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