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Communications between host and VM on laptop without network connection

Source: microsoft.public.virtualserver
Sent: 09/01/2006
From: "Mike Buchanan" <(email address - cut out)>
Message:

I'm running Virtual Server from a laptop. The laptop OS is XP. The laptop
is a domain member but I always log in locally.

I need to be able to move files from the host machine to the virtual
machines. When I'm connected to a network this all works fine. I have
created a virtual network based on the physical ethernet NIC. The virtual
machines get IP addresses from the network DHCP, the machines (real and
virtual) can see and ping each other and share folders. All is good.

I sometimes need to work disconnected and can not get a configuration
working where the virtual machines can see and communicate with the host.

Following instruction in the Admin Guide I installed the Microsoft Loopback
Adapter, configured it to use IP/submak 192.168.1.1/255.255.255.0

The instructions didn't say anything about creating a new virtual network
based on the Loopback adapter but I did and tried starting the VM with and
without attaching it.

FWIW, if I start two VMs then they can see each other via the internal
virtual network but they can't see the host machine.

I can give more details if necessary, such as the IP values on the VMs.

The bottom line is I just can't get the host and VM to see each other when
not connected to a real network.

--
Mike Buchanan

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Related Messages

Re: Communications between host and VM on laptop without network connection

Sent: 09/02/2006
From: "Bill Grant" <not.available@online>
Message:

You have a virtual network linked to the loopback adapter. If you set
the NIC in your virtual machine to be in the loopback adapter network it
will be in the same network as the host's loopback adapter. If you set the
NIC in the vm with an IP address of 192.168.1.x netmask 255.255.255.0 it
should be able to ping the host on 192.168.1.1 . If it can't, check the
firewall settings on the host.

Mike Buchanan wrote:

Show quoted text

> I'm running Virtual Server from a laptop. The laptop OS is XP. The
> laptop is a domain member but I always log in locally.
>
> I need to be able to move files from the host machine to the virtual
> machines. When I'm connected to a network this all works fine. I
> have created a virtual network based on the physical ethernet NIC.
> The virtual machines get IP addresses from the network DHCP, the
> machines (real and virtual) can see and ping each other and share
> folders. All is good.
>
> I sometimes need to work disconnected and can not get a configuration
> working where the virtual machines can see and communicate with the
> host.
>
> Following instruction in the Admin Guide I installed the Microsoft
> Loopback Adapter, configured it to use IP/submak
> 192.168.1.1/255.255.255.0
>
> The instructions didn't say anything about creating a new virtual
> network based on the Loopback adapter but I did and tried starting
> the VM with and without attaching it.
>
> FWIW, if I start two VMs then they can see each other via the internal
> virtual network but they can't see the host machine.
>
> I can give more details if necessary, such as the IP values on the
> VMs.
>
> The bottom line is I just can't get the host and VM to see each other
> when not connected to a real network.

Re: Communications between host and VM on laptop without network connection

Sent: 09/04/2006
From: (email address - cut out)
Message:

I use ISO Recorder (http://isorecorder.alexfeinman.com/isorecorder.htm)
to create a CD image of the folder in the host OS. Then, I map the CD
drive of the guest OS to the iso image. It's one way communication;
stupid, but works.

/Ali

Bill Grant wrote:

Show quoted text

Re: Communications between host and VM on laptop without network connection

Sent: 09/05/2006
From: "Mike Buchanan" <(email address - cut out)>
Message:

Thanks Bill.

I was looking for a configuration where I could run either connected or not
but after going through many configurations I finally came to the conclusing
that I will have to do a bit of manual reconfiguration. It's pretty minor
so I can certainly live with it.

For future reference to anyone else here's what I did:

1) Install the Microsoft Loopback Adaptor on the host as described in the
Virtual Server Admin Guide. Just follow the instructions to install and
then set a static IP address for the new adaptor. The standard values are
192.168.1.1 / 255.255.255.0. You don't need to repeat this on the virtual
machines, just the host.

2) Create a new virtual network for the Loopback Adaptor. I didn't change
any of the defaults.

You need to manually reconfigure when you SWITCH CONFIGURATIONS, otherwise
no action is necessary.

When connected to a network:
=====================
1) Configure the virtual machine to use physical NIC virtual network.
Remove the loopback virtual network.
2) Start the virtual machine and log in.
3) Set the TCP/IP properties of the NIC to use DHCP.
4) Disable and reinable the NIC to get new dynamic IP address.

