[ovs-discuss] Namespaces connectivity through OVS

Scott Lowe scott.lowe at scottlowe.org
Fri Mar 18 21:24:14 UTC 2016


Please see my responses inline, prefixed by [SL].


> On Mar 18, 2016, at 12:09 PM, Rajasekaran, Monica <Monica.Rajasekaran at us.fujitsu.com> wrote:
> 
> Hi Scott,
> 
> It is connected to an ODL controller. Is there a way to disable OVS learning by itself? I only want it to know if I add flows.


[SL] I am pretty sure there is a way, but I am not familiar with how to enable that functionality (I haven't personally seen the behavior you're describing). Setting the OVS fail_mode to "secure" might help, see "man 5 ovs-vswitchd.conf".


> Thanks,
> Monica 
> 
> 
> -----Original Message-----
> From: Scott Lowe [mailto:scott.lowe at scottlowe.org] 
> Sent: Friday, March 18, 2016 11:08 AM
> To: Rajasekaran, Monica <Monica.Rajasekaran at us.fujitsu.com>
> Cc: discuss at openvswitch.org
> Subject: Re: [ovs-discuss] Namespaces connectivity through OVS
> 
> Please see my response below.
> 
> 
>> On Mar 17, 2016, at 3:50 PM, Rajasekaran, Monica <Monica.Rajasekaran at us.fujitsu.com> wrote:
>> 
>> Hi,
>> 
>> I have two name spaces (10.0.0.1 and 10.0.0.2) connected via OVS. How do they resolve and reach each other though I have not added any flows inside OVS ? Attached image for reference. Both namespaces and OVS are inside my Ubuntu VM.
> 
> 
> Hi Monica, you didn't indicate (as far as I can tell) if OVS is connected to a controller. It's my understanding that, by default, when OVS is not connected to a controller it will act as a learning switch.


-- 
Scott




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