[c-nsp] Internet in VRF

[Mike]

Hi,

     I'd like to ask for the collective opinion on routing in service 
provider network serving broadband subscribers:

     I have an ASR1k and will be terminating PPPoE broadband subscribers 
here. I'll also be terminating my primay internet feed (BGP) here, and I 
the future I will have 3 providers and will be multihomed. I also will 
have some MPLS vpns for certain customers.

     I think I want to have my default routing table carry mostly 
loopbacks and direct interface connected routes, while I want to stuff 
everything else into VRF's. Those other VRF's are likely to be Internet 
(full tables), Subscribers (all the /32's for PPPoE subscribers), and 
the odd vrf for any mpls vpn customers.  The challenge is that - I think 
- I would want to only leak a default route into any other non-Internet 
VRF that requires shared service access to it, which should keep the 
table sizes down. My question is, does this sound reasonable? Is there 
any reason I wouldn't want to set things up this way?

Mike-