1.
The strength of titans
building networks that support vertical
growth

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.
Topics
•
Issues with traditional
networks
•
Clos fabrics and spine /
leaf architectures
•
Overlay networking
•
Issues solved and
takeaways

4.
“Never has so much been owed by so many to
so few.”
–Winston Churchill

5.
Current challenges
Y U NO
WORK
RIGHT?!?!

6.
•
Old application tiers
+ FW/LB
•
ACLs, Routes,
Subnets, VLANs
•
Current campus &
DC
architecture does
not
scale
Foundations

7.
•
Poor time to market
•
North South focused topology for
East West applications
•
Logical/Physical/Virtual cluster….
Services

8.
•
How many hops?
•
Traditional physical problems
•
It isn’t all about size
Scale

9.
Drivers
•
Weak business
case
•
Poor market
evaluations
•
Wrong target
customers

10.
Business culture
•
Box huggers
•
Old vs New
•
Marke-tecture
•
Emotional buy in

11.
Can we solve these
problems?

12.
What we
have to
contend
with
Average of 13 hops

13.
How does my network
help me get here?

14.
Clos Fabric
•
1953 - Telecommunications heritage
•
Three tier - Ingress, Middle, Egress
•
Allows us to build Spine and Leaf topologies.

15.
Spine and Leaf
•
12,000 ports is a good start
•
Oversubscription
•
Easily expanded
•
Trident II

16.
Multistage Clos
•
Fixed switches with Trident 2 chipsets - 500ns
•
Chassis - 5us between line cards
•
3 stage CLOS is 1.5us

17.
Leveraging a CLOS
fabric

18.
There are products
solving these problems
today

19.
April 2nd
August 26th
September 16th
October 29th
November 7th

20.
Thank me
later

21.
•
End to End application smarts
•
CLOS/Spine and leaf
•
Reduce hair pinning
•
In-hypervisor services
Foundations

22.
•
Reduced time to market
•
East West application
accommodated
•
Virtual everything with
physical egress
Services

23.
•
It is like a fine wine
•
Small containers &
Deterministic failure domains
•
Size comes with strong base
building blocks
Scale

24.
•
Clear business goals
•
Strong understanding of
customers
•
Identify opportunity and
deliver value add
Drivers

25.
Business culture
•
Sweat equity = amazing
•
Hulk ‘silo’ Smash
•
Lift the veil - dissolve
the marketing
•
Involvement and
understanding

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.
Questions?

28.
Thank you