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OpenFlow & Middleboxes
Levent Dane
University of Houston
Middlebox on the Path
Leverage hardware capabilities on the path of
OpenFlow flows
(Application data transport, not just packet headers)
GEC15: Selective packet Encryption
GEC16: Creating feedback from ICMP packets
GEC17: Statically inserted a middlebox into GENI
GEC18: Dynamic deployment of a middlebox
GEC Posters
Available at GENI wiki
OpenFlow Uses in Middle Boxes
Selective flow routing
Easily path redirecting
Traffic Steering
Feature Matrix
MAC IP Phy Port Port # VLAN/MPLS
Encryption DPI SSL/IPSec TCP
OutputChange Header
MatchHWAccelAction
Use Case Examples
 Creating feedback from network
events.
 TCP Error Fixing and Accelerators
 Manipulating Payload
Common Switch Architecture for
OpenFlow
Programmability of TCAM and ASIC
Need for NPU
TCAM ASIC
Control Subsystem
TCAM ASIC
Control Subsystem NPU
Future with OpenFlow
Basic scripting language
(combine actions together for future use)
Applications Hosting Capability
(enabling the NPU capabilities like HW accelerators)
Pattern Match
(searching a data in the network packet)
Thank you. Questions?
Levent Dane
Research Assistant
University of Houston
ldane@uh.edu

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Inefficiencies in using Middleboxes with OpenFlow

  • 1. OpenFlow & Middleboxes Levent Dane University of Houston
  • 2. Middlebox on the Path Leverage hardware capabilities on the path of OpenFlow flows (Application data transport, not just packet headers) GEC15: Selective packet Encryption GEC16: Creating feedback from ICMP packets GEC17: Statically inserted a middlebox into GENI GEC18: Dynamic deployment of a middlebox
  • 4. OpenFlow Uses in Middle Boxes Selective flow routing Easily path redirecting Traffic Steering
  • 5. Feature Matrix MAC IP Phy Port Port # VLAN/MPLS Encryption DPI SSL/IPSec TCP OutputChange Header MatchHWAccelAction
  • 6. Use Case Examples  Creating feedback from network events.  TCP Error Fixing and Accelerators  Manipulating Payload
  • 7. Common Switch Architecture for OpenFlow Programmability of TCAM and ASIC Need for NPU TCAM ASIC Control Subsystem TCAM ASIC Control Subsystem NPU
  • 8. Future with OpenFlow Basic scripting language (combine actions together for future use) Applications Hosting Capability (enabling the NPU capabilities like HW accelerators) Pattern Match (searching a data in the network packet)
  • 9. Thank you. Questions? Levent Dane Research Assistant University of Houston ldane@uh.edu

Editor's Notes

  1. A. 2-3 minutes on what you are working on and why. What is the problemyou are trying to solve, and what is the general approach, and what haveyou accomplished so far? I know that you can't get into any real detailin 2-3 minutes, but this isn't an exposition of your project -- it's adialog with the ONF with an emphasis on how OpenFlow plays or should beplaying in the solution to your problem. I'm guessing that your topic ofinefficiencies of middleboxes with OpenFlow should require comparativelylittle introduction in addition to the "B' and "C" topics below.
  2. B. 3-5 minutes on how OpenFlow / SDN is being used, or should be used inmiddleboxes including what isn't working. The ONF would like to seeleading-edge use cases explained in some detail with comments and possiblyimplementation suggestions.
  3. C. Up to 5 minutes for commenting on how OpenFlow could better supportmiddleboxes or elimiante the need for them. How might it be changed? Whatnew capabilities should it have?