[ovs-discuss] how to initialize openvswitch in listen mode

[Ben Pfaff]

A bridge and a switch are the same thing.

On Mon, Sep 12, 2011 at 04:42:49PM -0700, Aishwarya wrote:
> Hi ben,
> 
> Thanks for your input. I was confused because as you said, the man page
> suggests all the connection methods, but when i use for eg:
> 
> ofctl show br0, it is connecting to a bridge right? A single openvswitch can
> also have more then one bridge, so in that case, if I want to connect to the
> switch as a whole, how different will it be? I guess I am just a little
> confused between the switch/bridge terminologies.
> 
> Thanks,
> Aish
> 
> On Mon, Sep 12, 2011 at 3:48 PM, Ben Pfaff <blp at nicira.com> wrote:
> 
> > Please read the ovs-ofctl manpage.  It explains all the allowed forms
> > at the very top.
> >
> > Of course a Unix socket doesn't work on another machine.  Add a
> > "ptcp:" controller to access OpenFlow over TCP from another machine.
> >
> > On Mon, Sep 12, 2011 at 03:43:25PM -0700, Aishwarya wrote:
> > > Hi Ben,
> > >
> > > That is correct. Right now, I am doing it from the same machine running
> > > vswitchd. The ofctl doc says the argument should be show *switch*
> > >
> > > and the methos of connection seemed to me like I need to give the switch
> > > argument as unix:... or tcp:.... . Is my understanding wrong? (is it
> > > different if I need to connect to the switch from a different machine?)
> > >
> > > Thanks,
> > > Aish
> > >
> > > On Mon, Sep 12, 2011 at 3:38 PM, Ben Pfaff <blp at nicira.com> wrote:
> > >
> > > > It sounds like you want to use ovs-ofctl from the same machine running
> > > > ovs-vswitchd.  There's already a unix socket for that.  Just give the
> > > > name of the bridge, e.g. "ovs-ofctl show br0".
> > > >
> > > > On Mon, Sep 12, 2011 at 03:37:19PM -0700, Aishwarya wrote:
> > > > > Hi Ben,
> > > > >
> > > > > Passive tcp socket should be fine. I know the ptcp option lets you do
> > > > this.
> > > > > But I am not sure which command to use it with. For eg: I use the
> > unix
> > > > > socket option with ovsdb-server command so that vswitchd can connect
> > to
> > > > teh
> > > > > database server. Now, ofctl needs to connect to the switch. So, which
> > > > > command do I use the ptcp option with so that the switch is listening
> > on
> > > > a
> > > > > tcp port that ofctl can connect to. Right now, when i do an ofctl
> > show
> > > > > tcp:127.0.0.1, i get a connection refused error.
> > > > >
> > > > > Thanks,
> > > > > Aish
> > > > >
> > > > > On Mon, Sep 12, 2011 at 3:32 PM, Ben Pfaff <blp at nicira.com> wrote:
> > > > >
> > > > > > On Mon, Sep 12, 2011 at 03:29:38PM -0700, Aishwarya wrote:
> > > > > > > The ovs-ofctl uses either a unix socket or tcp port to connect to
> > the
> > > > > > open
> > > > > > > flow switch. When I start the openvswitch process, which command
> > do i
> > > > use
> > > > > > to
> > > > > > > set the switch in the listen mode so that ofctl can connect to
> > it?
> > > > > >
> > > > > > Do you want to connect to ovs-ofctl over a unix socket or a tcp
> > > > > > socket?
> > > > > >
> > > >
> >