Re: [ovs-discuss] OVS as a destination

[Justin Pettit]

> On May 2, 2018, at 8:40 AM, Sh j  wrote:
> 
> For example, if an OVS receives a ICMP_reply and it is the destination of 
> this ICMP_reply, it does not need to send a packet_in to the controller. 
> So I want to install some flow rules or configure OVS to not send packet_in 
> messages in this case.
> 
> I am using ONOS as a controller. The problem is that when the OVS connects to 
> the controller, all flow rules added manually are disappeared. 
> 
> Is there any way to force OVS to keep some kind of flow rules and connecting 
> to the controller does not affect that?

It sounds like your controller is deleting the flows, not OVS itself.  I think 
you'll need to make your controller not do that for the manually added flows.

--Justin


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Re: [ovs-discuss] OVS as a destination

[Blue Lang]

You don't want to do that. The controller should always initiate the flow
rules on switch connection to ensure stale or unwanted rules aren't present.

If you want to "force" a set of base rules, have ONOS push them to every
switch on connection.

On Wed, May 2, 2018 at 11:40 AM, Sh j  wrote:

> For example, if an OVS receives a ICMP_reply and it is the destination of
> this ICMP_reply, it does not need to send a packet_in to the controller.
> So I want to install some flow rules or configure OVS to not send
> packet_in messages in this case.
>
> I am using ONOS as a controller. The problem is that when the OVS connects
> to the controller, all flow rules added manually are disappeared.
>
> Is there any way to force OVS to keep some kind of flow rules and
> connecting to the controller does not affect that?
>
> Thanks
>
> On Tue, May 1, 2018 at 9:46 PM, Ben Pfaff  wrote:
>
>> On Tue, May 01, 2018 at 01:25:40PM -0700, Justin Pettit wrote:
>> >
>> > > On May 1, 2018, at 11:21 AM, Sh j  wrote:
>> > >
>> > > If the destination of a packet be an OVS, is there any way to set the
>> OVS to get the packet without sending any packet_in messages to the
>> controller for handling this packet?
>> >
>> > I'm not sure that I understand the question.  Are you asking is there a
>> way for OVS to send some packets to the controller without sending an
>> OpenFlow packet-in?  I suppose you could mirror the packet to a system
>> through a dedicated port, VLAN, or tunnel.  However, if you want to be
>> using OpenFlow, packet-in is the natural way for sending packets to a
>> controller.
>>
>> Another way to interpret the question is, "Can I set up a flow without
>> receiving a packet-in?"  If that's the question, then the answer is
>> "yes: the flow table can be modified independent of traffic."
>>
>
>
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Re: [ovs-discuss] OVS as a destination

[Sh j]

For example, if an OVS receives a ICMP_reply and it is the destination of
this ICMP_reply, it does not need to send a packet_in to the controller.
So I want to install some flow rules or configure OVS to not send packet_in
messages in this case.

I am using ONOS as a controller. The problem is that when the OVS connects
to the controller, all flow rules added manually are disappeared.

Is there any way to force OVS to keep some kind of flow rules and
connecting to the controller does not affect that?

Thanks

On Tue, May 1, 2018 at 9:46 PM, Ben Pfaff  wrote:

> On Tue, May 01, 2018 at 01:25:40PM -0700, Justin Pettit wrote:
> >
> > > On May 1, 2018, at 11:21 AM, Sh j  wrote:
> > >
> > > If the destination of a packet be an OVS, is there any way to set the
> OVS to get the packet without sending any packet_in messages to the
> controller for handling this packet?
> >
> > I'm not sure that I understand the question.  Are you asking is there a
> way for OVS to send some packets to the controller without sending an
> OpenFlow packet-in?  I suppose you could mirror the packet to a system
> through a dedicated port, VLAN, or tunnel.  However, if you want to be
> using OpenFlow, packet-in is the natural way for sending packets to a
> controller.
>
> Another way to interpret the question is, "Can I set up a flow without
> receiving a packet-in?"  If that's the question, then the answer is
> "yes: the flow table can be modified independent of traffic."
>
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[ovs-discuss] OVS as a destination

[Sh j]

Hello,


If the destination of a packet be an OVS, is there any way to set the OVS
to get the packet without sending any packet_in messages to the controller
for handling this packet?


Thank you
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