Ciscos, BGP, L2TPV3 pseudowires and loopback Ips

David Freedman david.freedman at
Wed Nov 10 18:34:48 CST 2010

>>  interface WAN1 (actually a gigether)
>>   ip unnumbered loopback0  (or no ip addr?)

>That's not correct.

Actually, was fixating on the fact that he has ethernet WAN and last I
checked IOS doesn't have unnumbered-to-ethernet capability (well not true,
recently they introduced unnumbered SVI support, don't know if it actually
works on anything else)



David Freedman
Group Network Engineering

david.freedman at
Tel +44 (0) 20 7685 8000

Claranet Group
21 Southampton Row
London - WC1B 5HA - UK

Company Registration: 3152737 - Place of registration: England

All the information contained within this electronic message from Claranet
Ltd is covered by the disclaimer at

More information about the NANOG mailing list