RES: [Xen-users] Connecting dom0's with VPN?

[Bruno Bertechini <bruno.bertechini@xxxxxxxxxxx>]

Hi Steve,

After read your post, I was very interested on the structure you have
realized for this situation.

Can you please post more information about it? I mean, explain the details
behind your configuration to use crossover cables to "share" and use drbd
and heartbeat?

We have 03 hosts with powerfull machines and this solution seems to be very
useful...

Thanks in advance!!!

Regards

Bruno Bertechini

-----Mensagem original-----
De: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] Em nome de Steve Wray
Enviada em: quinta-feira, 18 de setembro de 2008 21:30
Para: xen-users@xxxxxxxxxxxxxxxxxxx
Assunto: [Xen-users] Connecting dom0's with VPN?

Hi there,

I have two dom0 hosts with two network interfaces.

One of those interfaces is configured with an IP address and is the 
'service entrance' for maintenance of the host.

The other interface is allocated to the Xen bridge and does not have IP 
addresses assigned to it.

The two dom0 hosts are connected on this interface with a crossover 
cable. This forms a network for the domU virtual machines on each dom0 
and some of these domU machines replicate disk via this crossover cable 
with drbd and also do heartbeat monitoring.

So far this is all working perfectly.

I would like very much to be able to seperate the two physical hosts and 
to temporarily place them into different facilities.

A really really long crossover cable is out of the question.

What I am thinking of is creating a VPN between the two machines however 
I'm not sure how to do this.

I am thinking that if I create a VPN tunnel between the two sites and 
then connect the bridged interface to the VPN this won't work. Or will 
it? Remember that the bridged interface itself doesn't have an IP 
address. And I'm not sure how OpenVPN would react to passing packets 
from the Xen bridges.


Can anyone please offer any suggestions as to how to create a tunnel 
between these two hosts (to simulate the crossover cable)?

Thanks!




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