Windows Server 2003 forced to DHCP

56,510 pts.
Tags:
DHCP
IP configuration
Windows Server 2003
Workstations
Does anyone know a way to force a workstation to use a specific DHCP server ? We have a windows server 2003 has DHCP active as well as our phone system. The problem is there are workstations getting there ip info from the phone system and not the server.

Software/Hardware used:
Windows Server 2003, DHCP
ASKED: December 4, 2009  3:11 PM
UPDATED: September 11, 2012  4:02 PM

Answer Wiki

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What you are seeing is DHCP behavior by design. DHCP is a broadcast protocol. So, if there are two DHCP servers on the same subnet, they both can and will hand out addresses for that subnet. You can address this by using VLANs and segregating phones from the client computers. There really should only be one DHCP server on a network unless there is a backup capable of handing out a different subnet. For our network we have a local DHCP server at each site and then a single secondary remote server at a hub site. The secondary server hands out a different subnet to clients than the local DHCP server. This configuration is different though when VLAN’s are in place. The secondary server hands out the same address ranges as the local server but has to be sure to check if the address exists before assignment. This is a configuration setting in the Windows DHCP server settings.

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  • ITKE
    [...] See the original post here: Windows Server 2003 forced to DHCP [...]
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  • Axeplaya
    Also check the options that are configured on your phones If everything initially boots up in one VLAN, the options on your phones will allow the phones to boot in the initial vlan, request and release an ip address, jump to the correct vlan and get the correct ip address, phone book, and dial tone. Check with your pbx vendor for the phone options
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