NAT network between the host ESX with DVS

Hello.

In my test of vSphere 4, I have two ESX hosts. I want to share an IP address between all the virtual machines on these two ESX hosts. In this regard, I have a virtual machine that acts as a NAT router. This virtual machine has two network that is connected to each their own vNetwork Distributed Switch connection. We have a physical NIC (on each ESX host) which has the Internet connection. The other has no physical network connection.

To test if it works I created a VM test on both ESX hosts. The system works on the virtual machine that is on the same ESX host as the virtual machine that acts as a NAT router is located, but not the virtual machine on the other ESX host. The other VM have no contact with the router and receives no DHCP data.

Any suggestions? I know I did something wrong because DVS is new to me, but I really want this to work.

Hello

That ends up being a vNetwork design more than anything even with vDS. For example, if you have a NAT that works for all your hosts you would then have a NAT virtual appliance such as:

PSwitch external network <->Teddy <->vSwitch <->vPG <->NAT VM <->vPG <->vSwitch <->Teddy <->network internal pSwitch

Now the vSwitches in the above can be traditional vSwitches or vDS' the key is that the "seconds" vSwitch must be connected on the same vSwitch on all other hosts, so it has an uplink to a physical switch that is also connected to all other hosts. vDS does NOT lighten your vNetwork is the need of cable to allow the communication of the VM.

The VM NAT can move from host to host as long as there is communication to this virtual machine on each host on each network in this case, the external network and internal.

Best regards
Edward L. Haletky VMware communities user moderator, VMware vExpert 2009

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