| | SDN seminar: P4 Seminar: Prof. Timothy Roscoe & Dr. Desislava Dimitrova (Desi) 27.05.2016 1 Software Defined Networking P4: Programming Protocol-Independent Packet Processors D. Dimitrova
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| | SDN seminar: P4
Seminar: Prof. Timothy Roscoe & Dr. Desislava Dimitrova (Desi)
27.05.2016 1
Software Defined Networking P4: Programming Protocol-Independent Packet Processors
D. Dimitrova
| | SDN seminar: P4
What does that mean in an OpenFlow world?
Fixed set of protocols (and their headers) Many protocols – rich functionality Many protocols – header space explosion
(slow) Roll-out time Add protocol to the OF spec Switches that support the spec
Can we do better?
27.05.2016 D. Dimitrova 2
Programmable networks
| | SDN seminar: P4
We share common understanding of English grammar, vocabulary and the Latin alphabet.
27.05.2016 D. Dimitrova 3
| | SDN seminar: P4
Липсва обща база за взаимна комуникация.
27.05.2016 D. Dimitrova 4
| | SDN seminar: P4
Липсва обща база за взаимна комуникация.
27.05.2016 D. Dimitrova 5
| | SDN seminar: P4
Липсва обща база за взаимна комуникация.
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| | SDN seminar: P4
Reconfigurability Flexible, dynamic change of the switch behaviour
Protocol independent Any protocol, any packet processing
Target independence Any switch, any hardware platform
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P4 design principles
| | SDN seminar: P4
Define header formats
Define packet processing sequences
Populate tables
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P4 design principles
| | SDN seminar: P4
Define header formats Format specification State machine
Define packet processing sequences
Populate tables
27.05.2016 D. Dimitrova 9
P4 design principles
| | SDN seminar: P4
Define header formats Format specification State machine
Define packet processing sequences
Populate tables
27.05.2016 D. Dimitrova 10
P4 design principles
| | SDN seminar: P4
Define header formats Format specification State machine
Define packet processing sequences
Populate tables
27.05.2016 D. Dimitrova 11
P4 design principles
| | SDN seminar: P4
Define header formats
Define packet processing sequences Table specification & matching criteria Action specification Table chaining
Populate tables
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P4 design principles
| | SDN seminar: P4
27.05.2016 D. Dimitrova 13
P4 in action
| | SDN seminar: P4
Huawei’s POF 2013
Intel’s FlexPipe 2012
TI’s & Stanford’s RMT (reconfigurable match tables) 2013
Cavium’s XPL September 2014
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Other proposals
| | SDN seminar: P4
Generalize the packet processing model.
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| | SDN seminar: P4 27.05.2016 D. Dimitrova 16
OpenFlow 2.0
| | SDN seminar: P4
Sounds familiar…
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OpenFlow 2.0
| | SDN seminar: P4
ETH Zurich Systems Group Universitättrasse 6 8092 Zürich www.ethz.ch/en.html © ETH Zurich, February 2016
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Contact information and credits
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