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North American Network Operators Group

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Re: standards for giving out blocks of IP addresses

  • From: Kevin Loch
  • Date: Tue Jun 12 17:38:04 2001

Valdis.Kletnieks@vt.edu wrote:
> 
> On Tue, 12 Jun 2001 16:17:01 EDT, shsu@HydroOne.com  said:
> > Hi, is there a standard or a practice on how much IP addresses an ISP should
> > provide to his/her client given that this client has bought only 2Mb of
> > bandwidth and this client is an ISP?
> 
> Umm.. don't bother.  Let's think this through.  2Mbits/sec of bandwidth
> will only sustain about 40 56KB modems doing a simultaneous download.
> 
> Even adding in think time and the like, a /24 should be plenty wide enough.
> 

Of course bandwidth != subnet mask.   He should give them whatever IP's
they demonstrate a need for in the next three months.  Determining and
justifying that
need has nothing to do with how over (or under) subscribed their
bandwidth is.

If they are in fact only selling dialup (not leased lines, not web
hosting),
you might ask how many pops(locations) they plan to have right away,
modems/pop, space
reserved for internal devices (email/corporate lan) and links.  You
could
easially justify a couple of /24's with a couple locations and IP's for
all the new PC's in the marketing dept.

KL




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