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Re: [Xen-users] XCP and Amazon EC2-style networking

  • To: C V <rayvittal-lists@xxxxxxxxx>
  • From: Grant McWilliams <grantmasterflash@xxxxxxxxx>
  • Date: Sun, 14 Mar 2010 16:46:02 -0700
  • Cc: xen-users@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Sun, 14 Mar 2010 16:47:57 -0700
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On Sun, Mar 14, 2010 at 12:30 PM, C V <rayvittal-lists@xxxxxxxxx> wrote:
On EC2, each instance (Xen DomU) gets an internal IP address (usually 10.x.y.z) and also a public IP address which is NAT'ed to the internal IP address. I am assuming that this NAT happens in Dom0.

In XCP, the DomU VIFs are directly bridged to the physical network -- this would be the internal IP equivalent. I don't see any equivalent way to NAT the public IP address to the internal IP address. With xend-style networking it may have been possible to use network-nat or perhaps network-route
vi /etc/xen/xend-config.sxp
(network-script network-route)
#(network-script network-bridge)
#(network-script network-nat)

Is it possible in XCP?


So really all you want is for your public IP to be routed to your vif and back?

Grant McWilliams

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