moving subnet to another server

[Bob Harold]

Be sure that both DHCP servers are set "not authoritative;" for this
subnet.  If they are set to "authoritative;" then they will tell the client
that there is no IP available.



-- 
Bob Harold
hostmaster, UMnet, ITcom
Information and Technology Services (ITS)
rharolde at umich.edu
734-647-6524 desk

On Thu, Jan 22, 2015 at 6:35 AM, Simon Hobson <dhcp1 at thehobsons.co.uk>
wrote:

> Dana Huggard <dana.huggard at cohodata.com> wrote:
>
> > So something  like this
> >
> > class "select-hosts" {
> >         match if (substring(option host-name,0,23) = "select-hosts");
> > }
>
> That would work.
> If you want per-device control, have you considered doing it by MAC
> address ? See the section in man dhcpd.conf on subclasses.
>
> > subnet 10.x.x.x netmask 255.255.192.0 {
> >        option routers 10.x.x.x;
> >        option nis-servers 10.x.x.x;
> >        option domain-name-servers ns.sub.domain.name;
> >
> >        pool {
> >                 allow members of "select-hosts"
> >                 range 10.x.x.x 10.x.x.x;
> >        }
> > }
> >
> > What I'd like to ask the list is does anyone know;
> >   1. If the select clients get denied on the other dhcp servers, will
> they find this one?
>
> They should do if everything is working.
>
> >   2. when one of the non-select clients tries here and is not allowed,
> will they give up or find the other dhcp servers?
>
> They should keep trying until they find a server to give them a lease
>
> >   3. Am I sane?
>
> Are any of us ! It seems a reasonable way to go - just make sure that the
> ranges are distinct and non-overlapping or you'll get "confusion".
>
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