Ciscos, BGP, L2TPV3 pseudowires and loopback IPs

James Smallacombe up at
Thu Nov 11 12:50:23 CST 2010

On Wed, 10 Nov 2010, Dave Temkin wrote:

> From a VZ IP circuit that I have:
> interface Loopback0
> ip address x.x.x.x  (actual assigned mask is
> interface Serial0/0/0
> bandwidth 1536
> ip unnumbered Loopback0
> ip route 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 at	

More information about the NANOG mailing list