Hi This duty should be done by controller. In case a flow can not be modified or added a switch response with error message. In case message was delivered tcp.ack will be generated according tcp flow. Controller may handle both events.
Faithfully yours Stas > Message: 2 > Date: Fri, 01 Jan 2016 17:46:52 +0000 > From: Andr? Mantas <andremant...@gmail.com> > To: openflow-discuss@lists.stanford.edu, > "openflow-supp...@lists.stanford.edu" > <openflow-supp...@lists.stanford.edu> > Subject: [openflow-discuss] Positive ACK > Message-ID: > < cap-yg6ojhksvwc32ynt_d3yhgh-0o-v2yrxmv5eo5h0ohwy...@mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Hello. > > Are there any plans to include the possibility of having per-message > positive ACK in OpenFlow? (e.g., a flag in a flow mod that tells the switch > to send an ack when it receives/processes the flow mod message). > > I know this can be done with the use of barriers, but I think it would be > better to have some option to achieve this without using a barrier per > message. > > Thanks in advance.
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