Hi Experts

I need your suggestions for the best design for the following scenario: it's a 
customer has a public AS and MPLS network, connected to upstream provider 
through two links in two differnt POP's. The customer receives the default 
route and few prefixes only from the provider from both POP's. The key here is 
that the customer needs certain subnets to follow the default route coming from 
POP1 in the upstream, the downstream must be through the same POP1. Other 
subnets should follow the default route coming from POP2 in the upstream, the 
downstream must also be through the same POP2. My question here is not in the 
downstream as it's easy to adjust through BGP attributes and prefix length, but 
it's in the upstream direction to the internet. how I can gaurantee that 
certain prefixes follows the default route through one POP will be back from 
the same POP? I was thinking about splitting customer traffic into two VRF's 
and inject default routes with different prefernces. do you think!
  it's the best or you have another susggestion? The customer has no other 
provider.

Best Regards,
Walaa Abdel Razzak
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