RE: [Xen-users] Multiple NIC and ports in XEN source and XEN enterprise

["Venefax" <venefax@xxxxxxxxx>]

I decided to assign a physical NIC to every DOMU, to minimize bottleneck,
since my app is a telephony softswitch, and depends on network IO. I have 8
NICS in the box and 8 softswitches.

The question is, how can I do that? Also, is there a way to measure the
network IO that each domu is generating, using dom0. I mean, without
installing any software on domu's, only by looking at dom0?
I have also heavy network traffic between domu's. How can I optimize that?
Some of the domu's are in different networks, and I noticed that the packets
go out on the internet and come back, which is ridiculous. How can that path
be shortened? I imagined that since the mac addresses are local, XEN would
be able to send it directly to the destination, is that even possible?
Finally, what brands are there for Virtualization-aware NICs? Maybe I will
buy one.


-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Fischer, Anna
Sent: Monday, June 23, 2008 5:07 AM
To: D.Kalogeras@xxxxxxxxxxx
Cc: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: RE: [Xen-users] Multiple NIC and ports in XEN source and XEN
enterprise

> From: Dimitrios Kalogeras <D.Kalogeras@xxxxxxxxxxx>
> Subject: [Xen-users] Multiple NIC and ports in XEN source and XEN
>         enterprise
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Message-ID: <485B97DA.6040309@xxxxxxxxxxx>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hi *
>
> I am trying to figure out the current limitations of XENsource in
> comparison  to XEn enterprise  with regard to the number of multiple
> and
> ports supported by either XEN source and/or XEn enterprise in DOM0 and/
> or DOMU .
>
> Some time ago In the mailing lists it was mentioned the max number of
> available usable ports is 6 but it was not mentioned whether it is for
> the DOMU or DOM0 or both.

The latest Citrix XenServer enterprise version supports 6 physical NICs per
host (DOM0) and 7 VNICs per VM (DOMU).

I think open source Xen supports 3 VNICs per VM, but I don't know of any
limits for physical NICs per host.


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