Re: [Xen-users] Internal network Configuration

[Simon Hobson <linux@xxxxxxxxxxxxxxxx>]

Please stop top posting, it is very annoying. Hint, don't deliberately annoy 
people youa re asking to help you !

On 9 Jul 2016, at 15:04, Jason Long <hack3rcon@xxxxxxxxx> wrote:

> Physical port? Is you mean Virtual Adapter?

No, when I wrote physical port, I meant physical port - or I would not have 
written that.

A bridge can have an arbitrary number (including zero) of interfaces connected 
to it.
The typical basic setup connects a physical port (eg enp4s0 from your list 
below) to the bridge as it's being created - and this allows you to plug the 
physical port on the host into the network switch/router so that guests can 
communicate with "the outside world".
If you don't connect any physical port to a bridge then guests can use that to 
communicate between them (and with Dom0 if you allocate an IP address to it) - 
but they cannot use that bridge to communicate outside of the host.

> 
> # ifconfig
> 
> br1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
> ...
> virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
> ...
> 
> I guess "virbr0" is a good option.

Why ? You've used br1 earlier, and I suggest you use one naming scheme and keep 
to it. It doesn't really matter what you call a bridge - but for your own 
sanity it makes sense to use consistent names.

> Can I use "virbr0" for more than one VM?

You can connect an arbitrary number of ports (whether physical or virtual) to a 
bridge. So yes, you can connect the VIFs from multiple VMs to one bridge.


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