Vmware Ips on different subnets not working

Vmware Esx server v2 (license only)
January 14, 2010 at 09:32:27
Specs: WIndows 2003 Server, Dual Quad Core Xeons/12GB
I am colocating my new server. I was provided a static IP, Subnet Mask, and Gateway.

The server is online and is working fine.

I have installed Vmware Server, and installed Windows 2003 Server inside the VM.

My provider has given me 6 additional IPs. All the IPs are on a different Subnet than the Hosts. and the IPs do not have a gateway associated with them.

They state I can use the IPs to face externally by adding a secondary IP to my host machines TCPIP settings then set up IP forwarding

Here is what I have done:

Go into Advanced TCPIP settings on the host
Add the 1st IP in the list and its asosciated Subnet mask.

Change the registry setting on the host to allow for IP Forwarding

Start Registry Editor (Regedit.exe).
Locate and click the following key in the registry:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters
Set the following registry values:

Value Name: IPEnableRouter
Value type: REG_DWORD
Value Data: 1

NOTE: A value of 1 turns on (enables) TCP/IP forwarding for all network connections installed and used by this computer.
Quit Registry Editor

I then logged into the Virtual Guest OS,
setup the second Static IP in the list and the subnet mask, and for the gateway i used the first IP in the list (that i configured on the host OS)


This is not working.... what am I doing wrong!

VMware is set up to Bridged mode on ETH0:0

ANTEC 900 Gaming Case
AMD X2 4400+
OCZ 700W PSU
DFI LAN PARTY CROSSFIRE
ATI X1900 CROSSFIRE 512 MB
ATI X1900 SLAVE 512MB
2GB OCZ RAM


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#1
January 14, 2010 at 12:17:29
I would suggest those telling you this provide the documentation of how to accomplish it.

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#2
January 14, 2010 at 12:39:51
Their response is: we do not support VMware.

ANTEC 900 Gaming Case
AMD X2 4400+
OCZ 700W PSU
DFI LAN PARTY CROSSFIRE
ATI X1900 CROSSFIRE 512 MB
ATI X1900 SLAVE 512MB
2GB OCZ RAM


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#3
January 14, 2010 at 13:01:02
Nice avoidance on their part.

Ask them the same question and don't mention vmware. After all this is not a vmware issue.

You have a server with one interface but multiple ips. How do you get it to route on a single interface?

I don't believe this is possible and think these folks are blowing smoke. You need two interfaces to route/bridge though some proxy softwares like analogx can use a single interface.

Only other thought would be to take the ips without gateways and route/bridge them to the ip that does have a gateway. But this would mean the VMs would have the nongateway ips and somehow you would have to bridge from the VM nic to the host nic. Since the vms have no knowledge of the host again I don't see this as possible.


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#4
January 15, 2010 at 13:37:42
What they are saying is to make multiple IP addresses on the single nic on the physical server. You could use any of the IP's on the virtual machine too. You MUST have a gateway. Use the current IP's gateway would be my guess since it would most likely be in the same subnet.

Playing to the angels
Les Paul (1915-2009)


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#5
January 15, 2010 at 17:05:09
that's a lot of guesses and doesn't address how to bridge from a VM [virtual machine with an ip address on the virtual nic] to the physical server.

I think these guys are deliberately making this difficult if not impossible.

One ip with gateway and multiple ips with no gateway is a setup for software bridging/routing at a phyical level not a virtual one.


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