Vista Tutorial - Virtual server and different network segments....

09-03-2008

I have two network feeds and operate DNS on both. Each is a totally
separate and unique feed -- different routers, IP space, etc. I'd like
to virtual the DNS server on the secondary as a VM running on a host
machine that sits on the primary network.

The server has 2 NICs (it's a PowerEdge 2650) and I'm not using the
second NIC, so I could just as easily plug that into the secondary network.

Is this a doable thing? I don't want to create any routing issues for
the physical box and I know W2K3E doesn't particularly play well with
mixed network segments like that.

09-03-2008

"Noctaire" <noctaire@xxxxxx> wrote in message
news:OnLrQ5XDJHA.4732@xxxxxx

Quote:

> I have two network feeds and operate DNS on both. Each is a totally
> separate and unique feed -- different routers, IP space, etc. I'd like to
> virtual the DNS server on the secondary as a VM running on a host machine
> that sits on the primary network.
>
> The server has 2 NICs (it's a PowerEdge 2650) and I'm not using the second
> NIC, so I could just as easily plug that into the secondary network.
>
> Is this a doable thing? I don't want to create any routing issues for the
> physical box and I know W2K3E doesn't particularly play well with mixed
> network segments like that.

It seems a strange thing to do, but it is possible.

When you enable the second NIC, you would connect the vm to the virtual
network linked to that NIC.

On the host, you would disable VMNS on the first network card (so that it
was not accessible from a VM). On the second NIC you would disable
everything except VMNS (so that only the vm could access the network).

09-03-2008

> It seems a strange thing to do, but it is possible.

Strange why...?

Quote:

> When you enable the second NIC, you would connect the vm to the
> virtual network linked to that NIC.

Does the NIC have to be configured on the host? Can it be disabled in
the host's OS or just given a dummy address? I want to ensure the host
does NOT attempt to route over it.

Quote:

> On the host, you would disable VMNS on the first network card (so that
> it was not accessible from a VM). On the second NIC you would disable
> everything except VMNS (so that only the vm could access the network).

I wouldn't want to do that, would I? I have other VMs on this host that
route over the first NIC.

James

09-03-2008

> It seems a strange thing to do, but it is possible.

Strange why...?

Quote:

> When you enable the second NIC, you would connect the vm to the
> virtual network linked to that NIC.

Does the NIC have to be configured on the host? Can it be disabled in
the host's OS or just given a dummy address? I want to ensure the host
does NOT attempt to route over it.

Quote:

> On the host, you would disable VMNS on the first network card (so that
> it was not accessible from a VM). On the second NIC you would disable
> everything except VMNS (so that only the vm could access the network).

I wouldn't want to do that, would I? I have other VMs on this host that
route over the first NIC.

James

09-03-2008

"Noctaire" <noctaire@xxxxxx> wrote in message
news:48BE9F84.1050208@xxxxxx

Quote:

>> It seems a strange thing to do, but it is possible.

>
> Strange why...?
>

Quote:

>> When you enable the second NIC, you would connect the vm to the virtual
>> network linked to that NIC.

>
> Does the NIC have to be configured on the host? Can it be disabled in the
> host's OS or just given a dummy address? I want to ensure the host does
> NOT attempt to route over it.
>

Quote:

>> On the host, you would disable VMNS on the first network card (so that
>> it was not accessible from a VM). On the second NIC you would disable
>> everything except VMNS (so that only the vm could access the network).

>
> I wouldn't want to do that, would I? I have other VMs on this host that
> route over the first NIC.
>
> James

I suggest that you re-read what I wrote and think about it. How would it
possibly work if the NIC was disabled? What you are doing is isolating the
NIC from the IP stack on the host but allowing it to see the IP stack in the
guest(s).

