Sorry Haywood, I simply forgot to mention them, those are very good
also, of course! 


Le mardi 18 novembre 2008 à 23:42 +0100, David Fernández a écrit :
> Haywood,
> 
> Just to complete the information provided by Vincent, there are other tools 
> that easy the creation and management of network scenarios based on UML that 
> can be useful for you, for example, have a look at:
> 
> * VNUML. http://www.dit.upm.es/vnuml 
> * MLN. http://mln.sourceforge.net/ 
> * Netkit. http://www.netkit.org/ 
> * Marionnet. http://www.marionnet.org/
> * VNE. http://ndl.uva.netherlight.nl/trac/vne 
> 
> You can find other references at: 
> http://www.dit.upm.es/vnumlwiki/index.php/References#Related_tools.2C_projects_or_initiatives
> 
> Best regards,
> David
> 
> -----Mensaje original-----
> De: root [mailto:[EMAIL PROTECTED] 
> Enviado el: domingo, 16 de noviembre de 2008 14:57
> Para: Haywood Floyd
> CC: user-mode-linux-user@lists.sourceforge.net
> Asunto: Re: [uml-user] Many eth interfaces on many UMLs
> 
> Hello Mr Haywood Floyd,
> It seems that the tool at http://clownix.net would also
> help you with your teaching, it can provide a new network
> topology much faster than with scripts that must be modified
> to adapt.
> Basicaly, a daemon does all the switching for all the interfaces
> of all the machines, and you can send commands to the daemon 
> to modify the topology or to create new machines or new taps.
> A machine is connected to the host at startup with no config
> on your part.
> I call it the admin network, I see on your scripts that your 
> admin network linking the host to your simulated network 
> comes into R5 only and you have to have routes to reach the 
> others, this implies that the host is a part of the studied
> network.
> I have chosen to have an admin network linking each machine
> to the host. And I try as much as possible to make this admin
> network not visible for the studied demoes. 
> The software currently availlable at clownix.net has its admin
> network go through eth0 which is a mistake since linphone takes
> eth0 address as ident. In next version, the admin network is
> the biggest eth: eth4 if there are 4 interfaces.
> The goal is to observe without interference with the admin 
> network.  
> 
> Another advantage: your students can play with a network, create
> new machines modify the topology, be root on each machine, all
> this without having root priviledges on the host.
> 
> Hope you try it!
> Bye
> Vincent Perrier
> 
> 
> 
> 
> 
> 
> Le dimanche 16 novembre 2008  11:26 -0200, Haywood Floyd a crit :
> > Mr lanas,
> > 
> > I teach basic network concepts using uml.
> > I am sending a script that i used to apply to build the network
> > topology for studies.
> > I think the script ideas will help you to build your topology.
> > I still working on better ways to do things, specially about create an
> > uml group for access /dev/net/tun device without switch to root or
> > give to file everyone privileges.
> > The script goes in a attached file. At the first lines is an ascii
> > draw showing the created topology.
> > 
> > I beg your pardon for my english.
> > I hope make myself clear and help you in some way.
> > 
> > Regards to all.
> > haywood floyd
> > 
> > 
> > 2008/11/14 lanas <[EMAIL PROTECTED]>:
> > > Hello all,
> > >
> > >  I'm looking at having at least 15 UMLs with each UMLs using 4 eth
> > > ports. The (primitive) way I'm using at the moment to launch a UML with
> > > four ports is like this:
> > >
> > > ./linux ubda=testfs.1 eth1=tuntap,,,192.168.1.201 
> > > eth2=tuntap,,,192.168.1.202 eth3=tuntap,,,192.168.1.203 
> > > eth4=tuntap,,,192.168.1.204 eth5=tuntap,,,192.168.1.205
> > >
> > >  Somehow this does not sound like a good idea if multiplied by 15, or
> > > even by more.  60 tap devices does not seems to sound good.
> > >
> > >  What would be the better approach at having this quantity of UMLs with
> > > that many eth interfaces per UML ?  Each eth interface in each UML has
> > > to be accessible from outside the host.
> > >
> > > Thanks for any comments/suggestions/ideas !
> > >
> > > Cheers.
> > >
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