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Static IP for Virtual PCs - No network connectivity

Source: microsoft.public.virtualpc
Sent: 01/14/2009
From: Solomon
Message:

If anyone can help me out there I would be very grateful. Pulling My hair out!

I have a win2k3 server running two other win2k3 virtual PCs. The host has
network settings of
IP 192.167.0.3
SM 255.255.255.0
DG 192.168.0.1
DNS 192.168.0.1

I have internet access when I use NAT on the VPCs set their IP to DHCP and
their DNS to 192.168.131.254. However, I cannot browse to the VPCs from other
machines on the network or the host. If I set the VPCs to a static IP, I lose
internet connectivity and still cannot browse from the network. If I set them
to use the physical host adapter (and not use NAT), I can get to the Internet
on the VPCs but my host loses internet connectivity. I have never been able
to browse to a VPC from another computer on the network or the host (ping
times out).

We have a Linksys router with DHCP enabled. I eventually would like to run
IIS on a VPC and route port 80 to the static IP address. I understand why
most of these are happening, just not sure what the solution is for getting
these VPCs as full citizens of our network.

Thanks.
Sol

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Related Messages

Re: Static IP for Virtual PCs - No network connectivity

Sent: 01/14/2009
From: "Steve Jain [MVP]" <(email address - cut out)>
Message:

On Wed, 14 Jan 2009 14:52:01 -0800, Solomon
<(email address - cut out)> wrote:

Is the host getting a DHCP IP too? If not, are you sure that DHCP is
not assigning .3 to your VM?

What IPs are you using when you set the VM to static IP? Are you sure
they're free? Are you matching up the GW and DNS to the host also?

--
Cheers,
Steve Jain, Virtual Machine MVP
http://vpc.essjae.com/

Show quoted text

>If anyone can help me out there I would be very grateful. Pulling My hair out!
>
>I have a win2k3 server running two other win2k3 virtual PCs. The host has
>network settings of
>IP 192.167.0.3
>SM 255.255.255.0
>DG 192.168.0.1
>DNS 192.168.0.1
>
>I have internet access when I use NAT on the VPCs set their IP to DHCP and
>their DNS to 192.168.131.254. However, I cannot browse to the VPCs from other
>machines on the network or the host. If I set the VPCs to a static IP, I lose
>internet connectivity and still cannot browse from the network. If I set them
>to use the physical host adapter (and not use NAT), I can get to the Internet
>on the VPCs but my host loses internet connectivity. I have never been able
>to browse to a VPC from another computer on the network or the host (ping
>times out).
>
>We have a Linksys router with DHCP enabled. I eventually would like to run
>IIS on a VPC and route port 80 to the static IP address. I understand why
>most of these are happening, just not sure what the solution is for getting
>these VPCs as full citizens of our network.
>
>Thanks.
>Sol

Re: Static IP for Virtual PCs - No network connectivity

Sent: 01/14/2009
From: Solomon
Message:

Yeah, the host definitely has a static IP. When I run IPCONFIG on the VM, I
get a different IP address.

I am relatively sure the VMs are not using an already assigned IP, but I
will check. I am using the same DNS and GW.

I should be using NAT, correct? Not Loopback or something else?

Thanks for getting back to me so quick!

Solomon

"Steve Jain [MVP]" wrote:

Show quoted text

> On Wed, 14 Jan 2009 14:52:01 -0800, Solomon
> <(email address - cut out)> wrote:
>
> >If anyone can help me out there I would be very grateful. Pulling My hair out!
> >
> >I have a win2k3 server running two other win2k3 virtual PCs. The host has
> >network settings of
> >IP 192.167.0.3
> >SM 255.255.255.0
> >DG 192.168.0.1
> >DNS 192.168.0.1
> >
> >I have internet access when I use NAT on the VPCs set their IP to DHCP and
> >their DNS to 192.168.131.254. However, I cannot browse to the VPCs from other
> >machines on the network or the host. If I set the VPCs to a static IP, I lose
> >internet connectivity and still cannot browse from the network. If I set them
> >to use the physical host adapter (and not use NAT), I can get to the Internet
> >on the VPCs but my host loses internet connectivity. I have never been able
> >to browse to a VPC from another computer on the network or the host (ping
> >times out).
> >
> >We have a Linksys router with DHCP enabled. I eventually would like to run
> >IIS on a VPC and route port 80 to the static IP address. I understand why
> >most of these are happening, just not sure what the solution is for getting
> >these VPCs as full citizens of our network.
> >
> >Thanks.
> >Sol
>
> Is the host getting a DHCP IP too? If not, are you sure that DHCP is
> not assigning .3 to your VM?
>
> What IPs are you using when you set the VM to static IP? Are you sure
> they're free? Are you matching up the GW and DNS to the host also?
>
> --
> Cheers,
> Steve Jain, Virtual Machine MVP
> http://vpc.essjae.com/
>

Re: Static IP for Virtual PCs - No network connectivity

Sent: 01/15/2009
From: "Bill Grant" <not.available@online>
Message:

No, you should not be using Shared Networking (NAT). To be able to direct
traffic from your Linksys to a vm, that vm must look like another machine on
your private LAN. It should be set to the physical NIC option and it should
get its config from DHCP on the Linksys. The host machine and the vms should
all have IP addresses in the same IP subnet and use the Linksys as the
gateway.

