what is a suitable scope for isc dhcp?

Simon Hobson dhcp1 at thehobsons.co.uk
Mon Jun 28 07:09:27 UTC 2010

Julie Xu wrote:

>if I need list 30,000 host statement, is dhcpd will crash? or some 
>perfermance isse? ( I mean using unix or linux box).

I don't know about that, but I do know some people are running very 
large installations (I vaguely recall someone is serving in excess of 
200k clients). Performance is usually limited by IO, so even a modest 
processor will cope as long as the IO (mostly disk) can keep up. 
There are some tunings that can improve things.

>if possible isc dhcpd can work with database? or if possible can 
>seperate host statements from dhcpd.conf file as an extended file?

Yes, you can use include files so your hand built dhcpd.conf can 
include a separate file which you can build from a database.

Perhaps you could elaborate on what you want to achieve, 30k host 
statements may not be the best way to do things.

Simon Hobson

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