[DHCP] RE: Determining request

[Jonathan Lassoff]

Excerpts from Tim Gavin's message of Wed Jan 06 10:19:42 -0800 2010:
> Wow, this thread got big while I slept :)
> 
> I'm doing something similar (different physical networks using one
> DHCP server) and am using separate vlans.  I was going to give you my
> config, but since you're using a Red Hat based system, and I'm using
> Debian, it won't do you much good.  RedHat is pretty easy to do
> though, IIRC.  As another poster mentioned, you could also use two
> NICs.
> 
> You mentioned using SMB shares.  My microsoft-fu is pretty rusty, but
> IIRC, you can use your WINS server to advertise between separate
> subnets.  Might wanna look that up and see if I'm right about that, as
> the DHCP part gets a LOT less complicated if you can use separate
> subnets.  Also, your Linux box will work quite well as a router, you
> don't have to do inter-vlan routing at your switch.

I believe Tim is correct here, you can set a DHCP option to advertise a
WINS server that will have to point at something that can do name
resolution for your Windows clients.  This way, you can make your
Windows hosts use unicast IP to resolve names and talk to each other
instead of subnet-local broadcast UDP.

Admittedly, this is a lot of extra stuff to setup to solve the problem
of separating wired from wireless clients. To me, it seems worth it in
the long run if you ever want to extend your network out to other sites
or organizations.

--j