Hi, Mehran
how can i use OpenFlow channel in Mininet?
Sorry, OpenFlow channel is a connection which is used for OpenFlow
protocol and you already have.
What I meant was that you should have another connection between
controllers and the switch other than OpenFlow channel,
to exchange "raw" packets, not OpenFlow packets.
in the second solution, how can i retrieve Packet-in header?
As I said, in the second solution, the packets will be sent without
Packet-in header.
So, in this solution, there is no way to retrieve Packet-in header.
If you want to get Packet-in header, I think this solution is not suitable,
then you should apply the first solution (setting roles and Async).
Do you need to get Packet-in header?
If not, I try implementing and tell you how to implement the second
solution.
Thanks,
Fujimoto
On 2017年07月11日 06:04, mehran shetabi wrote:
hi, Fujimoto
in the second solution, how can i retrieve Packet-in header?
is there any solution for it?
thank you,
Mehran shetabi
------------------------------------------------------------------------
*From:* Fujimoto Satoshi <satoshi.fujimo...@gmail.com>
*Sent:* Monday, July 10, 2017 5:35 AM
*To:* mehran shetabi; ryu-devel@lists.sourceforge.net;
satoshi.fujimo...@gmail.com
*Subject:* Re: [Ryu-devel] how can i distinguish controllers for
packet in to them?
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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