[75877] in North American Network Operators' Group
Re: BBC does IPv6 ;) (Was: large multi-site enterprises and PI
daemon@ATHENA.MIT.EDU (Fred Baker)
Sat Nov 27 01:11:57 2004
Date: Fri, 26 Nov 2004 22:09:07 -0800
To: Owen DeLong <owen@delong.com>
From: Fred Baker <fred@cisco.com>
Cc: "Ryan O'Connell" <ryan-nanog@complicity.co.uk>,
Jeroen Massar <jeroen@unfix.org>, nanog@merit.edu
In-Reply-To: <2147483647.1101425462@imac-en0.delong.sj.ca.us>
Errors-To: owner-nanog-outgoing@merit.edu
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At 11:31 PM 11/25/04 -0800, Owen DeLong wrote:
>I think the policy _SHOULD_ make provisions for end sites and
>circumstances like this, but, currently, I believe it _DOES NOT_ make such
>a provision.
I understand the policy in the same way. That said, I believe that the
policy is wrong.
IMHO, the rules that qualify someone for an AS number should qualify them
for a prefix. It need not be a truly long prefix, but larger than a /48.
My logic is this. We grant someone an AS number not because we think they
are an ISP, but because we believe that they are sufficiently well
connected that using BGP to advertise their routing is necessary, and
running BGP to a number of neighbors implies an AS number. Well, if you are
sufficiently well-connected to need to advertise your routing in BGP,
ingress policing is going to materially hurt you in your use of said
multiple ISPs. You want an address that you can safely originate from, and
you want to be able to use routing to multihome in the other direction.
Note that this isn't an argument that all multi-homing should be done using
provider-independent addressing. This is an argument that some should.
Multihoming for outfits that don't qualify for an AS number still looks for
a solution that is implementable by mortals and uses provider-dependent
addresses.
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