OK, so how hard was it to deploy?
Went quite smoothly.  We had Ivan’s configs that had
worked with Calren mockup.  Ben Eater of Juniper gave
lots of help, but we mocked up ourselves in our lab.
Main issue was what to do about the dual peering issue.
Since we bgp with everyone except 2 downtown offices,
decided to simplify to make everyone same.  One went
away and Ucaid/dc converting soon.  Lots would be prob
Basically, we turned on new VRF, ran for awhile, no
issues, then turned on Qwest peering & new custs.
Did cheat and keep existing inet.0:  Juniper recommends
doing everything as VRFs.  Better but nasty cutover.