Hi, Mehran
Unfortunately, you cannot use the port number which is connected to the
controller in OFPActionOutput().
However, if you can set roles(Master/Slave) to the controllers,
you can use OFPSetAsync to control whether the switch sends Packet-In to
Master or Slave controller:
http://ryu.readthedocs.io/en/latest/ofproto_v1_3_ref.html#ryu.ofproto.ofproto_v1_3_parser.OFPSetAsync
Or, this is not a beautiful method, you can connect controllers and the
switch by another connection, like:
c1 ──of───sw ──of───c2
│ ││ │
└──────┘└──────┘("of" means an OpenFlow channel)
Then, you can specify the port number which is connected to the controller.
But the controller should receive packets in your application,
and the packets are "raw" packets, so the informations in the Packet-in
header will be lost.
Thanks,
Fujimoto
On 2017年07月10日 07:52, mehran shetabi wrote:
Hi,
In Mininet, I created a topology with one switch, two host, and two
inband RYU controller.
In OFPActionOutput() function, instead of using
ofproto.OFPP_CONTROLLER for output port may I use port number (e.g. 3)
that connected to the controller?
If the answer is no, is there any way to distinguish controllers for
packet in to them?
Thank you,
Mehran shetabi
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