DPI Traffic Management for Switched
               Ethernet ATCA Platforms

                          By Chuck Hill
      ...
Agenda

           Effects of Best Effort Switching on Traffic

           Techniques for Traffic Management

           F...
Effects of Statistical Congestion
                              100                                                       ...
Statistical Congestion

           Less than full utilization of bandwidth

           Significant impact on latency even ...
Congestion Management

           Priority Scheduling

           Bandwidth Reservation

           Hierarchical Schedulin...
Congestion Avoidance

           Paused Based Flow Control

           Class Based Flow Control

           Ingress Traffi...
Facilities in Advanced
                                       Ethernet Switches
           Ingress Traffic Classification
...
Facilities in Advanced
                                       Ethernet Switches
           Global Pause Frame Generation

...
Facilities in Advanced
                                       Ethernet Switches
           8 Traffic Classes Per Port

   ...
About the Author

      Chuck Hill is a 30 year professional with more than 15
      years experience designing high avail...
About Continuous Computing
      Continuous Computing is the only company deploying
      uniquely architected systems com...
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DPI Traffic Management for Switched Ethernet ATCA Platforms

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Presentaton by Chuck Hill at ATCA Summit 2009

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Transcript of "DPI Traffic Management for Switched Ethernet ATCA Platforms"

  1. 1. DPI Traffic Management for Switched Ethernet ATCA Platforms By Chuck Hill Chief Architect Continuous Computing Santa Clara, CA USA October 2009 1
  2. 2. Agenda Effects of Best Effort Switching on Traffic Techniques for Traffic Management Facilities for Traffic Management in Ethernet Switches Santa Clara, CA USA October 2009 2
  3. 3. Effects of Statistical Congestion 100 50 90 45 80 40 70 35 Bandwidth Offered Relative Latency 60 30 50 25 40 20 30 15 20 10 10 5 0 0 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Bandwidth Accepted Santa Clara, CA USA October 2009 3
  4. 4. Statistical Congestion Less than full utilization of bandwidth Significant impact on latency even before bandwidth utilization is impacted. More important is variability in latency Santa Clara, CA USA October 2009 4
  5. 5. Congestion Management Priority Scheduling Bandwidth Reservation Hierarchical Scheduling Traffic Classes Santa Clara, CA USA October 2009 5
  6. 6. Congestion Avoidance Paused Based Flow Control Class Based Flow Control Ingress Traffic Shaping Santa Clara, CA USA October 2009 6
  7. 7. Facilities in Advanced Ethernet Switches Ingress Traffic Classification • VPN Priority • Diffserve Codepoint • ACL • Other up to 128 bytes in the header Ingress Traffic Shaping • Rate limit enforcement • Tri-color marking Santa Clara, CA USA October 2009 7
  8. 8. Facilities in Advanced Ethernet Switches Global Pause Frame Generation Class of Service Pause Frames Per Port Per Class Pause Frames Virtual Output Queues Santa Clara, CA USA October 2009 8
  9. 9. Facilities in Advanced Ethernet Switches 8 Traffic Classes Per Port Priority and DRR scheduling per class per port High and low watermarks per class per port • Tri color marking for packet discard Santa Clara, CA USA October 2009 9
  10. 10. About the Author Chuck Hill is a 30 year professional with more than 15 years experience designing high availability and fault tolerant equipment for telecom. Chuck Hill holds 10 patents for work in telecom and has participated in the development of many standards for PICMG, RapidIO, and IEEE. He has a Master’s Degree in Engineering from Arizona State University, and a Master’s Degree in Business from DeVry University. Santa Clara, CA USA October 2009 10
  11. 11. About Continuous Computing Continuous Computing is the only company deploying uniquely architected systems comprised of telecom platforms and Trillium software. Leveraging more than 20 years of innovation, the company enables network equipment providers to rapidly deploy carrier-class LTE, DPI, and Femtocell applications with reduced risk, cost, and complexity. Only Continuous Computing combines open-standards systems, Trillium protocol software, and expert professional services to create fully integrated solutions that empower more than 150 customers worldwide to accelerate new product delivery and maximize return on investment. www.ccpu.com. Santa Clara, CA USA October 2009 11

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