Re: Connecting Dynamips routers on a Laptop with real switches

Hi,

I would like to concur with Pramod about the USB converters. I've
experienced problems when using many USB-Ethernet Converters myself, a small
number work fine but when you start to ramp up the number the stability goes
out the window.

A breakout switch can certainly work well - this is what I used in my
environment but depending on the breakoutswitch you have, you may experience
limitations. For example with a 3550 l2protocol tunnelling is not supported
on trunk interfaces but is on a 3560 or 3750. This will result in
unidirectional CDP from your switches beyond the breakout to work (So you
can see the switches from your Routers) but not in the other direction (The
switches wont have the routers as CDP neighbors). STP is a similar issue
which I recently discovered while playing with IRB
http://noshut.blogspot.com/2010/09/breakout-switches-and-irb-dont-play.html

As long as you are aware of the limitations, the set up works fine in most
instances and you can rent time on real gear for specific labs if you are
unable to resolve it another way.

Cheers,
Adam

On Mon, Sep 27, 2010 at 7:18 PM, Pramod G <learn02earn_at_gmail.com> wrote:

> Hi Prakash,
> It is possible with either of the options
>
> Need 12 USB to LAN Converter (personal experience they aren't stable...got
> blue screen error while working) OR
> - One switch configured as break out switch
>
> You can find more details on dynamips forum
>
> Thanks
>
> On Mon, Sep 27, 2010 at 2:32 PM, Prakash B <prakash.networks_at_gmail.com
> >wrote:
>
> > Dear Experts,
> >
> > I am going to start my lab preparation. I am planning to practice INE /
> > Narbik workbook with dynamips and later buy 3550 switches to connect with
> > dynamips routers for practicing basic switching topics. To practice the
> > 3560
> > specific features I am planning to rent a rack.
> >
> > For portability reasons, I prefer to buy a dedicated Laptop with i7
> > processor - windows platform rather than a PC if there is a way to
> connect
> > the laptop to the 4 real switches successfully.(via USB hub (LAN adapter)
> > or
> > somehow). Kindly advise me whether it is possible with a laptop. Or
> > possible
> > only with a PC that has Quad ports?
> >
> > Many Thanks!
> > Prakash
> >
> >
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>
> --
> Hi
>
>
> Rgds,
>
> It does not mean a thing, if it can't make a ping!! :-)
>
>
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Received on Mon Sep 27 2010 - 21:56:53 ART