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The strength of titans building networks that support vertical growth
Who am I ? • Enterprise Network Architect at ESTA 000 • Cisco certified • Juniper Ambassador and certified • Tech F...
Topics • Issues with traditional networks • Clos fabrics and spine / leaf architectures • Overlay networking • Issu...
“Never has so much been owed by so many to so few.” –Winston Churchill
Current challenges Y U NO WORK RIGHT?!?!
• Old application tiers + FW/LB • ACLs, Routes, Subnets, VLANs • Current campus & DC architecture does not scale Fou...
• Poor time to market • North South focused topology for East West applications • Logical/Physical/Virtual cluster…. ...
• How many hops? • Traditional physical problems • It isn’t all about size Scale
Drivers • Weak business case • Poor market evaluations • Wrong target customers
Business culture • Box huggers • Old vs New • Marke-tecture • Emotional buy in
Can we solve these problems?
What we have to contend with Average of 13 hops
How does my network help me get here?
Clos Fabric • 1953 - Telecommunications heritage • Three tier - Ingress, Middle, Egress • Allows us to build Spine an...
Spine and Leaf • 12,000 ports is a good start • Oversubscription • Easily expanded • Trident II
Multistage Clos • Fixed switches with Trident 2 chipsets - 500ns • Chassis - 5us between line cards • 3 stage CLOS is...
Leveraging a CLOS fabric
There are products solving these problems today
April 2nd August 26th September 16th October 29th November 7th
Thank me later
• End to End application smarts • CLOS/Spine and leaf • Reduce hair pinning • In-hypervisor services Foundations
• Reduced time to market • East West application accommodated • Virtual everything with physical egress Services
• It is like a fine wine • Small containers & Deterministic failure domains • Size comes with strong base building bl...
• Clear business goals • Strong understanding of customers • Identify opportunity and deliver value add Drivers
Business culture • Sweat equity = amazing • Hulk ‘silo’ Smash • Lift the veil - dissolve the marketing • Involvemen...
Takeaways • CLOS - Leaf spines are a sound and stable underlay for tunnel fabrics • Foundation - Services - Scale - Dri...
Questions?
Thank you
The Strength of Titans
The Strength of Titans
The Strength of Titans
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The Strength of Titans

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This presentation looks at the evolution of DC architecture. Initially it discusses the problems our industry has faced and outlines key problem points that persist within the industry.

This is then leads the conversation to traditional network architectures and their salvation through CLOS leaf and spine architecture. This foundation serves as the network titan, holding up the overlay's in the DC.

Afterwards we look at how the problems aforementioned are solved with Overlay networking.

Published in: Technology, Business
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The Strength of Titans

  1. 1. The strength of titans building networks that support vertical growth
  2. 2. Who am I ? • Enterprise Network Architect at ESTA 000 • Cisco certified • Juniper Ambassador and certified • Tech Field Day delegate • blog.ciscoinferno.net @pandom_
  3. 3. Topics • Issues with traditional networks • Clos fabrics and spine / leaf architectures • Overlay networking • Issues solved and takeaways
  4. 4. “Never has so much been owed by so many to so few.” –Winston Churchill
  5. 5. Current challenges Y U NO WORK RIGHT?!?!
  6. 6. • Old application tiers + FW/LB • ACLs, Routes, Subnets, VLANs • Current campus & DC architecture does not scale Foundations
  7. 7. • Poor time to market • North South focused topology for East West applications • Logical/Physical/Virtual cluster…. Services
  8. 8. • How many hops? • Traditional physical problems • It isn’t all about size Scale
  9. 9. Drivers • Weak business case • Poor market evaluations • Wrong target customers
  10. 10. Business culture • Box huggers • Old vs New • Marke-tecture • Emotional buy in
  11. 11. Can we solve these problems?
  12. 12. What we have to contend with Average of 13 hops
  13. 13. How does my network help me get here?
  14. 14. Clos Fabric • 1953 - Telecommunications heritage • Three tier - Ingress, Middle, Egress • Allows us to build Spine and Leaf topologies.
  15. 15. Spine and Leaf • 12,000 ports is a good start • Oversubscription • Easily expanded • Trident II
  16. 16. Multistage Clos • Fixed switches with Trident 2 chipsets - 500ns • Chassis - 5us between line cards • 3 stage CLOS is 1.5us
  17. 17. Leveraging a CLOS fabric
  18. 18. There are products solving these problems today
  19. 19. April 2nd August 26th September 16th October 29th November 7th
  20. 20. Thank me later
  21. 21. • End to End application smarts • CLOS/Spine and leaf • Reduce hair pinning • In-hypervisor services Foundations
  22. 22. • Reduced time to market • East West application accommodated • Virtual everything with physical egress Services
  23. 23. • It is like a fine wine • Small containers & Deterministic failure domains • Size comes with strong base building blocks Scale
  24. 24. • Clear business goals • Strong understanding of customers • Identify opportunity and deliver value add Drivers
  25. 25. Business culture • Sweat equity = amazing • Hulk ‘silo’ Smash • Lift the veil - dissolve the marketing • Involvement and understanding
  26. 26. Takeaways • CLOS - Leaf spines are a sound and stable underlay for tunnel fabrics • Foundation - Services - Scale - Drivers - Culture ALL play their part. • NFV and SDN isn’t scary and technology such as NSX allows you to work more closely with your networking department and NOT around them.
  27. 27. Questions?
  28. 28. Thank you

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