[uml-devel] Re: What to do with uml_switch?

["Steve Schmidtke" <steve_schmidtke@hotmail.com>]

Gerd Knorr wrote:
> >   3) can create *multiple* switches and keep them seperate
>
>Hmm, not sure I like that idea.  Is this with vlan tagging support?
>How can this be configured?  Is the command mode the only way, or can
>you also use some config file or command line switches for that?

I thought about adding vlan support, but then realized if I wasn't going to 
code up some sort of multi-membership system (union ports?), it would be 
simpler just to run multiple uml_switches.  It should be obvious I don't 
know what I'm talking about, so I left it alone. :)

> >   4) can record all packets to a .pcap file
> >   5) can play packets from a .pcap file at a given rate
> >      (or under command line interface control)
> >   6) can optionally answer ARP queries for imaginary nodes.
>
>Hmm, I don't think it is a good idea to put that kind of testing code
>into the switch daemon.  I'd make the switch daemon behave as close as
>possible to a real switch, then use the normal tools you use for real
>networks as well.  I think uml_switch should just support a monitor port
>which will see all traffic (even the switched one), that is the usual
>way how it's done on physical hardware.

I'm eating my own dog food (since I too suggested a monitor port), and I've 
coded up a framework for doing just that.  I need to test it more before 
submitting a patch for review and comment.

Steve Schmidtke




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