Multiple guests with RRAS persistent-connection only allow one to work

[Jonas]

Hi,

I have a Virtual Server 2005 host in which I run 4 different guests OSes
with Windows 2003. Each of these guests have a Routing and Remote Access
configured for a persistent connection to the same external VPN Server. The
problem is that I can only have one
of these connections alive at a time. As soon as I try to connect in the
second guest, the connection in the first goes down.

First I had all the guest using the same Virtual Network, ie the same
physical NIC, but I have also tried to set them to use different Virtual
Networks, even different physical NICs, but it didn't help.

Is this a problem with RRAS? I have also posted in the Virtual Server
newsgroup but no clues yet.

TIA

Jonas

 

[Bill Grant]

Hi,

I have a Virtual Server 2005 host in which I run 4 different guests
OSes with Windows 2003. Each of these guests have a Routing and
Remote Access configured for a persistent connection to the same
external VPN Server. The problem is that I can only have one
of these connections alive at a time. As soon as I try to connect in
the second guest, the connection in the first goes down.

First I had all the guest using the same Virtual Network, ie the same
physical NIC, but I have also tried to set them to use different
Virtual Networks, even different physical NICs, but it didn't help.

Is this a problem with RRAS? I have also posted in the Virtual Server
newsgroup but no clues yet.

TIA

Jonas

1. Are the guest machines unique installations, or did you simply clone one
OS installation? Cloned machines all have the same MAC address for the NIC
and would behave like that.

2. How are the virtual machines networked? I would expect them to be set to
use the physical NIC in the host computer. If you put them in a different
virtual network they will not be able to get out to the Internet.

3. Are you connecting these machines using router-to-router VPN with
demand-dial interfaces at both ends of the connection?

4. What exactly happens when you initiate the second connection? (ie what
does "the connection in the first goes down" mean?)

 

[Jonas]

See below

1. Are the guest machines unique installations, or did you simply clone one
OS installation? Cloned machines all have the same MAC address for the NIC
and would behave like that.

The guest machines are indeed unique installations, with different SID and
MAC-addresses.

2. How are the virtual machines networked? I would expect them to be set to
use the physical NIC in the host computer. If you put them in a different
virtual network they will not be able to get out to the Internet.

One of the guests uses the Virtual Network 1 which in turn uses primary
physical NIC,
and the other guest one uses the secondary physical NIC.

3. Are you connecting these machines using router-to-router VPN with
demand-dial interfaces at both ends of the connection?

I'm not sure if I'm answering the question but my guests are VPN clients
that connects
to a VPN server, it is always the clients that initiate the connection.

4. What exactly happens when you initiate the second connection? (ie what
does "the connection in the first goes down" mean?)

The VPN for the second connection is no longer available for pinging, and it
gets the
status "Unreachable" in RRAS.

 

[Jonas]

I have now tried to recreate the interface in one of the machines with a
name different from the other, which did not help. I also tried to set up a
VPN client in another physical machine (my laptop), and when I connected it
to the VPN Server, the previous connection in one of the guest machine was
disconnected. I think this confirms that it probably has nothing to do with
Virtual Server.

/Jonas

 

[Bill Grant]

I agree with that. I would suspect your router/firewall.