Set the vm to the physical NIC option and set it to obtain an IP and
DNS automatically. When you boot it up it should get its config from DHCP.

This setting should not affect how the host connects to the Internet.
If it does, there may be a problem with the driver for your network card.
Some drivers do not work well with VMNS (Virtual Machine Network Services)
which is the code that allows the vms to use the physical NIC.

"Solomon" <(email address - cut out)> wrote in message
news:(email address - cut out)...

Show quoted text

> Yeah, the host definitely has a static IP. When I run IPCONFIG on the VM,
> I
> get a different IP address.
>
> I am relatively sure the VMs are not using an already assigned IP, but I
> will check. I am using the same DNS and GW.
>
> I should be using NAT, correct? Not Loopback or something else?
>
> Thanks for getting back to me so quick!
>
> Solomon
>
> "Steve Jain [MVP]" wrote:
>
>> On Wed, 14 Jan 2009 14:52:01 -0800, Solomon
>> <(email address - cut out)> wrote:
>>
>> >If anyone can help me out there I would be very grateful. Pulling My
>> >hair out!
>> >
>> >I have a win2k3 server running two other win2k3 virtual PCs. The host
>> >has
>> >network settings of
>> >IP 192.167.0.3
>> >SM 255.255.255.0
>> >DG 192.168.0.1
>> >DNS 192.168.0.1
>> >
>> >I have internet access when I use NAT on the VPCs set their IP to DHCP
>> >and
>> >their DNS to 192.168.131.254. However, I cannot browse to the VPCs from
>> >other
>> >machines on the network or the host. If I set the VPCs to a static IP, I
>> >lose
>> >internet connectivity and still cannot browse from the network. If I set
>> >them
>> >to use the physical host adapter (and not use NAT), I can get to the
>> >Internet
>> >on the VPCs but my host loses internet connectivity. I have never been
>> >able
>> >to browse to a VPC from another computer on the network or the host
>> >(ping
>> >times out).
>> >
>> >We have a Linksys router with DHCP enabled. I eventually would like to
>> >run
>> >IIS on a VPC and route port 80 to the static IP address. I understand
>> >why
>> >most of these are happening, just not sure what the solution is for
>> >getting
>> >these VPCs as full citizens of our network.
>> >
>> >Thanks.
>> >Sol
>>
>> Is the host getting a DHCP IP too? If not, are you sure that DHCP is
>> not assigning .3 to your VM?
>>
>> What IPs are you using when you set the VM to static IP? Are you sure
>> they're free? Are you matching up the GW and DNS to the host also?
>>
>> --
>> Cheers,
>> Steve Jain, Virtual Machine MVP
>> http://vpc.essjae.com/
>>

Re: Static IP for Virtual PCs - No network connectivity

Sent: 01/16/2009
From: "Mark Rae [MVP]" <(email address - cut out)>
Message:

"Magnusb" <(email address - cut out)> wrote in message
news:(email address - cut out)...

It is.

Specifically, at the bottom of the topic entitled Troubleshooting Virtual PC

--
Mark Rae
ASP.NET MVP
http://www.markrae.net

Show quoted text

> I think it is possible to change which MAC the VM is using
> think it is in the help file

Re: Static IP for Virtual PCs - No network connectivity

Sent: 01/16/2009
From: Magnusb <(email address - cut out)>
Message:

Have you setup your DHCP to assing static ips using MAC address? If so
then the problem is maybe that the VM is using the same MAC address for
the NIC as the host.

I think it is possible to change which MAC the VM is using (think it is
the help file or try google)

Re: Static IP for Virtual PCs - No network connectivity

Sent: 01/16/2009
From: "Mark Rae [MVP]" <(email address - cut out)>
Message:

"Bo Berglund" <(email address - cut out)> wrote in message
news:(email address - cut out)...

192.167.0.3 is (almost) certainly a typo, as that's not even a private
address...

--
Mark Rae
ASP.NET MVP
http://www.markrae.net

Show quoted text

>>If anyone can help me out there I would be very grateful. Pulling My hair
>>out!
>>
>>I have a win2k3 server running two other win2k3 virtual PCs. The host has
>>network settings of
>>IP 192.167.0.3
>>SM 255.255.255.0
>>DG 192.168.0.1
>>DNS 192.168.0.1
>
> This will NOT work!
> You have your PC and all others on different subnets!
> 192.167 versus 192.168!!!

