2 DHCP sources over one switch

[Jeroen1000]

I should have known I'd make mayhem lol. So I've got a cable modem (for my digital tv) and a ADSL-modem (for the computers) handing out DHCP.

Since they hand out addresses from different subnets this causes mayhem.
As far as I know, I can't set a fixed address in the cable box. My computers obviously have one so you may say "shut down one DHCP server". But then I got an idea. Can VLANS solve this little issue?

 

[thiggins]

Yes. The problem you're seeing is DHCP uses network broadcasts, which are passed to all switch ports. VLANs limit broadcasts to within each VLAN.

 

[Jeroen1000]

If only I weren't cheap and had bought 2 VLAN capable switches Thanks for clearing this up.