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

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

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

What is “Ryu” 4

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

Ryu’s structure 6

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

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

Decorator without parameter Python decorator Decorator without parameter 9

Decorator with parameter Python decorator Decorator with parameter 10

event and dispatchers Event OFPSwitchFeatures EventOFPPacketIn CONFIG_DISPATCHER MAIN_DISPATCHER 11

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Ryu APP — part 1 13

Ryu APP — part 2-1 14

Ryu APP — part 2-2 15

Demo 16