Re: [Xen-users] how to assign public IP for different dom

[Simon Hobson <linux@xxxxxxxxxxxxxxxx>]

Pete Kay wrote:

> Within my local lan, I have a Centos box with 6 domU.  What I would 
> like to do is to be able to assign different public IP to each of 
> these dom.  Does anyone know how to do that?  What do I need to do 
> in my dom0 and in my local lan router to configure different ip for 
> each domU?
Sorry, but my crystal ball is on the blink - you'll have to specify 
what your problem is !
I can GUESS that your WAN router is doing NAT, and I can GUESS that 
you've actually got the public IPs assigned to you by your ISP. There 
really is nothing special to Xen here, all you need to do is 
configure your network in the same way you would configure a network 
of real machines, and configure your WAN router to do the inbound NAT 
mapping or routing as appropriate.

One option is to configure your WAN router to route the traffic 
without doing NAT - and then configure each machine with a public IP. 
If you want the machines to be multihomed (ie have address on the 
internal network as well as the public network), then I believe as 
recently as this week there have been one or two threads here on how 
to configure multiple networks on the Xen host and guests.
Or you can leave the NAT in place, configure each machine with an 
RFC1918 private address, and use a static NAT mapping in the router 
to forward traffic to the appropriate internal address.
--
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.

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