Re: [Xen-devel] creating a xen-local LAN - how? heeeeellp!

[Mike Wray <mike.wray@xxxxxxxxxx>]

Luke Kenneth Casson Leighton wrote:
> hi there,
>
> okay, i so somehow don't get this i am in need of quite a lot of help,
> but fortunately i'm quite bright so anyone who _can_ help me should only
> have to say things once :)
>
> i'm looking to set up a network-isolated set of xen guests.
>
> one or more of the xen guests will be running things like http
> and https clients and so what i would like to do is to run an
> HTTP and other proxies on the xen master.
>
> the proxies i aim to bind to the xen interface on the xen
> master, such that they will listen out for incoming requests
> from the xen guest virtual eth0 cards, and the proxies will
> be able to happily make outgoing connections on the _real_ eth0.
>
> i don't want to create an eth0:1 unless it's absolutely necessary.
>
> i dunno - how about i create a lo1 and get the xen-br0 to bind to that?
>
> would that do the trick?
>
> any hints and advice much appreciated.
You might find the vnet stuff recently checked-in to 2.0-testing
useful. Vnets provide virtual private lan segments to xen virtual
machines. From the point of view of a domain everything looks normal -
but in dom0 its traffic is wrapped inside a multipoint tunnel so it
cannot get at the real network - only its virtual private lan. This
works with domains on more than one machine.

It's pretty easy to set up, and if you want a machine to have
access to the physical network as well you just configure it
with 2 interfaces, one of them not on a vnet.

The code lives in tools/vnet, with instructions in tools/vnet/doc.

Mike


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