an introduction to software defined networking


#AvayaATF

An Introduction to Software Defined NetworkingPaul UnbehagenChief ArchitectAvaya Networking

@punbehagen


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Software defined networking (SDN) is an approach to building computer networks that

separates and abstracts elements of these systems.

— Wikipedia

http://en.wikipedia.org/wiki/Software-defined_networking


©2013 Avaya Inc. All rights reserved

February 26-28, 2013 | Orlando, FL

Technology Evolution

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Software-Defined Networking is a work-in-progress…

SDN

Fabrics

Which has a long way to go to prove successful




Software-Defined Networking

• Few, big early adopters, deploying in specific scenarios• Google, et al, that are exercising the privilege of their position

to experiment• No clear consensus for the Enterprise on what SDN will

ultimately bring, or why• Broad expectation is to deliver ‘network agility’, supporting

Cloud-based resource sharing initiatives• Ideally, an Enterprise-class solution would deliver

• Automation; bringing the promise of integration• Integration; bringing the promise of agility• Agility; bringing the promise of business advantage

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February 26-28, 2013 | Orlando, FL6

What is OpenFlow

• Offload the management of network elements to a Central Controller.• Download forwarding state (FIB) from the controller using special protocol• Must provide all the functions of an existing set of networking protocols

• And do them at sub-second failover

Out of Band Control Plane

Controller

Download FIBOpenflow’s objective

is to separate the control plane from

the dataplane


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"The problem is, we actually got it – OpenFlow – wrong, and I think a lot of the industry hasn't realized how wrong it

was…”

— Martin Casado

Founder of Nicira, & co-inventor of OpenFlowhttp://searchnetworking.techtarget.com/news/2240174517/Why-Nicira-abandoned-OpenFlow-hardware-control

OpenFlow networking will require significant changes to your network operations and management. Without a killer app, why change?

-CurrentAnalysis




What it’s not…

Historical Examples

What is an SDN?

Centralized Management

ATM

SONET

PBT

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OpenFlowSDN

• Many historical examples• Old idea, reintroduced as something “new”.• Powerful, but dangerous

• E.g. sweetest of honey pots, target for hacking



Early Promoters

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Where do you fit into this picture...?


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…when it comes to network virtualization in the data center, OpenFlow for control of hardware forwarding is the wrong way to go

— Martin Casado

Founder of Nicira, & co-inventor of OpenFlowhttp://searchnetworking.techtarget.com/news/2240174517/Why-Nicira-abandoned-OpenFlow-hardware-control




Data Center Automation

• Network has lagged behind the virtualization of compute and storage

• Direct, automated integration with VM administration tools

• Seamlessly integrate a holistic virtualization solution

• Extend with enhanced automation and optimization

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Fully realize the possibilities of virtualization…



February 26-28, 2013 | Orlando, FL12

SDN will continue to evolveCompeting Solutions available and more appearing

OpenFlow

NETCONF (IETF)

i2rs (IETF) OF-Config

[network programmability] ..are important parts of the overall SDN solution, but it’s not aligned with where buyers are today.

Programmability could be used to improve network management, but it really doesn’t have any impact on the first two options: simplification of architecture and

reduction of hardware costs. - Zeus Kerravala

http://www.networkworld.com/community/blog/software-defined-networking-more-just-programmability


Thank you!#AvayaATF

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@punbehagen

an introduction to software defined networking

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