Re: [ovs-discuss] Register one OVS bridge to 2 unrelated controllers...

[Sterdnot Shaken]

Great! In reading about this feature (thanks to your response), it looks
like the controller needs to present a connection id to OVS, which it will
only do if it supports the "NXT_SET_CONTROLLER_ID Nicira extension". Anyone
by chance know if this extension is something Opendaylight supports? If
not, no worries, I can ping their mailing list about it.

Thanks for the quick reply Ben!

On Wed, Jan 4, 2017 at 11:18 AM, Ben Pfaff  wrote:

> On Wed, Jan 04, 2017 at 11:05:07AM -0700, Sterdnot Shaken wrote:
> > Can you register one OVS bridge to 2 separate controllers and then, using
> > flow's, send some traffic to one controller and send some traffic to the
> > other one?
> >
> > something like:
> >
> > ovs-ofctl add-flow br0 priority=10,in_port=1,actions=CONTROLLER1:65535
> > ovs-ofctl add-flow br0 priority=10,in_port=2,actions=CONTROLLER2:65535
>
> Yes.  Use "id=controller-id" on the controller action.  See ovs-ofctl(8)
> for more information.
>
___
discuss mailing list
disc...@openvswitch.org
https://mail.openvswitch.org/mailman/listinfo/ovs-discuss

Re: [ovs-discuss] How do I push data from Open vSwitch to connected controllers?

[Flavio Leitner]

On Wed, 4 Jan 2017 10:43:58 +1100
Dzuy Pham  wrote:

> I am currently gathering the statistics live and want the switch to push
> them to the controller when a threshold has been met.

Interesting, well perhaps you could change connmgr_run() which
manages all connections to issue the stats reply when it is convenient?

connmgr_run(struct connmgr *mgr,
void (*handle_openflow)(struct ofconn *,
const struct ofpbuf *ofp_msg))
[...]
LIST_FOR_EACH_SAFE (ofconn, next_ofconn, node, >all_conns) {
ofconn_run(ofconn, handle_openflow);
}
[...]

you might need to change connmgr_wait() as well to wake up properly.

That's where I would start looking at :)
Flavio

> 
> On Tue, Jan 3, 2017 at 1:45 PM, Gmail  wrote:
> 
> > I am currently gathering the statistics live and want to push them only
> > when a threshold has been met.
> >
> >
> > On 3/01/2017 2:46 AM, Flavio Leitner wrote:
> >  
> >> May I ask why you don't want the controller to issue a Request?
> >>  
> >
> >  



-- 
Flavio

___
discuss mailing list
disc...@openvswitch.org
https://mail.openvswitch.org/mailman/listinfo/ovs-discuss

Re: [ovs-discuss] Looking for good examples of conntrack / NAT in openvswitch

[Guru Shetty]

On 4 January 2017 at 10:48, Joo Yong-Seok  wrote:

> Thanks... there are good examples But, I am very beginner and if I can
> get some explanation of all these or if there is any good tutorial for
> D-NAT / conntrack, it would be great
>

I am not aware of any. One needs to be comfortable with OVS and ovs-ofctl
to understand most of these. You can also read 'man ovs-ofctl' to read
about more details around 'ct' action.


>
> Best regards
>
> - yongseok
>
> On Wed, Jan 4, 2017 at 8:42 AM, Guru Shetty  wrote:
>
>>
>>
>> On 4 January 2017 at 08:37, Joo Yong-Seok  wrote:
>>
>>> Happy New Year!
>>>
>>> I am urgently looking for the conntrack / NAT flow examples - anything
>>> would be good and I googled it but other than manual page - I didn't see
>>> many things - I specially want to find some D-NAT implementation with
>>> conntrack and NAT flows.
>>>
>>
>> Have a look at the examples here: tests/system-traffic.at
>>
>>
>>
>>>
>>> Could you share your examples? or let me know any useful web site for
>>> this?
>>>
>>> I am not using any controllers and want to configure it by using
>>> ovs-ofctl command.
>>>
>>> Best regards,
>>>
>>> - yongseok
>>>
>>> ___
>>> discuss mailing list
>>> disc...@openvswitch.org
>>> https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
>>>
>>>
>>
>
___
discuss mailing list
disc...@openvswitch.org
https://mail.openvswitch.org/mailman/listinfo/ovs-discuss

Re: [ovs-discuss] Looking for good examples of conntrack / NAT in openvswitch

[Joo Yong-Seok]

