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Data Center Networking: A Brave New World Abstract: Data centers are changing the way networking is done. When the revolution is over, the landscape will be as altered as the server landscape was when the Lintel tsunami swept aside the vertically integrated server market of the late 90s. In this talk, we'll explore the ideas that underpin these changes, ideas that include modern network architectures, network overlays and network management.
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Data Center Networking:A Brave New World
Dinesh Dutt, Chief Scientist
March 11, 2014
OFC 2014 2
What Ails Networking
Mismatch between what networking provides and what modern data center needs
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OFC 2014 3
Who Moved My Needs ?
Traditional Enterprise Apps
L2-centric Sensitive to network failures Coarse-grained failure
domain Mostly static
• VLANs• No Server Virtualization
Mostly North-South
Lower Capacity Mostly 1G, with 10G uplinks
100s-few thousand endpoints
Modern Data Center Apps
IP-centric Workaround network failures Fine-grained failure domain Dynamic
• Clouds• Server Virtualization
Mostly East-West
High Capacity Mostly 10G, with 40G uplinks
Thousands to millions of endpoints
March 11, 2014
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What The Pioneers Did
March 11, 2014 OFC 2014
Complex applications on generic infrastructure
Automation allows dynamic deployment at scale
Capacity = capex
Business model = opex
Web Scale Operations
Drive toward web scale efficiencies
Operational benefit without the development cost
Searching for the right suppliers
Fortune 500
OFC 2014 5
The Generic Infrastructure
L3-basedScalableMature, interoperable technologySimple feature set
L2-basedNot scalableImmature or lots of proprietary technology
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Old World New World
OFC 2014 6
Scalability
Failure Domain
One size fits all
Predictable Latency
Oversubscription
More Observations on the Generic Infrastructure
March 11, 2014
OFC 2014 7
We Need To Talk About Automation
The problem with networking isn’t networking, but managing it Current network administration tool chain is
primitive No programmatic access L3 configuration is perceived as hard to configure
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OFC 2014 8
Implications of These Trends
March 11, 2014
Mature TechnologyL3 basedSimple Feature Set
AutomationRapid Deployment
Improve Network Admin Tool ChainProgrammatic Access
Off-the-shelf components, bare-metal hardware
Support complex applications
Loose coupling with Infrastructure
New World
The rise of merchant silicon
Original products from traditional ODMs
Network OS that allows this
Strong offerings from ecosystem, loose coupling
with infrastructure
OFC 2014 9
You Say You Want A Revolution
hardware
operating system
app app
Single Vendor
Blob
app
Multi Vendor Ecosystem
hardware
operating system
appappapphardware
operating system
monitorroute
hardware
Minimal OS
Openflow Agent
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OFC 2014 10
We All Want To Change the World
March 11, 2014
GatekeeperBoxes
EnablerPlatforms
OFC 2014 11
You Say You Got a Real Solution
March 11, 2014
Mature TechnologyL3 basedSimple Feature Set
AutomationRapid Deployment
Support complex applications
New World
The rise of merchant silicon
Original products from traditional ODMs
Network OS that allows this
Strong offerings from ecosystem, loose coupling
with infrastructure
OFC 2014 12
You Tell Me That It's Evolution
Don’t Throw The Baby Out Routing isn’t broken, it’s what runs the Internet Mature technology, lots of deployment experience, lots of tools On configuration side, server admin tool chain is mature,
sophisticated, in use
Change The Bathwater Simplify configuration and deployment
• Make it Cookie Cutter• Cabling fault detection• Leverage server admin toolkit and unify network administration
with servers
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OFC 2014 13
You Ask Me For a Contribution
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OFC 2014 14
We'd All Love To See the Plan
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OFC 2014 15
You Wanna Talk About Implementation
March 11, 2014
Jan 16th Jan 24th Feb 6thJan 25th Jan 28th Feb 3rd Jan 29th
Midokura meeting with Nolan
Trident II switch on workbench made available to Midokura
Core Code Working , Discussed option to open ports , get a VM setup and connected to switch port
First Demo Recording Done
Demo shown to Cumulus staff by Midokura Team
Got activation and service access to all documentation and support portal
Midokura Demo with Cumulus Integration showcased at Open Daylight
Midokura Timeline – Path to Integration Initial Integration Lifecycle executed in 22 days
16
Look at the x86 server market operating systems
• closed – Windows, Solaris• open – Linux, BSD, etc – RedHat, Debian
applications• closed – SAP• open – Hadoop
Applications loosely coupled with infrastructure Application of the end-to-end principle
What I Think of When I hear Software Defined Networking
We All Wanna Change Your Head
March 11, 2014 OFC 2014
OFC 2014 17
If You Go Around Carrying Pictures of Chairman Mao
Data Center Networks are leading the charge to open networks up
Data centers today, Internet tomorrow ?
Common ground on many basics Network topology for the data center Break up the vertically integrated market Network as a platform, not a black box
Choose solutions that provide choice and are open
Back to “rough consensus, working code”
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OFC 2014 18
© 2014 Cumulus Networks. Cumulus Networks, the Cumulus Networks Logo, and Cumulus Linux are trademarks or registered trademarks of Cumulus Networks, Inc. or its affiliates in the U.S. and other countries. Other names may be trademarks of their respective owners. The registered trademark Linux® is used pursuant to a sublicense from LMI, the exclusive licensee of Linus Torvalds, owner of the mark on a world-wide basis.
Thank You!
March 11, 2014
All pictures courtesy of Wikipedia
