Hyper V networking

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I've setup Hyper V 2008 on server 2008 r2 and appeared to setup the networking correctly, or so i thought anyway, but my virtual Vista machine can't see any network.

Current settings are the server 2008 r2 machine has 3 network connections, the external connection to the outside world i.e. LAN1, a disconnected secondary connection i.e. LAN2, and the virtual LAN connection that was setup by Hyper V i.e. VLAN.

Now, the network in Hyper V network manager is set to use the VLAN as the virtual network, set in external mode and using LAN1 in external mode, also set the Allow management operating system to share this network adapter. LAN1 only has the virtual networking protocol enabled and VLAN has all of protocols enabled apart from the virtual networking one - this was automatically set by HyperV. Installed a fresh copy of Vista Ultimate onto my first virtual machine but it can't detect any networks at all.

Any help please?

edit: Oh and the virtual machine is set to use VLAN as it's network connection. MAC address is dynamic, enable mac spoofing is off and enable vlan identification is greyed out.

 

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Windows 7 VM i've just setup in exactly the same way works fine...going to be upgrading the Vista VM to Windows 7 so just ignore my madness.

But...what's the best way to do it so the virtual network is on a private network where i can assign ip addresses, etc but still connect to the internet through the host machine?

 

can you ping into or out of the vista machine? with some XP clients i've used before I had to turn off/modify firewall to get them to 'see' one another.

 

The best way of doing that would be to have one of your machines with two virtual nics, one of them using an address range of your choice (either 10.x.x.x, 172.16.x.x or 192.168.x.x) and the rest of your machines on the same range, the second card would get it's address from the same DHCP server as your physical NIC and that would use your existing gateway out to the internet.

Your virtual network clients would use the IP address of the internal address on the machine with two nics (either the 10.x.x.x, 172.16.x.x or 192.168.x.x address) and connect that way.

You could even setup the routing on your physical network to connect through to the virtual network if you wanted, you would just need to add a persistant route to any client that wanted to connect to it.

 

Sounds simple to implement, so you'd basically use a machine as a gateway the joins the virtual network with the real network?

 

You use two different networks, the first would be the internal network, the second would be the external network, one machine would have both nics and it's as simple as that.