Date: Thu, 3 May 2007 00:08:26 +0200 From: Marko Zec <zec@icir.org> To: freebsd-net@freebsd.org Cc: youshi10@u.washington.edu Subject: Re: Unix friendly network testbench for FreeBSD? Message-ID: <200705030008.26978.zec@icir.org> In-Reply-To: <Pine.LNX.4.43.0705021440350.1519@hymn01.u.washington.edu> References: <Pine.LNX.4.43.0705021440350.1519@hymn01.u.washington.edu>
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On Wednesday 02 May 2007 23:40:35 youshi10@u.washington.edu wrote:
> On Wed, 2 May 2007, Chuck Swiger wrote:
> > youshi10@u.washington.edu wrote:
> >> Hi,
> >> I'm looking for a network testbench / simulator to stimulate
> >> known networking conditions to test out a component for a product
> >> at work. I was wondering if there was a network simulator
> >> available (preferably open source) that's FreeBSD / Linux
> >> compatible which I can simulate as real of a network as possible
> >> on a virtual machine / network.
> >
> > Dummynet or ALTQ might be good starting points, as is netgraph,
> > depending on just what you're trying to do. There are also
> > userland benchmark/analysis tools like flood pinging, netperf, & ab
> > ("apache bench").
> >
> > --
> > -Chuck
>
> Hmmm... ok, expanding on that what I was looking for was a means to
> simulate semi-realtime delays across a virtual network with 4+
> virtual machines. Is it possible to use Dummynet in this case, or do
> I need to look into something else?
You can use IMUNES for emulating arbitrarily complex network topologies
with hundreds of nodes, with each virtual node beheaving like an
independent FreeBSD box, if that's what you are after.
www.imunes.net -> it's still based on an aging but rock solid 4.11
kernel, with a version that will run on 7.0-CURRENT expected to become
available in the next month or so.
Marko
> Other conditions I planned on imposing are non-locking NFS (causes a
> lot of issues here with files at work), and have SUSE 32-bit clients
> (host OS of choice at work) if possible connect to the host machine
> and with one another, executing make jobs.
>
> Any further suggestions on how to do this?
>
> Thanks,
> -Garrett
>
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