ARIN allocating /20 netblocks?
Patrick W. Gilmore
patrick at priori.net
Fri May 15 19:46:54 UTC 1998
At 12:36 PM 5/15/98 PDT, Mark D. Nagel wrote:
>One of our customers was recently allocated a /20 netblock from ARIN.
>I had just been ass-u-ming it was a /19 until I cross-checked our
>announcement update with the request from the customer. Is this a
>change in policy (I thought they only allocated /19 or bigger) or did
>I miss something? If the former, are NSPs like Sprint planning to
>update filters to route these new smaller blocks?
Check the ARIN page, http://www.arin.net/initial-isp.html.
Essentially, ARIN allocates a /21 or /20 of a "Reserved" /19. When our
downstream got a /19 from ARIN, he announced the full /19 to defeat the
Draconian Sprint 112 filters and copy-cats.
Check with your downstream. They probably have a reserved /19 they can
announce.
And, of course, double-check with ARIN as this isn't my customer we're
talking about. ;)
>Mark D. Nagel <nagel at intelenet.net>, CCIE #3177
TTFN,
patrick
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Patrick W. Gilmore voice: +1-650-482-2840
Director of Operations, CCIE #2983 fax: +1-650-482-2844
PRIORI NETWORKS, INC. http://www.priori.net
"Tomorrow's Performance.... Today"
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