Re: [isp-bgp] IX core - public or private ASN?

[Pete Templin <petelists@...>]

Aliaga, Luis Carlos - (Per) wrote:
>  
> I'm Luis form Peru and i'm writing to the list regarding the
> implementation of a new arquitecture for the Peruvian IX. We're going to
> implement a two-router core running iBGP peering with each of the ISP's
> routers (e-bgp), so we are discussing the advantajes and disadvantages
> of using a private or public ASN for the IX's core. 
What's the topology?  If it's switched, you may want to consider route 
servers rather than routers, as many of the route server software tools 
allow the ability to hide their own AS, in which case private or public 
ASN won't make much difference.  If it's routed, I'd lean toward public 
ASN since it'll be visible in the AS path, or consider whether it'd be 
better to simply route between the subnets and let the participants peer 
with each other.  Adding to the AS path length may cause networks to 
de-prefer your IX without copious tuning.

pt





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