[34548] in North American Network Operators' Group
Re: BGP Question - how do work around pigheaded ISPs
daemon@ATHENA.MIT.EDU (Stephen Griffin)
Sat Feb 10 20:41:05 2001
Message-Id: <200102110136.UAA13601@elektra.ultra.net>
In-Reply-To: <20010210074103.B21507@pentics.com> from "Craig A. Huegen" at "Feb 10, 2001 07:41:03 am"
To: chuegen@pentics.com (Craig A. Huegen)
Date: Sat, 10 Feb 2001 20:36:39 -0500 (EST)
From: Stephen Griffin <stephen.griffin@rcn.com>
Cc: nanog@merit.edu
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In the referenced message, Craig A. Huegen said:
>
> On Sat, Feb 10, 2001 at 06:53:41AM -0800, Randy Bush wrote:
> ==>
> ==>>> Return the 172.16.0.0/16 block to the registry (ARIN, APNIC, RIPE or if
> ==>>> no one else IANA) and apply for multiple appropriately sized CIDR blocks
> ==>>> under the current registry allocation guidelines.
> ==>> While I fully agree with this approach to deal with the issues mentioned,
> ==>> it will only exhaust the new address space more quickly. Why should we
> ==>> give up on 128/2?
> ==>
> ==>because when the registries have different allocation policies in 128/2,
> ==>the isps will follow. just as we did in old A space.
>
> That doesn't address the point -- the point is that these ISP's are forcing
> the exchange of these blocks for new, previously unallocated space, and
> leaving holes in the old 128/2 space. These ISP's are massively
> contributing to the depletion of immediately available address space.
Returning a /16 which the organization is not entirely using for a smaller
block seems to be anything other than depletion. Perhaps I've misread
Dani's original message, but it appeared that the /16 is not being
completely used.
> Why not adopt a reasonable policy to accept up to /20's or up to /19's in
> the old B space so that organizations who already have these blocks can
> use them?
Most people who filter feel that filtering on registry boundaries is
reasonable. There are people who feel that their version of reasonable
is more reasonable. What makes /32 less reasonable than /20? If one
filters on registry boundaries, the only time you don't have access to
an entity is when they are not announcing the allocation they have been
assigned.
> /cah
