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Re: [Xen-users] Xen on multiple public IP's

> On 3/20/06, mrkris@xxxxxxxxxx <mrkris@xxxxxxxxxx> wrote:
>> Hiya list,
>> I am new to XEN and have been pulling out my hair trying to figure this
>> out. I have 25+ dedicated public IP's and a very nice server. I have
>> always been a security nut running openbsd as my primary server
>> operating
>> system, until I found XEN. I love XEN thus far and it's stability, but I
>> can't seem to get this working properly.
>> I want each separate dom to have a public IP. I have read the docs,
>> followed the tutorial here:
>> http://www.debian-administration.org/articles/360
>> I can't seem to get networking functioning properly on it. Do I want
>> bridge or route? Any help would be appreciated. If you need any
>> particular
>> info, please let me know.
>> thanks.
>> mrkris
> You would just need to run in bridge mode with each domU having an IP
> in the public range.  I would personally setup a firewall that mapped
> public IPs to nat-ed addresses, but that's just me.
> In your Xen scripts for each domU, are you giving them a public IP like
> this:
> # Network
> ip = ""   # Pretend this is public
> netmask = ""
> gateway = ""
> Are the domU machines being given IPs that are part of the same subnet
> as dom0? You will need to do this for bridged networking to work out
> of the box.

I am using Steve from steve.org.uk's xen scripts to generate the doms. I
do assign them a public ip with the appropriate ip, netmask and gateway.
Every IP on the system is sequential. x.x.x.230 is the system. If I read
the docs correctly, then x.x.x.231 would be the bridge ip, then x.x.x.232+
would be assigned to each dom, then each dom would have their gateway set
as x.x.x.231.

In the xend-config script I am going to want to use:

(network-script network-bridge)
(vif-bridge xenbr0)
(vif-script vif-bridge)

This correct?


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