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Windows Forum / Virtual PC / May 2008

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Getting Virtual PC's to see each other

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Dom - 07 May 2008 22:47 GMT
Hi guys

I have 3 Virtual PC's which I can't seem to get networked with each
other... 1 is a Server 2003 Enterprise setup acting as a DHCP/DNS
server and domain controller, another is also a Server 2003 Enterprise
install which I want to join to the 1st server as a member server and
the last VPC is an XP Pro workstation.

I've tweaked the networking options on each VPC as much as I know how
(I'm in the process of studying towards my MCSE 2003), but to no
avail.

Could somebody please help me? I want to get my little domain up and
running :-(

TIA
Mark Rae [MVP] - 07 May 2008 23:59 GMT
> I have 3 Virtual PC's which I can't seem to get networked with each
> other... 1 is a Server 2003 Enterprise setup acting as a DHCP/DNS
[quoted text clipped - 8 lines]
> Could somebody please help me? I want to get my little domain up and
> running :-(

This really isn't a Virtual PC question per se - networking three virtual
machines is really no different from networking three physical machines...

Are all three machines in the same domain / workgroup...?

Are they all on the same subnet...?

Signature

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

Bill Grant - 08 May 2008 00:07 GMT
As Mark pointed out, the only essential is that they be in the same
network. If you want to use DHCP they need to be in a network which does not
already have a DHCP server running.

   With VPC, put all of the vms in Local Only. Give the DC a static IP in
its own IP subnet and set up DHCP with a scope to service that subnet and
the DC's IP address for DNS.

>> I have 3 Virtual PC's which I can't seem to get networked with each
>> other... 1 is a Server 2003 Enterprise setup acting as a DHCP/DNS
[quoted text clipped - 15 lines]
>
> Are they all on the same subnet...?
Dom - 08 May 2008 00:29 GMT
> > I have 3 Virtual PC's which I can't seem to get networked with each
> > other... 1 is a Server 2003 Enterprise setup acting as a DHCP/DNS
[quoted text clipped - 19 lines]
> Mark Rae
> ASP.NET MVPhttp://www.markrae.net

Hi Mark

Yup, all 3 machines are on the same IP address range/subnet, but I
can't get the second server and XP Pro install onto the domain the 1st
server is a DC for.

I should've mentioned that I can't even ping one machine from another,
they're completely oblivious to each other. On my home network here I
have a DSL router that is already acting as a DHCP/DNS server. Would
that be causing a conflict?

I have also tried putting the 3 VPC's on the 'Local only' setting for
their LAN adapters, to isolate them from the network at home here, but
even then they still can't see each other (I have gone so far as to
add manual addresses to each VPC and edited the hosts file on each to
reflect the others). This made no difference either :-(

As I mentioned, I need this little domain operational to allow me to
continue with my MCSE studies (the exercise requires 2 servers and a
workstation all joined up).
Mark Rae [MVP] - 08 May 2008 00:41 GMT
> Yup, all 3 machines are on the same IP address range/subnet, but I
> can't get the second server and XP Pro install onto the domain the 1st
> server is a DC for.

Is there another DHCP server on the same network...?

> I should've mentioned that I can't even ping one machine from another,
> they're completely oblivious to each other. On my home network here I
> have a DSL router that is already acting as a DHCP/DNS server. Would
> that be causing a conflict?

Aha! Yes, almost certainly...

> As I mentioned, I need this little domain operational to allow me to
> continue with my MCSE studies

Complete and utter waste of time, but that's just my opinion...

Signature

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

Bill Grant - 08 May 2008 00:54 GMT
>> Yup, all 3 machines are on the same IP address range/subnet, but I
>> can't get the second server and XP Pro install onto the domain the 1st
[quoted text clipped - 17 lines]
> ASP.NET MVP
> http://www.markrae.net

   Are the NICs of all three machines linked to Local Only? If they are
they cannot see the DHCP server on the DSL router.

  Have you done an ipconfig /all on the client machines to see what config
they actually have? Are they in the same IP subnet as the DC? Do they have
the DC as their DNS server?

   The DHCP server on the DC will not issue any addresses until it is
authorised to do so in AD.

   As Mark pointed out earlier, this has nothing to do with VPC. You could
post in windows.server.networking with a bit more detail about your network
config (such as IP addresses and DNS settings).
Dom - 08 May 2008 19:23 GMT
> >> Yup, all 3 machines are on the same IP address range/subnet, but I
> >> can't get the second server and XP Pro install onto the domain the 1st
[quoted text clipped - 31 lines]
> post in windows.server.networking with a bit more detail about your network
> config (such as IP addresses and DNS settings).

Hi Bill

Yip, just checked all the VPC's LAN cards and they are set for local
only.

The DHCP server on my Server 2003 install is showing as active, and I
have tried setting the XP Pro VPC to obtain an IP automatically...
It just ends up with an automatic private IP, so it can't physically
see the DHCP server on the Server VPC.

Would it be worth mentioning that I have Vista Home Premium loaded on
my PC (as in what I have as the host OS)? Could that have any effect?

Thanks for all your suggestions so far.
Steve Jain - 08 May 2008 21:18 GMT
>> >> Yup, all 3 machines are on the same IP address range/subnet, but I
>> >> can't get the second server and XP Pro install onto the domain the 1st
[quoted text clipped - 46 lines]
>
>Thanks for all your suggestions so far.

Have you checked the firewalls on the computers, physical and virtual?

Signature

Cheers,
Steve Jain, Virtual Machine MVP
http://vpc.essjae.com/
I do not work for Microsoft.

Dom - 11 May 2008 22:28 GMT
> >> >> Yup, all 3 machines are on the same IP address range/subnet, but I
> >> >> can't get the second server and XP Pro install onto the domain the 1st
[quoted text clipped - 53 lines]
> Steve Jain, Virtual Machine MVPhttp://vpc.essjae.com/
> I do not work for Microsoft.

Hi Steve

It appears you were right... I turned the firewall off on the VPC
Server 2003 and then suddenly the XP VPC could get an IP address,
etc.
It does say when installing Server 2003 that all inbound connections
are blocked, except for those necessary for the PSSU.

I have to admit that I know little about firewalls and what ports to
open, etc. What would I need to configure to get the firewall working
properly?

Many TIA
Bill Grant - 09 May 2008 00:02 GMT
>>     Are the NICs of all three machines linked to Local Only? If they are
>> they cannot see the DHCP server on the DSL router.
[quoted text clipped - 28 lines]
>
> Thanks for all your suggestions so far.

   It looks like your DHCP server isn't functional. You could manually
configure a client machine to be in the same IP subnet as the server an
using the server as its DNS server. You should then be able to join the
domain.
Dom - 08 May 2008 19:12 GMT
> > Yup, all 3 machines are on the same IP address range/subnet, but I
> > can't get the second server and XP Pro install onto the domain the 1st
[quoted text clipped - 17 lines]
> Mark Rae
> ASP.NET MVPhttp://www.markrae.net

You really reckon the MCSE is a waste of time? Or were you referring
to my little operation of linking up VPC's?
Mark Rae [MVP] - 08 May 2008 19:44 GMT
> You really reckon the MCSE is a waste of time?

Yes. Completely.

MCSE, as you doubtless know, consists of several MCP qualifications. All of
the questions and answers for these can be downloaded from any number of
Internet sites for a few dollars each. All it takes to pass an MCP is the
ability to retain a whole load of useless information for a few hours.

I regularly sit in on technical interviews for clients and, generally
speaking, the more of these "qualifications" a candidate has the less useful
practical experience he has...

Signature

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

 
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