Thanks... there are good examples But, I am very beginner and if I can
get some explanation of all these or if there is any good tutorial for
D-NAT / conntrack, it would be great

Best regards

- yongseok

On Wed, Jan 4, 2017 at 8:42 AM, Guru Shetty  wrote:

>
>
> On 4 January 2017 at 08:37, Joo Yong-Seok  wrote:
>
>> Happy New Year!
>>
>> I am urgently looking for the conntrack / NAT flow examples - anything
>> would be good and I googled it but other than manual page - I didn't see
>> many things - I specially want to find some D-NAT implementation with
>> conntrack and NAT flows.
>>
>
> Have a look at the examples here: tests/system-traffic.at
>
>
>
>>
>> Could you share your examples? or let me know any useful web site for
>> this?
>>
>> I am not using any controllers and want to configure it by using
>> ovs-ofctl command.
>>
>> Best regards,
>>
>> - yongseok
>>
>> ___
>> discuss mailing list
>> disc...@openvswitch.org
>> https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
>>
>>
>
___
discuss mailing list
disc...@openvswitch.org
https://mail.openvswitch.org/mailman/listinfo/ovs-discuss

Re: [ovs-discuss] ovs-vsctl using ovsdb-client

[Ben Pfaff]

On Sat, Dec 31, 2016 at 06:41:17PM +0530, Shravan S K wrote:
> How the functionality provided by ovs-vsctl can be achieved using
> ovsdb-client commands ?
> 
> For example, to create a bridge and add a port using ovs-vsctl, we can use
> $ ovs-vsctl add bridge br0
> $ ovs-vsctl add-port br0 port0
> How to do these using ovsdb-client ?
> 
> I went through the doc
> http://openvswitch.org/support/dist-docs-2.5/ovsdb-client.1.pdf Should we
> use the transact command ? (I know basic database stuff) If so, can you
> please give an example of how to do it or suggest some useful
> resources/tutorials available online ?

You might want to run ovs-vsctl with -vjsonrpc to look at how ovs-vsctl
implements its commands.
___
discuss mailing list
disc...@openvswitch.org
https://mail.openvswitch.org/mailman/listinfo/ovs-discuss

[ovs-discuss] Register one OVS bridge to 2 unrelated controllers...

[Sterdnot Shaken]

Can you register one OVS bridge to 2 separate controllers and then, using
flow's, send some traffic to one controller and send some traffic to the
other one?

something like:

ovs-ofctl add-flow br0 priority=10,in_port=1,actions=CONTROLLER1:65535
ovs-ofctl add-flow br0 priority=10,in_port=2,actions=CONTROLLER2:65535

?

Thanks in advance!
___
discuss mailing list
disc...@openvswitch.org
https://mail.openvswitch.org/mailman/listinfo/ovs-discuss

Re: [ovs-discuss] does openvswitch leverage the linux qdisc?

[Ben Pfaff]

On Wed, Jan 04, 2017 at 09:24:57PM +0800, Shiyao Ma wrote:
> I am noob to openvswitch,  but I guess as a `switch', it somehow has some 
> qdisc on its queue (that is connected to the out port).
> 
> Linux provides different qdisc for traffic shaping, like htb, red.
> 
> My question is, does openvswitch take use of the linux qdisc? I mean the code 
> reside under https://github.com/torvalds/linux/tree/master/net/sched

OVS sends and receives packets through network devices, which have their
own qdiscs, and therefore it uses those qdiscs.

> Also, in the openvswitch code base, what's the related c file for 
> implementing qdisc?

There is none, because OVS doesn't implement its own qdiscs.
___
discuss mailing list
disc...@openvswitch.org
https://mail.openvswitch.org/mailman/listinfo/ovs-discuss

[ovs-discuss] does openvswitch leverage the linux qdisc?

[Shiyao Ma]

Hi,

I am noob to openvswitch,  but I guess as a `switch', it somehow has some qdisc 
on its queue (that is connected to the out port).

Linux provides different qdisc for traffic shaping, like htb, red.

My question is, does openvswitch take use of the linux qdisc? I mean the code 
reside under https://github.com/torvalds/linux/tree/master/net/sched

Also, in the openvswitch code base, what's the related c file for implementing 
qdisc?

Thanks.


Regards.
___
discuss mailing list
disc...@openvswitch.org
https://mail.openvswitch.org/mailman/listinfo/ovs-discuss