[ncolug] Re: Need recommendations

  • From: "M. Knisely" <charon79m@xxxxxxxxx>
  • To: ncolug@xxxxxxxxxxxxx
  • Date: Tue, 17 May 2011 10:25:00 -0400

I've had poor performance running anything more than two machines at a time
on a USB connected HDD.  I've not yet tried this on USB3.0.

Mike K.

On Tue, May 17, 2011 at 10:16 AM, C Olson <techconsultant4u@xxxxxxxxx>wrote:

>  Try using usb hard drives for each student that might work starting with
> the live cd and then building on a usb hdd.
> Cory
> "For all the ways in which technology has failed to improve the quality of 
> life, please press three." --Alice Kuhn
> On 05/17/2011 09:09 AM, M. Knisely wrote:
> Sorry I've not yet chimed in on this.  My take on this is that live CDs,
> while handy teaching tools, do not provide what is trying to be
> accomplished.  What I, and I think Chuck, would like to see is a portable
> demonstration toolkit.  Something that a student can build as they go
> through the curriculum, much like an artist's portfolio.
>  Because of the licensing limitations like VMWare, it does not lend itself
> to this portable idea.
>  For the "live data" aspect, I've been kicking around using tcpreplay and
> a slim VM to generate this traffic.  Worth a look.
>  Mike K.
> On Sun, May 15, 2011 at 1:51 PM, Chuck Stickelman 
> <cstickelman@xxxxxxxxxx>wrote:
>> Howdy all!
>>  Rob, Mike K., myself, and others have been talking about ways to
>> improve the networking technology used in the CIS program @ North
>> Central State College.  We are currently using VirtualBox as a platform
>> for the students to install and learn various operating systems, and to
>> use those systems to study and learn networking topics.  The VMs
>> created/used in one class are not generally available for subsequent
>> classes or quarters.
>>  The goal is to design a solution where the students can develop their
>> own persistent virtual networks.  As they progress through the program,
>> they would install multiple virtual machines as client systems (Windows,
>> Linux, and others), and others as servers (Windows, Linux, and others).
>> They would also build-out their virtual networks with Virtual Hubs,
>> Switches, Routers, Wireless Access Points, etc.
>>  One of the things I would like to see in this environment is the
>> ability to run multiple VMs that would simulate real-world systems.
>> These systems would generate simulated network traffic, with simulated
>> users sending simulated e-mail, transfering simulated files, browsing
>> the (simulated?) Web, etc.  These machines would not need a GUI, or any
>> real user-oriented applications; all simulated traffic would be
>> scripted.
>>  Since there could be many of these machines running at the same time,
>> they would need to have a very small memory and CPU foot-prints.  Fast
>> boot-times would also be nice.
>>  There are multiple ways that this solution could be implemented; for
>> each VM we could use:
>> 1) bootable floppy images
>> 2) LiveCD/DVD images
>> 3) PXE and boot the VMs from a virtual server
>> 4) virtual hard drives
>> 5) something like OpenWRT for Intel/AMD CPUs
>>  If we are going to have multiple copies of the boot media, then it
>> should be relatively small.  If we are using one shared, read-only file
>> as our boot device, then size may not matter, as much.  I have found
>> that multiple VirtualBox VMs can use a shared, bootable ISO file as
>> their CD/DVD drives.
>> Thoughts? Ideas? Suggestions?
>> Chuck
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