ARIN IP allocation questionn
David Schwartz
davids at webmaster.com
Thu Jun 27 08:56:26 UTC 2002
>My *personal* opinion is that wise ISPs only punt customers to ARIN once
>they reach the point where they can, in fact, have a normal ARIN netblock
>assigned directly to them (currently a /20, unless I slept through another
>change...)
The guidelines have a strong preference for singly-homed networks to use IP
address space allocated to them from their upstreams. I can think of no
logical reason* an ISP would prefer their customers to go to ARIN rather than
deal with them. The global routing table is better off for it as well, as the
customer's /20 would be a new route, rather than being included in their
provider's presumably larger block.
On the other hand, I can think of many reasons a customer would prefer to
deal with ARIN than their upstream, assuming the meager cost wasn't a factor
and they don't mind polluting the global table a tad. Of course, that's not
really an operational issue.
DS
* The only reason I could possibly think of is if the ISP is afraid that the
large allocation will impact their future allocations because they don't have
the confidence or competence to extract a proper justification from their
customer and present/defend that justification to ARIN when their next
allocation comes up. But this wasn't the reason you were thinking of, right?
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