Re: [Xen-users] newbie question

[Simon Hobson <linux@xxxxxxxxxxxxxxxx>]

bofh wrote:

> I want to create my VMs to use one (or more) of the four interfaces
>
> a)  non-routed self contained class C (192.168.100.0/24)
> b)  non-routed self contained class C (192.168.200.0/24)
> c)  natted interface to eth0 (so that I can "hide" behind a NAT)
> d)  bridged interface to eth0 (so that I can pick up a live IP off the wire)
>
> So d) sounds like I just create a bridge, and point my VMs to the
> bridge.  OK, easy enough.
Ditto a and b - just create extra bridges for them.

For c, you can run a DomU that does the routing/filtering function 
between d and a/b. That's what I have at home, a DomU takes the place 
of the traditional little white box - except that the outside is now 
a PPPoE interface, it used to be a dedicated NIC using pciback.hide 
etc.
>  >> 6)  I have 16Gigs of ram, should I really limit dom0's ram to 2G or
> > >  4G?
> >  Probably less. Apparently various tables are sized at boot time according to
> >  total RAM. So limiting RAM to what is actually needed results in these
> >  tables being sized accordingly. Besides, it avoids resizing Dom0 memory
> >  every time you start/stop a guest.
> Since this is my laptop, I'm thinking of using dom0 for my primary
> desktop too :P :P :P :P
That's different then. No need to limit RAM and whatever you aren't 
using for guests will be available for you.
>  > PS - BOFH ? Surely an imposter.
>
> Hmm, what was your email address again?
But my **name** is Simon ;-)

--
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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