Virtual Server 2005

[GregE240]

Slight problem here.

I've got 2 Virtual machines installed on a host using the above. They have 2 IP addresses on the same network as the host. They can ping the host all day long, and vice versa.

The host can ping other machines on the network, but the virtual machines cannot. I thought it might be that the virtual machines needed the IP address of the host as a default gateway, but it makes no difference at all. In fact, all machines are on the same network anyway, but I thought the VMs would need a gateway so they knew to use the host to get out.

Any ideas?

Greg

[pdV6]

Don't know about Virtual Server, but with MS Virtual PC, each virtual PC can be set up in exactly the same way as a "real" client PC on the network - no need to mess around with special gateways etc.

[Plotloss]

Yep as the man says it should be transparent...

[m12_nathan]

Get VMWare ESX server instead.

[GregE240]

So no gateways required?

Okay.....that makes sense. For the record, not only can none of the VMs access any network resources (a mail server specifically), but the mail server cannot see any of the VMs, just timeouts on ping.

Hmmm.

[GregE240]

m12_nathan said:

Get VMWare ESX server instead.

Thanks for your help.

[pdV6]

Have you joined the virtual machines to the domain in the same way that you would with real ones?

[GregE240]

pdV6 said:

Have you joined the virtual machines to the domain in the same way that you would with real ones?

Yeah we have Pete but its the ping issue we have....have spoken to Matt and changed the mask from 255.0.0.0 to 255.255.255.0, and its still the same.

As I said before, from the mail server on the same network, you can ping the host machine the VMs are on, but neither of the VMs. Likewise, on the VMs you can ping the host, but nothing beyond it.

Puzzled.

[Plotloss]

On the machine that the VPC's sit on.

Is there a firewall?

I doubt this would make much difference if any mind you...

[GregE240]

Plotloss said:

On the machine that the VPC's sit on. Is there a firewall? I doubt this would make much difference if any mind you...

No, the host IS running XP SP2 but the firewall is disabled.

[pdV6]

Are you pinging by IP or by name? Maybe its a DNS/WINS issue?

[pdV6]

Is there any milage in using DHCP to allocate IP addresses to your VPCs rather than setting them manually?

[Plotloss]

He's doing everything by IP address which has left me confused I have to say...

[GregE240]

pdV6 said:

Are you pinging by IP or by name? Maybe its a DNS/WINS issue?

IP. Although there is a DNS server on the network. The problem seems isolated to the Virtual machines though?

[pdV6]

How very strange. Definately haven't accidentally re-used an IP addy that some other machine is using?

[Podie]

The virtual machines should be using the same gateway that the host is using (i.e. the IP of the router it's probably attached to), rather than using the host as the gateway.

The virtual machines should probably see the host machine that they live in as a separate machine on the network...

[Podie]

A nice picture of my understanding...

[GregE240]

Podie said:

The virtual machines should be using the same gateway that the host is using (i.e. the IP of the router it's probably attached to), rather than using the host as the gateway. The virtual machines should probably see the host machine that they live in as a separate machine on the network...

OK, the VMs have no gateway set up, so are you saying it should have the hosts IP address as gateway? Thata what I originally thought i have to say.

Can ping the host from both VMs, and vice versa. But nothing else on the network can see the VMs and vice versa.

[pdV6]

GregE240 said:

OK, the VMs have no gateway set up, so are you saying it should have the hosts IP address as gateway? Thata what I originally thought i have to say.

Don't think so. Would only need that for access to external networks (e.g. internet, vpn etc)

GregE240 said:

Can ping the host from both VMs, and vice versa. But nothing else on the network can see the VMs and vice versa.

The fact that your real PCs and VPCs are all in the 10.0.0.x range should mean they can all see each other with no problems.

Perhaps its a setting in the Virtual Server software that's deliberately preventing network access to the VPC instances?

[Podie]

pdV6 said:

GregE240 said: OK, the VMs have no gateway set up, so are you saying it should have the hosts IP address as gateway? Thata what I originally thought i have to say. Don't think so. Would only need that for access to external networks (e.g. internet, vpn etc)

I thought they needed the gateway in order to "see" outside the physical box, because in effect they have to be told to share the solitary network cable that goes into the physical box….