From: Piyoush Sharma (piyoush@gmail.com)
Date: Mon Apr 07 2008 - 18:46:45 ART
I've been running dynamips as per IEWB topology.. - thats 14 routers incl
the terminal server on a quad-core Q6600 with 3gig ram... no ghostios etc...
and it works without a hitch... all the way thru BGP...
even when i start all routers at once, the CPU usage remains at 75%. Max
i've seen is 85% and that was when I was trying varied cmds and ended up
with deliberate routing/switching loops..
Its all abt the idlepc values.. Dynamips + idlepc work wonders on a quad
core. Earlier I tried the same topology on a dual-core, I did have some
issues, like EIGRP routes flapping when fully loaded. But I think that was
the older dynamips variant.
Anyways, 'd say its a wonderful way to save on the cost of rack rental
initially - ofcourse if you do not have the pc, building something so
powerful can be a bit expensive.. but worth the effort.. considering the
same can be used for almost all CCIE related studies and rack practice.
Gary: the only fine tuning I've had to do was idlepc values... which took
all of 10mins.. the 3rd value it came up with worked wonders!!!
Piyoush.
On Mon, Apr 7, 2008 at 2:32 PM, Dale Shaw <dale.shaw@gmail.com> wrote:
> I'm running dynamips without too much trouble on a circa 2004 IBM
> ThinkPad T42p (2.0GHz single core, 1GB RAM).
>
> Admittedly I'm not pushing it hard, usually only having 4-5 images
> running at once, using a single hypervisor.
>
> You obviously need to get the idlepc/idlemax stuff under control.
> Otherwise, it'll eat all system resources in sight.
>
> Oh yeah, I run Linux. dynamips seems much happier on Linux.
>
> dale@buzzsaw:~$ uname -a
> Linux buzzsaw 2.6.22-14-generic #1 SMP Tue Feb 12 07:42:25 UTC 2008
> i686 GNU/Linux
>
> cheers,
> Dale
>
> On Tue, Apr 8, 2008 at 7:11 AM, Gary Duncanson
> <gary.duncanson@googlemail.com> wrote:
> > Surprised to hear this. Being old school I have battered on with my rack
> but
> > otherwise I would have gone this route (no pun intended).
> >
> > Any fine tuning required?
> > ----- Original Message ----- From: "Joseph Brunner"
> > <joe@affirmedsystems.com>
> > To: "'Cockcroft, Lance'" <lc3881@att.com>; <ccielab@groupstudy.com>
> > Sent: Monday, April 07, 2008 8:44 PM
> > Subject: RE: Dynamips on Laptop
> >
> >
> >
> >
> >
> > > I'm having a miserable time with SDM/IPS with a virtualized 3725.
> > >
> > > Dynamips sucks for anything but simple eigrp/bgp routing.
> > >
> > > The moment you start using anything other than that, it CRAWLS even
> with
> > > only 1 router running (on a very very powerful pc)
> > >
> > > -Joe
> > >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of
> > > Cockcroft, Lance
> > > Sent: Monday, April 07, 2008 3:36 PM
> > > To: ccielab@groupstudy.com
> > > Subject: Dynamips on Laptop
> > >
> > > Anyone SUCCESSFULLY running dynamips with FULL labs on a dual core
> > > laptop.
> > >
> > > If so please let us know your specs.
> > >
> > >
> > >
> > > Thanks,
> > > Lance Cockcroft
>
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