nanog mailing list archives

Re: Ciscos, BGP, L2TPV3 pseudowires and loopback IPs


From: Jack Bates <jbates () brightok net>
Date: Thu, 11 Nov 2010 13:08:41 -0600

On 11/11/2010 12:50 PM, James Smallacombe wrote:

Point-to-point (non-multi-access) interfaces only


Yeah, it's evil. I don't see a cisco equiv to state it's point to point (you can tell ISIS it is, but not define the interface as such). However, I'm not sure of the limitations or associated problems, you might try:

FastEthernet0/0.1
 encap dot1q 1 native
 ip unnumbered loopback1
!

Haven't tested it, but it utilizes the access code in IOS for subscriber management using vlans. As long as you have a route pointing out the interface, it will allow the traffic to go through.


Jack


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