option "fixed-address" limitations

perl-list perl-list at network1.net
Fri Feb 22 13:54:44 UTC 2019

We have a system that has 25 thousand+ fixed addresses. There are no issues with it. 200 should be absolutely no problem on a low end modern server (somewhat recent (~2008) xeon or equivalent + 4GB RAM) as we are serving the 25 thousand+ off of this type of server. 

> From: "Niall O'Reilly" <niall.oreilly at ucd.ie>
> To: "Users of ISC DHCP" <dhcp-users at lists.isc.org>
> Sent: Friday, February 22, 2019 6:23:26 AM
> Subject: Re: option "fixed-address" limitations

> On 22 Feb 2019, at 8:57, a-plant wrote:

> > I have a problem: I have to list about 200 hosts with a fixed IP
> > address.
> > Are there any limitations on the number of hosts that can be listed
> > with the "fixed-address" clause?

> Practically, no.

> Strictly, everything is limited by available system resources.

> I have a fuzzy memory of a stage in migrating from BOOTP to DHCP
> before introducing the use of pools, when there were thousands
> of fixed-address host declarations in the configuration.

> Best regards,

> Niall O'Reilly
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