I've got a customer terminating a McLead and a Sprint DS3 on a single 7507. I'm preparing to break this up into two border routers and I'm a little puzzled by the choice to force router ID to be the IP address of the customer's side of the McLeod DS3. The machine didn't have a loopback when I found it and the configuration shows a lot of BGP book learning and what looks like not much hands on. Is this a requirement for the McLeod side to behave properly? I think not but I'd like to hear it from @mcleod.net - this customer is very finicky and I don't want any 'excitement' during the transition. router bgp 8675309 no synchronization bgp router-id x.y.z.10 neighbor x.y.z.9 remote-as 7228 interface ATM6/1/0.1 point-to-point description Internet PVC to McLeod ip address x.y.z.10 255.255.255.252 -- mailto:Neal@Layer3Arts.com // IM:layer3arts voice: 402 408 5951 cell : 402 301 9555 fax : 402 408 6902