DHCP static leases

[Glenn Satchell]

Hi Brandon

I can think of two different solutions hare.

1. Give your printers a new IP address so that all the fixed-address
hosts are grouped together outside the dynamic range?

2. Give them a really *long* lease time, like one or more years. Could
either use a class/sub-class or group, eg:

# printers
group {
	min-lease-time 31536000;	# one year
	host foo { hardware ethernet ...; }
}

or

class "printers" {
	match hardware;
	min-lease-time 31536000;	# one year
}
subclass "printers" 1:8:0:2b:4c:39:ad;

See the section in the dhcpd.conf man page titled SUBCLASSING.

regards,
-glenn
> 
> On Mon, Jan 26, 2009 at 9:58 PM, Brandon Munger <bmunger at edison.edu> wrote:
> 
> > Yes, it is defined as a host declaration with the fixed-address.
> > How are reserved leases defined?  Can it be defined in the host
> > declaration area?  Thank you.
> >
> > Brandon
> >
> >
> > Simon Hobson wrote:
> >
> >> Brandon Munger wrote:
> >>
> >>  Yes those static leases are in the range.  We use this for IP printers so
> >>> what we normally
> >>> do is turn the printer on, let it get an IP address, then go into the
> >>> dhcpd.conf and add
> >>> that as a static address.
> >>>
> >>
> >> I assume by "static lease" you mean "host declaration with fixed address"
> >> ?
> >>
> >> If that is the case then you MUST NOT have the static address included in
> >> any dynamic range<period>
> >>
> >> If you have the address in a dynamic range then you are telling the server
> >> that the address is available for leasing to clients, so it does just that.
> >> I think version 4 introduces a facility for reserved leases - so you could
> >> continue dynamically allocating addresses, and then simply set the lease to
> >> reserved so it cannot be given to any other client.
> >>
> >>
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> 
> 
> -- 
> Thanks & Regards
> SAmer SAyeed