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[mininet-discuss] ovs-vswitchd support?

Bob Lantz rlantz at cs.stanford.edu
Tue Oct 25 14:45:10 PDT 2011


Agreed on the startup time issue; when the reference kernel switch was abandoned and we had to switch to Open vSwitch, Mininet startup got a lot slower, which was unfortunate.  ;-(

-Bob

On Oct 25, 2011, at 9:46 AM, Brandon Heller wrote:

> Hi Rob,
> 
> It would be great if you could try to spin one up.  OVS is certainly moving away ovs-openflowd and it would be nice to have MN install out of the box on OVS 1.2+, without using deprecated stuff.
> 
> The possible downside is that if I understand it, OVS w/vswitchd starts up a database process, which at least sounds heavier-weight than the ovs-openflowd.  So rather than completely deprecate it immediately, I would want to see a test that measures practical effect on startup time for increasing numbers of switches, w/a patch that allows user choice until any decision is made.  This could be a simple shell script with a for loop that runs something link 'time mn --ovs_vswitchd --topo linear,x' for different numbers of x.
> 
> If you can send the patch over, I'd be happy to test it.  If you go ahead, please fork from the mininet master branch, which is now on GitHub.  If you send a pull request, we can even try out GH's code review system:
> 
> https://github.com/mininet/mininet
> 
> -b
> 
> On Mon, Oct 24, 2011 at 9:58 PM, Rob Sherwood <rob.sherwood at bigswitch.com> wrote:
> Hi all,
> 
> Poking through the mininet archives, I've seen a few people asking
> about ovs-vswitchd support in mininet: did anyone actually make a
> patch?
> 
> If no, I think I will try to spin one up, because at least according
> to the NEWS file in OVS, the ovs-openflowd method is no longer being
> supported (and has been deprecated to "test-openflowd" in 1.2 and post
> 1.2 has even been removed).
> 
> 
> Bob, Brandon: what are your thoughts about me completely deprecating
> the ovs-openflowd and making the 'ovsk' mininet switch target just
> invoke ovs-vswitchd (and the corresponding database process,
> ovsdb-server) as the ovs folks now prescribe?
> 
> Please let me know and thanks,
> 
> - Rob
> .
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