Re: Static IP for Virtual PCs - No network connectivity

Sent: 01/16/2009
From: Bo Berglund <(email address - cut out)>
Message:

On Fri, 16 Jan 2009 16:32:16 +0100, Magnusb <(email address - cut out)> wrote:

Ther MAC of the host PC:s network card and the MAC of the virtual
machine's network card are NOT the same!!!!
Where did you get thta from?
VPC assigns a unique MAC address to each new network interface it
creates in a virtual machine and it is unique to that machine (as it
should).

--

Bo Berglund (Sweden)

Show quoted text

>Have you setup your DHCP to assing static ips using MAC address? If so
>then the problem is maybe that the VM is using the same MAC address for
>the NIC as the host.
>
>I think it is possible to change which MAC the VM is using (think it is
>the help file or try google)

Re: Static IP for Virtual PCs - No network connectivity

Sent: 01/16/2009
From: Bo Berglund <(email address - cut out)>
Message:

On Wed, 14 Jan 2009 14:52:01 -0800, Solomon
<(email address - cut out)> wrote:

This will NOT work!
You have your PC and all others on different subnets!
192.167 versus 192.168!!!

--

Bo Berglund (Sweden)

Show quoted text

Re: Static IP for Virtual PCs - No network connectivity

Sent: 01/21/2009
From: Magnusb <(email address - cut out)>
Message:

In article <(email address - cut out)>,
(email address - cut out) says...

I am pretty sure that at one time when I was trying to setup my dhcp at
home with static ip adresses bound to mac address I saw them having the
same MAC address. Don't remember if it was same as host or it was two VM
having same MAC.

But I might remember wrong. Guess it might be possible that two VMs have
same MAC if you have copied VMC files or something. But I guess that
networking would fail completly then.

Show quoted text

> Ther MAC of the host PC:s network card and the MAC of the virtual
> machine's network card are NOT the same!!!!
> Where did you get thta from?
> VPC assigns a unique MAC address to each new network interface it
> creates in a virtual machine and it is unique to that machine (as itost or two
> should).

Re: Static IP for Virtual PCs - No network connectivity

Sent: 01/21/2009
From: Bo Berglund <(email address - cut out)>
Message:

On Wed, 21 Jan 2009 12:30:43 +0100, Magnusb <(email address - cut out)> wrote:

You cannot make a guest copy simply by copying the VHD and VMC files.
Then these two machines are absolutely identical in all respects
including the MAC address of their network cards and if using windows
also the SID is identical.
Such copies will cause all kinds of problems in a virtual network...

So the best copy way is to only copy the VHD file and then create a
new guest where you point the wizard to the copied VHD hard disk file.
THis ensures unique MAC addresses at least.
Then you should also use the NewSID program inside the windows guest
to create a unique identifier for it and of course change the host
name (PC name in Windows) so they are not the same.

--

Bo Berglund (Sweden)

Show quoted text

>In article <(email address - cut out)>,
>(email address - cut out) says...
>
>> Ther MAC of the host PC:s network card and the MAC of the virtual
>> machine's network card are NOT the same!!!!
>> Where did you get thta from?
>> VPC assigns a unique MAC address to each new network interface it
>> creates in a virtual machine and it is unique to that machine (as itost or two
>> should).
>
>I am pretty sure that at one time when I was trying to setup my dhcp at
>home with static ip adresses bound to mac address I saw them having the
>same MAC address. Don't remember if it was same as host or it was two VM
>having same MAC.
>
>But I might remember wrong. Guess it might be possible that two VMs have
>same MAC if you have copied VMC files or something. But I guess that
>networking would fail completly then.

Re: Static IP for Virtual PCs - No network connectivity

Sent: 01/29/2009
From: Magnusb <(email address - cut out)>
Message:

In article <(email address - cut out)>,
(email address - cut out) says...

Yes I know. I am just pointing out that if someone has copied VMC files
then you might get same MAC and lots of problems. I am pretty sure I
never did that myself (however I have moved and renamed VMC files though
so I might have made a mistake).

However today I got the following error message:

"The network adapter with address "00:03:FF:4D:77:0B" of virtual machine
"XP Vpn Sundsvall" failed to initialize because the address is in use by
another virtual machine."

I had two VM running, however they did NOT have the same MAC address (ne
of the VMs I created today). Checked in VMC files as well and they were
not the same.

I got this after computer got into "sleep" and getting back up.

Error messages might be bogus though and actually indicating some other
problem.

Show quoted text

> You cannot make a guest copy simply by copying the VHD and VMC files.
> Then these two machines are absolutely identical in all respects
> including the MAC address of their network cards and if using windows
> also the SID is identical.

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