[nsp] Methods for Non-BGP multihoming

[Elliott, Andrew]

>The best solution considering the requirements is to run BGP with private 
>AS numbers to your ISP's and have them remove them in the advertisements.  
>That way you can have control on outbound/inbound traffic but don't need 
>an ASN.

If you are multihomed, most ISPs will not allow you to use a private AS, as
that will result in inconsistent originations for the prefix.

If you are going to use BGP in a multihomed situation, you will want to have
your own AS.

-andrew