[ovs-discuss] FW: saving rules into the database

[Eyal Nissim]

Hi, 

Now that I've done some research about it, I think that I've finally reached some conclusions
Please correct me if I'm wrong:
1. Vswitch is controlled by the remote controller, and it's the remote controller that is responsible for configuring the flows for the vswitch
2. The database is NOT  configured by FLOWS, applications such as ovs-vsctl (i.e controllers)configure port or interface related features in the database (such as QoS, STP,CFM)
    These are supposed to be read by vswitch at startup (or on the fly if configuration was made on the fly)
    Later on, when the controller sends FLOWS to vswitch the add flow command also contain parameters which attach the flow to interfaces ports Queues and other things
   That's how the connection between the previous configurations and the actual flows is done

Thanks
    

-----Original Message-----
From: Eyal Nissim 
Sent: Sunday, July 20, 2014 11:32 AM
To: 'Ben Pfaff'
Cc: discuss at openvswitch.org
Subject: RE: [ovs-discuss] saving rules into the database

Hi, 

Thanks for the answer,
Just to make sure that I understand your answer:
you're saying that the vswitch is actually controlled by the remote controller and it is The remote controller that is responsible for configuring the flows for the vswitch right?


Is the remote controller also responsible for saving the rules in the database? 
or is the database not meant to save any rules/flows?  

Thanks
Eyal


-----Original Message-----
From: Ben Pfaff [mailto:blp at nicira.com]
Sent: Thursday, July 17, 2014 7:48 PM
To: Eyal Nissim
Cc: discuss at openvswitch.org
Subject: Re: [ovs-discuss] saving rules into the database

On Thu, Jul 17, 2014 at 01:17:07PM +0000, Eyal Nissim wrote:
> When running vswitch I noticed that the rules are NOT written to the 
> database (I executed the following command:  ovsdb-client dump 
> -format=list -data=json) So all my configurations are lost after reset
> 
> Any ideas what can be done about it?

The expectation is that the OpenFlow controller should refresh the flow table.
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