09-03-2008	#1 (permalink)
Noctaire Guest n/a posts	Virtual server and different network segments.... I have two network feeds and operate DNS on both. Each is a totally separate and unique feed -- different routers, IP space, etc. I'd like to virtual the DNS server on the secondary as a VM running on a host machine that sits on the primary network. The server has 2 NICs (it's a PowerEdge 2650) and I'm not using the second NIC, so I could just as easily plug that into the secondary network. Is this a doable thing? I don't want to create any routing issues for the physical box and I know W2K3E doesn't particularly play well with mixed network segments like that.
My System Specs

09-03-2008	#2 (permalink)
Bill Grant Guest n/a posts	Re: Virtual server and different network segments.... "Noctaire" <noctaire@xxxxxx> wrote in message news:OnLrQ5XDJHA.4732@xxxxxx Quote: > I have two network feeds and operate DNS on both. Each is a totally > separate and unique feed -- different routers, IP space, etc. I'd like to > virtual the DNS server on the secondary as a VM running on a host machine > that sits on the primary network. > > The server has 2 NICs (it's a PowerEdge 2650) and I'm not using the second > NIC, so I could just as easily plug that into the secondary network. > > Is this a doable thing? I don't want to create any routing issues for the > physical box and I know W2K3E doesn't particularly play well with mixed > network segments like that. It seems a strange thing to do, but it is possible. When you enable the second NIC, you would connect the vm to the virtual network linked to that NIC. On the host, you would disable VMNS on the first network card (so that it was not accessible from a VM). On the second NIC you would disable everything except VMNS (so that only the vm could access the network).
My System Specs

09-03-2008	#3 (permalink)
Noctaire Guest n/a posts	Re: Virtual server and different network segments.... > It seems a strange thing to do, but it is possible. Strange why...? Quote: > When you enable the second NIC, you would connect the vm to the > virtual network linked to that NIC. Does the NIC have to be configured on the host? Can it be disabled in the host's OS or just given a dummy address? I want to ensure the host does NOT attempt to route over it. Quote: > On the host, you would disable VMNS on the first network card (so that > it was not accessible from a VM). On the second NIC you would disable > everything except VMNS (so that only the vm could access the network). I wouldn't want to do that, would I? I have other VMs on this host that route over the first NIC. James
My System Specs

09-03-2008	#4 (permalink)
Noctaire Guest n/a posts	Re: Virtual server and different network segments.... > It seems a strange thing to do, but it is possible. Strange why...? Quote: > When you enable the second NIC, you would connect the vm to the > virtual network linked to that NIC. Does the NIC have to be configured on the host? Can it be disabled in the host's OS or just given a dummy address? I want to ensure the host does NOT attempt to route over it. Quote: > On the host, you would disable VMNS on the first network card (so that > it was not accessible from a VM). On the second NIC you would disable > everything except VMNS (so that only the vm could access the network). I wouldn't want to do that, would I? I have other VMs on this host that route over the first NIC. James
My System Specs

09-03-2008	#5 (permalink)
Bill Grant Guest n/a posts	Re: Virtual server and different network segments.... "Noctaire" <noctaire@xxxxxx> wrote in message news:48BE9F84.1050208@xxxxxx Quote: Quote: >> It seems a strange thing to do, but it is possible. > > Strange why...? > Quote: >> When you enable the second NIC, you would connect the vm to the virtual >> network linked to that NIC. > > Does the NIC have to be configured on the host? Can it be disabled in the > host's OS or just given a dummy address? I want to ensure the host does > NOT attempt to route over it. > Quote: >> On the host, you would disable VMNS on the first network card (so that >> it was not accessible from a VM). On the second NIC you would disable >> everything except VMNS (so that only the vm could access the network). > > I wouldn't want to do that, would I? I have other VMs on this host that > route over the first NIC. > > James I suggest that you re-read what I wrote and think about it. How would it possibly work if the NIC was disabled? What you are doing is isolating the NIC from the IP stack on the host but allowing it to see the IP stack in the guest(s).
My System Specs

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