DPI Traffic Management for Switched Ethernet ATCA Platforms

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The document discusses traffic management techniques for switched Ethernet platforms. It covers the effects of best effort switching on traffic like increased latency even before full bandwidth utilization. It then outlines several techniques for traffic management including priority scheduling, bandwidth reservation, and traffic shaping. Finally, it details some facilities for traffic management in advanced Ethernet switches such as classification, shaping, scheduling, and pause frame generation.

Technology

DPI Traffic Management for Switched
Ethernet ATCA Platforms

By Chuck Hill
Chief Architect
Continuous Computing

Santa Clara, CA USA
October 2009 1

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

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

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

Congestion Management

Priority Scheduling

Bandwidth Reservation

Hierarchical Scheduling

Traffic Classes

Santa Clara, CA USA
October 2009 5

Congestion Avoidance

Paused Based Flow Control

Class Based Flow Control

Ingress Traffic Shaping

Santa Clara, CA USA
October 2009 6

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

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

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

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

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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Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/ DLAU und die Lizenzen nach dem CCB- und CCX-Modell sind für viele in der HCL-Community seit letztem Jahr ein heißes Thema. Als Notes- oder Domino-Kunde haben Sie vielleicht mit unerwartet hohen Benutzerzahlen und Lizenzgebühren zu kämpfen. Sie fragen sich vielleicht, wie diese neue Art der Lizenzierung funktioniert und welchen Nutzen sie Ihnen bringt. Vor allem wollen Sie sicherlich Ihr Budget einhalten und Kosten sparen, wo immer möglich. Das verstehen wir und wir möchten Ihnen dabei helfen! Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell. Nehmen Sie an diesem Webinar teil, bei dem HCL-Ambassador Marc Thomas und Gastredner Franz Walder Ihnen diese neue Welt näherbringen. Es vermittelt Ihnen die Tools und das Know-how, um den Überblick zu bewahren. Sie werden in der Lage sein, Ihre Kosten durch eine optimierte Domino-Konfiguration zu reduzieren und auch in Zukunft gering zu halten. Diese Themen werden behandelt - Reduzierung der Lizenzkosten durch Auffinden und Beheben von Fehlkonfigurationen und überflüssigen Konten - Wie funktionieren CCB- und CCX-Lizenzen wirklich? - Verstehen des DLAU-Tools und wie man es am besten nutzt - Tipps für häufige Problembereiche, wie z. B. Team-Postfächer, Funktions-/Testbenutzer usw. - Praxisbeispiele und Best Practices zum sofortigen Umsetzen

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DPI Traffic Management for Switched Ethernet ATCA Platforms

1. DPI Traffic Management for Switched Ethernet ATCA Platforms By Chuck Hill Chief Architect Continuous Computing Santa Clara, CA USA October 2009 1

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. 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. 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. Congestion Management Priority Scheduling Bandwidth Reservation Hierarchical Scheduling Traffic Classes Santa Clara, CA USA October 2009 5

6. Congestion Avoidance Paused Based Flow Control Class Based Flow Control Ingress Traffic Shaping Santa Clara, CA USA October 2009 6

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. 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. 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. 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. 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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