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[mininet-discuss] Enable / disable switches

Aaron Rosen arosen at clemson.edu
Mon Oct 24 18:02:48 PDT 2011


Hi Bob,

I wanted to test my controller working in a chancing topology. I think just
having a large topology and then just changing my flowspace is probably the
easiest solution. I was just curious if mininet already had some features
for this built in.

Cheers,

Aaron


On Mon, Oct 24, 2011 at 8:54 PM, Bob Lantz <rlantz at cs.stanford.edu> wrote:

> Aaron,
>
> What exactly are you trying to do and why? If I have a better understanding
> of what you're trying to do, I might be able to suggest something.
>
> I think we discussed this before but didn't adopt it because there weren't
> obvious clear semantics that had an analog to hardware (e.g. unplugging a
> cable, breaking a cable, turning a port off administratively, shutting the
> switch down, etc..)
>
> As Brandon implied, you *could* "pause" the reference user switch by doing
> something like switch.cmd('kill -STOP %ofdatapath %ofprotocol'), but I would
> think carefully about whether this is what you really want.
>
> My thinking is that the right way to disable a port is for the controller
> to set it to administratively down by sending a OFPT_PORT_MOD message
> (assuming that works.)
>
> -Bob
>
> On Oct 24, 2011, at 3:05 PM, Brandon Heller wrote:
>
> I'm not aware of an easy way.
>
> By disable, do you mean pausing the user-space process for a switch, or
> killing the whole thing?  Using a user-space switch would certainly make
> this kind of thing easier.
>
> -b
>
> On Mon, Oct 24, 2011 at 2:45 PM, Aaron Rosen <arosen at clemson.edu> wrote:
>
>> Hello,
>>
>> Sorry if this has already been asked but is there is a way to easily
>> disable end enable switches (maybe event ports? )  easily through mininet?
>>
>> Thanks,
>>
>> Aaron
>>
>> P.S: I suppose you could easily do this with flowvisor pretty easily if
>> not directly through mininet.
>>
>>
>> --
>> Aaron O. Rosen
>> Masters Student - Network Communication
>> 306B Fluor Daniel
>>
>>
>>
>> _______________________________________________
>> mininet-discuss mailing list
>> mininet-discuss at lists.stanford.edu
>> https://mailman.stanford.edu/mailman/listinfo/mininet-discuss
>>
>>
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>
>


-- 
Aaron O. Rosen
Masters Student - Network Communication
306B Fluor Daniel
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