Re: Testing Qos with Dynamips

Thanks Federico I will give a shot.

On Fri, Jul 17, 2009 at 12:15 PM, Federico Cossu
<federico.cossu_at_gmail.com>wrote:

> google is your friend molomo, start from here:
> http://www.blindhog.net/cisco-dynamips-with-linux-loopback-tap-interface/
>
> follow those instructions, after creating the tap interface on you
> system, connect it to
> dynamips devices:
>
> [[Router SW2]]
> model = 3640
> autostart = False
> slot0 = NM-16ESW
> F0/0 = SW1 F0/0
> F0/1 = SW1 F1/0
> F0/2 = SW1 F2/0
> F0/9 = NIO_tap:tap0
>
> in that case, the tap0 interface of your system can be pingable from
> the f0/9 interface, and from
> all your virtual network. f0/9 and tap0 of course they should be part
> of the same subnet.
>
> Install an http server like mini-httpd (or the one you prefer) and
> make it listening on the tap interface.
> on the root directory where the httpd server is, put a big file of the
> size you need, then you can copy
> it as for: copy http:://1.2.3.4/big_file.txt null:
>
> /R
>
>
> 2009/7/17 Molomo <letjedilakopa_at_gmail.com>:
> > Federico,
> > Thanks for the prompt response....I'm using GNS3 on Ubuntu 8.10 _Intrepid
> > Ibex_, do you know how I can implement solution two?
> > I'm still novice when on linux.
> >
> > Molomo
> >
> >
> > On Fri, Jul 17, 2009 at 11:50 AM, Federico Cossu <
> federico.cossu_at_gmail.com>
> > wrote:
> >>
> >> hi molomo,
> >> i faced the same problem and what i can tell you is that you can't
> >> without some hard work.
> >> moreover, i've got some strange behavior when using *ip sla* checks
> >> described here:
> >>
> >>
>
http://7200emu.hacki.at/viewtopic.php?t=7442&start=0&postdays=0&postorder=asc
&highlight=
> >>
> >> 1) anyway, for moving large files via http you can use the 3725
> >> platform instead of 3640,
> >> because there you can find a large flash: space where to store larger
> >> files.
> >>
> >> 2) you can also connect you virtual routers to a virtual interface on
> >> your system, attach an http server
> >> to this virtual interface and let it listening on, i've used
> >> mini-httpd and it works well.
> >>
> >> i did not practiced solution 1) but i've read somewhere it should work
> >> fine,
> >> 2) works fine too but it's a little more complicated even if makes you
> >> move files of any size you need.
> >>
> >> /R
> >>
> >>
> >>
> >> 2009/7/17 Molomo <letjedilakopa_at_gmail.com>:
> >> > Group,
> >> > I'm using dynamips for my prepartions, I have one challenge with
> testing
> >> > QoS, I cannot copy ios image between routers and hence cannot test
> >> > policing
> >> > or shaping. I can copy dhcp database but it is not big enough to cause
> >> > congestion on my serial links.
> >> >
> >> > Anyone had similar challenge and how did you overcome it?
> >> >
> >> > Rgds,
> >> > Molomo
> >> >
> >> >
> >> > Blogs and organic groups at http://www.ccie.net
> >> >
> >> >
> _______________________________________________________________________
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> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >> >
> >>
> >>
> >>
> >> --
> >> Faeddare pagu, sabidorla meda.
> >
> >
>
>
>
> --
> Faeddare pagu, sabidorla meda.

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Received on Fri Jul 17 2009 - 14:20:22 ART