@uk.clara.net>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Wed, 10 Nov 2010, Dave Temkin wrote:
> From a VZ IP circuit that I have:
>
> interface Loopback0
> ip address x.x.x.x 255.255.255.255 (actual assigned mask is 255.255.255.252)
>
> interface Serial0/0/0
> bandwidth 1536
> ip unnumbered Loopback0
>
> ip route 0.0.0.0 0.0.0.0 Serial0/0/0
>
> Works great for me across ~50 sites.
Apparently, cisco will not allow this to be done on an Ethernet interface,
even if it is acting as a WAN interface. You get this:
Point-to-point (non-multi-access) interfaces only
James Smallacombe PlantageNet, Inc. CEO and Janitor
up@3.am http://3.am
=========================================================================
