BGP multihoming question.

Jack Bates jbates at
Thu Dec 9 09:13:43 CST 2010

On 12/9/2010 5:32 AM, b2 wrote:
> Hi , first sorry for lame question but i'm new to BGP.
> In my ISP I have two full BGP sessions with my two transit providers (X
> and Y), and for every provider i have assigned PA (Provider
> Aggregatable) networks. Is it possible (if there are no filters on other
> side) to advertise X networks to Y and Y to accept them ? My confusion
> comes from the PA status , i know if it is PI there are no problem to
> route it to any AS.
> Thanks.

If it's SWIP'd to you by your provider, it is yours to use, and most 
providers will accept it. The difference between them is paperwork; 
that's all.


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