[ppml] Draft 2 of proposal for ip assignment with sponsorship
forrest at almighty.c64.org
Fri Feb 28 09:27:56 EST 2003
On Thu, 27 Feb 2003, Alec H. Peterson wrote:
> --On Thursday, February 27, 2003 4:41 PM -0800 william at elan.net wrote:
> > I have not missed this point, in fact I already made a draft available in
> > separate email to this list for proposal that would require ARIN to make
> > micro-assignments from specific class-A and in fact to try to keep size
> > of assignments about the same for each /8 ARIN has and make information
> > about this size of smallest announement for each /8 publicly available
> > (to be fair they already provide this information on website even now).
> > I also argued before against what are otherwise fairly good proposals
> > 2002-5 and 2002-6 on the grounds that they do not include provision that
> > when changing to smaller size block then /20 ISPs must get allocated
> > space from /8 block here other micro-allocations are also being made and
> > where ISPs do not filter it on /20 boundary.
> But regardless of where the allocations come from, there will still be lots
> of allocations that cannot be summarized that otherwise could be summarized.
If you get a /24 from one of your upstreams, your /24 is part of your
ISP's larger aggregate. The people arguing routing table explosion caused
by a micro allocation policy seem to take the stance that they can filter
your /24 from your ISP's aggregate and you'll be fine because they'll
still have a route to you via that aggregate. If you receive a micro
allocation they will no longer be able to filter your /24.
If you filter my /24 from my provider's aggregate, what exactly is the
point of me multihoming? If I lose connectivity with that upstream,
you'll no longer be able to reach me because you won't hear my /24
announcement from my other upstream. To me, it doesn't seem acceptable
to filter out multihoming /24's at all. Creating a micro allocation
policy would seem to address this issue. Create a block of addresses that
/24's won't get filtered from, while still allowing everyone to filter out
the garbage more specific /24's from elsewhere.
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