Dual DHCP on one network
Posted on 2011-09-14
Have an issue here where some machines are not getting the proper DNS servers.
I have a windows 2003 server setup on our network that handles the DHCP duties ... so everyone that logs on gets the iP and DNS servers (192.168.123.xxx).
We have a contractor here that sets up a subnet (10.135.6.xxx) for his PLC programming.
Everything works OK if he isn't connected to my network. When he runs a line from his router to a switch on my network, we have some (just a few) users that will pick up the IP from my DHCP server, but the DNS servers from his router ...
Is there an expklanation for why this happens? How can we make sure that the DNS servers are picked up from my DHCP server?