performance with 20000 classes; release a lease manually

David W. Hankins dhankins at
Wed Jun 10 21:36:46 UTC 2009

On Wed, Jun 10, 2009 at 10:48:48PM +0200, stefan novak wrote:
> At the end of my post is a sample of my config as it is now.
> I dont think that i can use subclasses, because i want to have fixed
> ip adresses based on the cable modem mac.

There are many ways to peel an orange.  You may want to investigate
spawning subclasses with lease limits rather than specifically
allocating a specific pool for every customer (one pool with many
subclasses versus many classes and many pools).

The DHCPv6 software allows a host record (with a fixed address for
example) to be matched based on an arbitrarily supplied option field
name and contents.  This is not currently, but could trivially be
extended to the DHCPv4 routines.

David W. Hankins	"If you don't do it right the first time,
Software Engineer		     you'll just have to do it again."
Internet Systems Consortium, Inc.		-- Jack T. Hankins
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