Openflow勉強会 「OpenFlowコントローラを取り巻く状況とその実装」
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Openflow勉強会 「OpenFlowコントローラを取り巻く状況とその実装」
- 1. OpenFlow (@oshothebig)
- 2. • • • • • , GMPLS, VLAN tag swapped Ethernet, , etc.
- 3. OpenFlow • Galibier OpenFlow Controller • https://github.com/oshothebig/galibier • • 300 Java OpenFlow (http://bit.ly/qXoMGM) • OpenFlow Java (http://bit.ly/pbI3Or)
- 4. OpenFlow Application Application Application Controller OpenFlow Switch Switch Switch Switch
- 5. OpenFlow • NEC UNIVERGE PF5240/ PF5820 • Reference • Pronto Systems Implementation 3240/3290 • Open vSwitch • IBM RackSwitch G8264 • HP 3500/5400/8200
- 6. OpenFlow NOX NEC Trema Nicira Networks Beacon/Floodlight Big Switch Networks Ryu Midokura NodeFlow NTT Data etc. etc.
- 7. NOX • http://noxrepo.org/ • GPL v3 • Nicira Networks • C++/Python • • • • 2011/1/1 53
- 8. Trema • https://github.com/trema/trema • GPL v2 • NEC • C/Ruby • • 1 PC •
- 9. Beacon/Floodlight • http://www.beaconcontroller.net/ (Beacon) http:// oodlight.open owhub.org/ (Floodlight) Beacon Floodlight GPL v2 Apache License Version 2.0 Java David Erickson (Stanford) Big Switch Networks • IO 600 Flow req/sec @4 (Beacon)
- 10. Ryu • http://www.osrg.net/ryu/ • GPL v3 • NTT( ?) VA Linux • Pure Python • OpenStack
- 11. NodeFlow • http://github.com/gaberger/NodeFLow • MIT Licenes • Gary Berger • JavaScript (for Node.js)
- 13. Trema NEC UNIVERGE PF Big Switch Floodlight BigController? NOX Nicira NVP?
- 14. Floodlight • 12 https://github.com/ oodlight/ oodlight • Beacon • • OSGi • Netty • →T
- 15. Floodlight • 12 https://github.com/ oodlight/ oodlight • Beacon • • OSGi • Netty • →T
- 16. Nicira Networks • 2 (by Publickey) http://www.publickey1.jp/blog/11/nicira_networks.html • NTT http://www.ntt.co.jp/news2011/1108/110802a.html • Nicira Virtualization Platform (NVP) http://cn.teldevice.co.jp/product/nicira/nicira_nvp/ index.html
- 17. Onix • OSDI’10 Onix: A Distributed Control Platform for Large-scale Production Networks http://www.usenix.org/event/osdi10/tech/full_papers/ Koponen.pdf • Nicira Networks, Google, NEC, UC Berkeley • • Zookeeper • 15 C++
- 18. Onix Server 1 Server N Network Control Logic Network Control Logic NIB NIB Onix Switch Import / Export Distribution I / E Distribution I / E Switch Import / Export Management Connectivity Network Infrastructure Managed Physical Network Infrastructure Figure 1: There are four components in an Onix controlled network: managed physical infrastructure, connectivity
- 19. Onix • Network Information Base (NIB) • Forwarding 1 n Forwarding Category Host Link Table Engine Query Create, dest 1 2 Network Node 1 n Port Access attri Notification Figure 2: The default network entity classes provided by Synchronize • Onix’s API. Solid lines represent inheritance,DB dashed lines while Configuratio correspond to referential relation between entity instances. The • Transactionalthe dashed linesdatabase numbers on persistent show the quantitative mapping relationship (e.g., one Link maps to two Ports, and two Pull • One-hop, can map to the same Link). Nodes, ports and links DHT Ports eventually-consistent, memory-only constitute the network topology. All entity classes inherit the same base class providing generic key-value pair access. Table 1: Fu
- 20. OpenFlow
- 21. • • • •
- 22. • Symmetric Message • Hello, Echo, , • Controller/Switch Message • , , • Async Message • Packet in, ,
- 23. Header ver. type length xid payload 22 • length (2 bytes) • Netty LengthFieldBasedFrameDecoder • Floodlight
- 24. Floodlight ChannelPipeline Controller OFChannelHandler OpenFlow OFMessageEncoder OFMessageDecoder Netty Internal I/O Threads
- 25. Switch Controller
- 26. Switch Controller
- 27. Switch Controller HELLO HELLO
- 28. Switch Controller HELLO HELLO FEATURE_REQUEST FEATURE_REPLY
- 29. Switch Controller
- 30. Switch Controller ECHO_REQUEST ECHO_REPLY
- 31. Switch Controller ECHO_REQUEST ECHO_REPLY ECHO_REQUEST ECHO_REPLY
- 32. Controller.java ( OFChannelHandler) protected void processOFMessage(OFMessage m) throws IOException, SwitchStateException { switch (m.getType()) { case HELLO: .... case ECHO_REQUEST: .... case FEATURES_REPLY: .... default: .... } ※ Trema src/switch_manager/ofpmsg_recv.c: ofpmsg_recv()
- 33. Switch Controller
- 34. Switch Controller
- 35. Switch Controller PACKET_IN
- 36. Switch Controller PACKET_IN PACKET_OUT or FLOW_MOD
- 37. Controller.java protected void handleMessage( IOFSwitch sw, OFMessage m, FloodlightContext bContext) { switch (m.getType()) { case PACKET_IN: .... default: .... } default
- 38. OpenFlow • OpenFlow 1.1 • 1.0 • Ver. 1.1 • Ver. 1.1 • • Ver. 1.2 •
- 39. • OpenFlow • • OpenFlow • Floodlight
- 40. • Open vSwitch