On Tue, 01 May 2018 19:59:15 +0900,
Soliman Awad Alshra´a Abdullah TU Ilmenau wrote:
>
> [1 <multipart/alternative (7bit)>]
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> Dears,
>
> Can I force (Packet-In) to send instructions to a specific switch without any
> request from the switches ?. For instance, I intend to create a component
> which sends a dictionary contains {Source, Destination, In_port, data
> path_id}. Then I need the controller sends a related instruction to the dpid
> that inform it how to reach any packet from source to Destination.
I'm not 100% sure what you want to do, but a packet-in is generated
when a packet matches a flow that has a controller action.
A packet-in is always sent to a controller. You can implement a
packet-in handler that does the job you described above, and the
handler can send back a flowmod message to the switch to program
flows.
--
IWAMOTO Toshihiro
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