When NOT connected to a network:
=========================
1) Configure the virtual machine to use Loopback virtual network. Remove
the physical NIC virtual network.
2) Start the virtual machine and log in.
3) Set the TCP/IP properties of the NIC to use a static IP. If you used the
standard value for the host then just add 1 to the IP address and leave the
subnet mask alone. For example set it to 192.168.1.2 / 255.255.255.0
4) Disable and reinable the NIC to get the static address.

Notes
====
If your virtual machine never needs to talk to any machine other than the
host computer than you can just use the Loopback virtual network, but if you
do then you need to switch to the Physical NIC virtual network.

If may be possible, but I was unable to configure the virtual machine with
both virtual networks and get it to work when running without the network.
--
Mike Buchanan

"Bill Grant" <not.available@online> wrote in message
news:(email address - cut out)...

Show quoted text

> You have a virtual network linked to the loopback adapter. If you set
> the NIC in your virtual machine to be in the loopback adapter network it
> will be in the same network as the host's loopback adapter. If you set the
> NIC in the vm with an IP address of 192.168.1.x netmask 255.255.255.0 it
> should be able to ping the host on 192.168.1.1 . If it can't, check the
> firewall settings on the host.
>
> Mike Buchanan wrote:
> > I'm running Virtual Server from a laptop. The laptop OS is XP. The
> > laptop is a domain member but I always log in locally.
> >
> > I need to be able to move files from the host machine to the virtual
> > machines. When I'm connected to a network this all works fine. I
> > have created a virtual network based on the physical ethernet NIC.
> > The virtual machines get IP addresses from the network DHCP, the
> > machines (real and virtual) can see and ping each other and share
> > folders. All is good.
> >
> > I sometimes need to work disconnected and can not get a configuration
> > working where the virtual machines can see and communicate with the
> > host.
> >
> > Following instruction in the Admin Guide I installed the Microsoft
> > Loopback Adapter, configured it to use IP/submak
> > 192.168.1.1/255.255.255.0
> >
> > The instructions didn't say anything about creating a new virtual
> > network based on the Loopback adapter but I did and tried starting
> > the VM with and without attaching it.
> >
> > FWIW, if I start two VMs then they can see each other via the internal
> > virtual network but they can't see the host machine.
> >
> > I can give more details if necessary, such as the IP values on the
> > VMs.
> >
> > The bottom line is I just can't get the host and VM to see each other
> > when not connected to a real network.
>
>

RE: Communications between host and VM on laptop without network connection

Sent: 06/20/2007
From: "Andrew Goldie"<(email address - cut out)>
Message:

Thanks Mike. Just what I was looking for. Appreciate you taking the time to post your solution. Being a .NET developer doesn't automatically make one a network engineer but many development tasks require setting up environments that are a little more than "networks for dummies". Thanks again.

Andrew Goldie
http://www.cyberfuel.co.nz

Posted via http://www.VirtualServerFaq.com - Brought to you by Business Information Technology Shop - http://www.bitshop.com

Show quoted text

> I'm running Virtual Server from a laptop. The laptop OS is XP. The laptop
> is a domain member but I always log in locally.
>
> I need to be able to move files from the host machine to the virtual
> machines. When I'm connected to a network this all works fine. I have
> created a virtual network based on the physical ethernet NIC. The virtual
> machines get IP addresses from the network DHCP, the machines (real and
> virtual) can see and ping each other and share folders. All is good.
>
> I sometimes need to work disconnected and can not get a configuration
> working where the virtual machines can see and communicate with the host.
>
> Following instruction in the Admin Guide I installed the Microsoft Loopback
> Adapter, configured it to use IP/submak 192.168.1.1/255.255.255.0
>
> The instructions didn't say anything about creating a new virtual network
> based on the Loopback adapter but I did and tried starting the VM with and
> without attaching it.
>
> FWIW, if I start two VMs then they can see each other via the internal
> virtual network but they can't see the host machine.
>
> I can give more details if necessary, such as the IP values on the VMs.
>
> The bottom line is I just can't get the host and VM to see each other when
> not connected to a real network.
>
> --
> Mike Buchanan
>

Post Reply | This is Spam! | Mark as Spam

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