My physical host machine runs windows server 2012 R2 with a DHCP server.
I have the following topology in GNS3:
- Windows Server is the physical machine, it is connected to both VMNet 2 and VMNet 3 networks.
- Windows 7 is a Virtual Machine running Windows 7 with a NIC plugged in VMNet 3.
- R1 is a Layer 3 cisco switch: f1/0 is assigned to vlan 9 and f1/15 is assigned to vlan 10
The problem is whenever the Windows 7 machine issues a DHCP discover it gets broadcasted in both VMNET 2 and VMNET 3, the purpose of the manipulation that I am making is to demonstrate the L3 switch capability to forward DHCP discover packets even if the DHCP server is not in the same broadcast domain with the DHCP client(ip helper-address command).
I need a way to link R1 with the Windows 7 machine directly. I have tried two things so far:
- Removing VMNET 3 from the physical host makes GN3 unable to recognize it.
- Setting a bogus IP address for the VMNET 3 interface for the physical machine didn't work and caused generation of looping packets.
Should I consider using L2 filtering mecanisms or Is there a way to create a virtual broadcast domain between R1 in GNS3 and the Windows 7 VM?
