Re: Windows 2K3 and Virtual Server 2005 guests NAT problem
- From: "Ace Fekay [MVP]" <PleaseAskMe@xxxxxxxxxxxxxx>
- Date: Tue, 24 Apr 2007 01:10:04 -0400
In news:1177348459.319478.301190@xxxxxxxxxxxxxxxxxxxxxxxxxxxx,
lazylland@xxxxxxxxx <lazylland@xxxxxxxxx> typed:
Hi everyone,
I am forced to post on not finding a suitable applicable solution from
the various permutations of the same issue.
we are developing some test applications on guest machines that run on
Virtual Server. However, these machines are not able to connect to our
corporate LAN. I had enabled the Loopback adapter to form a virtual
internal network.
The server is essentially connected to a 'public' network and a
private network.
Server --> NIC1 --> (LAN)
--> NIC2(LoopbackAdapter) --> Guest OS
Notes :
1. The client is able to ping the internal address of the server
"192.168.1.55" ..
2. Pinging any external address, or name resolution does not happen on
the client.
3. The NAT/Firewall setting on the server is configured to provide
both DHCP and DNS. But only DHCP seems to be working.
Configurations on the server side (fake ip's)
---------------------------------:
Ethernet adapter "Corporate LAN"
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network
Connection #2
Physical Address. . . . . . . . . : 00-43-12-D6-2E-4F
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 62.186.122.103
Subnet Mask . . . . . . . . . . . : 255.255.254.0
Default Gateway . . . . . . . . . : 62.96.122.4
DHCP Server . . . . . . . . . . . : 62.96.193.4
DNS Servers . . . . . . . . . . . : 62.96.192.44
62.96.192.4
Primary WINS Server . . . . . . . : 62.96.192.4
Ethernet adapter "MS Loopback Adapter" :
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Loopback Adapter
Physical Address. . . . . . . . . : 02-00-4C-4F-4F-50
DHCP Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : 192.168.1.55
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
Configurations received on the client side (through DHCP from RRAS)
---------------------------------:
Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network
Connection #2
Physical Address. . . . . . . . . : 00-03-FF-D6-2E-4F
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 62.186.122.103
Subnet Mask . . . . . . . . . . . : 255.255.254.0
Default Gateway . . . . . . . . . : 192.168.1.55
DHCP Server . . . . . . . . . . . : 192.168.1.55
DNS Servers . . . . . . . . . . . : 192.168.1.55
Primary WINS Server . . . . . . . :
Can you give me any clues as to how I can get the client to connect to
ip addresses on the corporate LAN ?
Regards,
CP
I don't think you will get the loopback adapter to work in such a
configuration. That was designed to provide network connectivity for testing
if you do not have a physical NIC. Therefore I do not think it will work
this way. Matter of fact this is the first time I've ever heard of such a
scenario with it. IF you get it to work, I would be interested in seeing the
actual configuration and what your settings are.
Nonetheless, I would just put everything on the actual physical NICs in each
VM properties. If you want to have the two or three VMs on a private
192.168.1.x network, you will have to pick one of the VMs to be your NAT
device. All the other VMs will use this guy as their gateway.
If you can't get NAT to work and only DHCP works, NAT is probably
conflicting with the ICS service, and if that is not on, then I would
imagine RRAS is not setup correctly, but then again, that could be the VM
properties for NAT conflicting, and can be the root of the whole problem.
Also ensure that eacy VM NIC has a unique MAC.
--
Regards,
Ace
Innovative IT Concepts, Inc (IITCI)
Willow Grove, PA
This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.
Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
Microsoft MVP - Directory Services
Microsoft Certified Trainer
Infinite Diversities in Infinite Combinations
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