Mapping a MAC to an IP...

Todd Snyder tsnyder at
Wed Jan 21 15:51:48 UTC 2009

My understanding is that you have to "break" the range to add host

This, to me, is the biggest pain I have with DHCP in a a production
environment.  What could be a nice general range declaration, with some
hosts entries turns into a bunch of broken up and hard to dissect range
declarations with hosts declarations sprinkled throughout.  for 5
entries, it's no biggie, but when putting in 50 or 60 hosts into a /24
there are a lot of lines. Multiply that by a few /24's and maintenance
gets to be quite difficult at times.


-----Original Message-----
From: dhcp-users-bounces at
[mailto:dhcp-users-bounces at] On Behalf Of Peter Laws
Sent: Wednesday, January 21, 2009 10:44 AM
To: dhcp-users at
Subject: Re: Mapping a MAC to an IP...

Bill Campbell wrote:

> You need host entries in the dhcpd.conf file, something like:
> host {
> 	hardware ethernet 00:c0:f0:4b:cf:fb;
> 	fixed-address;
> }

Hey, speaking of that ... do I need to "break" the range in which a
IP" resides?   I've been doing this type of thing within a 'subnet' 
container, but wonder if there is a better or more expected way of doing
that.  Or do I even have to bother?


  host gumshoe. { hardware ethernet 00:00:00:xx:xx:xx; fixed-address; }


Peter Laws / N5UWY
National Weather Center / Network Operations Center
University of Oklahoma Information Technology
plaws at
Feedback? Contact my director, Craig Cochell, craigc at Thank you!
dhcp-users mailing list
dhcp-users at

This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful.

More information about the dhcp-users mailing list