On Wed, Sep 01, 2004 at 03:12:53PM +0100, Colm MacCarthaigh wrote:
> That refers to dial-up, which by is not always-on. The problem there
> being that with static allocations, an ISP would require an IP per
> customer. With dynamic allocations, an ISP would require an IP per
> [max-ever-dial-in-at-once + saftey-mumble ], so clearly there is a
> saving in real terms.
>> With ADSL, which is designed to be always-on, this saving does not
> exist. Or at least exists only to the extent that a proportion of
> customers may not actually leave their modems always on. Is this
> typically a high proportion?
Not neccessarily. We typically see that at any given point about
20% of our customers are not connected - this is for varying reasons,
and we're not a home ISP. A home ISP will probably see even
larger amounts not connected - especially in environments where
it's only one Windows PC with a USB modem plugged in.
> Not that residential customers should get static assignments mind
> you, I can't imagine the horror of them dealing with whois abuse
> reports ;)
Ripe procedures do not require you to log individual entries in the
RIPE DB for each /32 that is assigned.
Typically an ISP will apply for a block of IPs based on what they
expect to sell, and indicate to RIPE if that covers static or dynamic
allocations,
Thomas
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