ARIN allocating /20 netblocks?
Brett Frankenberger
brettf at netcom.com
Sat May 16 20:49:55 UTC 1998
:: Jon Lewis writes ::
>
> The change made it possible for many "small" ISPs to truely multihome.
> FDT is one of them. When I found out about "the change", I was about to
> renumber FDT into Digex address space, since we did not qualify under the
> old rules for an ARIN CIDR block (immediately fill 80% of a /19). The
> /20 Digex was going to give us was in filtered space, meaning anyone
> filtering BGP like Sprint would not see our advertisements and would only
> have reached us through Digex...making our additional T1's to the net
> somewhat pointless.
Really? What is their new policy? Suppose you can only fill 60% of a
/19 ... do they give you a /20 (with permission to announce the /19)
and force you to use provider space for the other 819.2 addresses that
you need? My point is this: 100% of a /20 is 50% of a /19 ... so if
you justify need for more than 50% of a /19, that should be
jutification for a /19. (less than 50% of a /19 could be satisfied by a
/20). (and likewise for other sizes, both larger and smaller than /19).
Does ARIN not see it that way?
- Brett (brettf at netcom.com)
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