Exclude NIC from DHCP Server

daveginorge · 05-28-2009, 05:28 AM

Hi All

I have a dhcp server with 1 wan NIC & 2 lan NICs and 2 subnets and all works well.

I would like to add a 3rd lan NIC on a new subnet but NOT have the dhcp server allocate addresses.

If I add the NIC but make no entries in the dhcpd.conf file for that subnet will the dchp server exclude it?

This subnet has it's own dhcp server (not in our control) but will be routed through the linux box.

bathory · 05-28-2009, 05:54 AM

I think that you should better specify in the dhcpd startup options the interfaces on which it should listen for requests, so it does not messes with the other dhcpd server, even though there is nothing in dhcpd.conf for that subnet.

Regards

david1941 · 05-28-2009, 06:13 AM

I have an interface that I want nothing done on and I just put an empty sebnet declaration in dhcpd.conf like this:

Code:

subnet xx.xxx.xx.40 netmask 255.255.255.248 { }  # Nothing to do here

and it ignores it.

Dave