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Re: [Xen-devel] XenLoop - Inter-VM Network Loopback

To: Kartik Gopalan <kartik@xxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] XenLoop - Inter-VM Network Loopback
From: Daniel Stodden <stodden@xxxxxxxxxx>
Date: Sun, 10 Feb 2008 20:41:18 +0100
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On Sat, 2008-02-09 at 21:07 -0500, Kartik Gopalan wrote:
> We recently developed XenLoop -- a transparent inter-VM
> network loopback mechanism. XenLoop allows unmodified
> network applications to bypass the standard
> network data path via Dom0 when talking with
> other guest VMs on the same machine.

I'm not yet through with it, and promise I'll try to deliver more useful
comments soon. But here's the first thing which kinda bewilders me:

A loopback sends packets back to the originator. Hence the name. You
propose point-to-point links. A bunch of virtual crossover cables,
similar to the original association between backends and frontends. So
naming it 'XenLoop' is kinda misleading.

kind regards,

PS: I hereby admit that XenCross sounds plain stupid. :)

Daniel Stodden
LRR     -      Lehrstuhl für Rechnertechnik und Rechnerorganisation
Institut für Informatik der TU München             D-85748 Garching
http://www.lrr.in.tum.de/~stodden         mailto:stodden@xxxxxxxxxx
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