Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

Professional Opinions
Ask a Question
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

troubleshooting Question

Problems with Virtual machine and DHCP

Avatar of mbudman
mbudmanFlag for Canada asked on
Windows Server 2003Microsoft Forefront ISA ServerVMware
7 Comments1 Solution886 ViewsLast Modified:

Our network consists of a two DHCP servers in a Windows 2003 Active directory network. The DC's are also the DNS servers and DHCP servers.

We also have several developers running virtual machines (VMWARE).

Employees are allowed to VPN into the network (firewall is ISA server 2006). The ISA server assigns the VPN clients an ip address from the DHCP servers. All this is automatic and it works.

The problem:

The virtual machine gets assigned an dynamic ip address (from DHCP server). When a VPN client connects, it can also get assigned the same ip address. It is the same DHCP server that is assigning the ip addresses.

It appears that the virtual machine is the culprit. The DHCP server does not realize it has assigned a used ip address to the VM machine.


The virtual machine is up and running; it can be pinged and is network aware; it sees all machines on the network and is part of the domain.

A user connects to the network from home via VPN client. The computer is assigned the same ip address (via DHCP) as the virtual machine. The remote computer cannot communicate on the network.

Any suggestions? This is a serious problem and a big headach to resolve.

Thanks in advance.

Avatar of coolsport00
This problem has been solved!
Unlock 1 Answer and 7 Comments.
See Answers