1. Presenter: Yung-Yu Wang
Design a Ryu APP
Presenter: Yung-Yu Wang 1

2. Outline What is SDN What is “Ryu” Introduction to Ryu Ryu’s structure
Ryu APP
You need to know first
python decorator
event and dispatcher
Demo 2

3. SDN : software defined network
What is SDN
SDN : software defined network 3

4. What is “Ryu” 4

5. Introduction to Ryu A component-based SDN framework
Support OpenFlow, Network, OF-config
Fully Support Openflow 1.0,1.2,1.3,1.4,1.5
All of the code is freely available under the Apache 2.0 license
OpenStack support Ryu
Ryu book 5

6. Ryu’s structure 6

7. Ryu APP Ryu applications are single-threaded entities
The queue is FIFO and preserves the order of events
Event based 7

8. You need to know first
ryu.controller.handler.set_ev_cls(ev_cls, dispatchers=None)
usage : 8

9. Decorator without parameter
Python decorator
Decorator without parameter 9

10. Decorator with parameter
Python decorator
Decorator with parameter 10

11. event and dispatchers Event OFPSwitchFeatures EventOFPPacketIn
CONFIG_DISPATCHER
MAIN_DISPATCHER 11

12. 12

13. Ryu APP — part 1 13

14. Ryu APP — part 2-1 14

15. Ryu APP — part 2-2 15

16. Demo 16