Find out if >1 dhcp server on small network

Associate
Joined
18 Oct 2002
Posts
1,689
Location
North West England
Hi,

I set up a network for a small business a few years ago, based around a Draytek Vigor 2820 wireless router. They have about 15 client PCs, plus various iphones / blackberry's etc, a nework printer, and some VOIP phones. So, say 50 devices in total connected using either cable or wifi.

They've started seeing issues where laptops won't connect to the network over cable or wifi (the router doesn't give out an IP address to the device). Rebooting the router tends to fix this, but obviously isn't very practical.

I've been told that people have been getting IP address conflict warnings in Windows occasionally.

I'm wondering if there's another device other than the router on the network that's trying to hand out IP addresses. If two DHCP servers exist on the same small network in the same IP range, I assume they will conflict with eachother ? Would the symptom be on some occasions no IP address being given and on others, and IP being duplicated?

Finally, does anyone know a simple way to test for the existance of more than one DHCP server on a network?

Thanks in advance :)
 
Back
Top Bottom