PowerPoint Presentation

SDN Technology Overview

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The network paradigm as we know it…

Control and Data Plane resides within Physical Device

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Control Plane and Data Plane

Two fundamental terms to begin understanding the concepts around SDN

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Over the years…

this network paradigm has

remained mostly intact…

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SDN gained massive industry mindshare

Software defined networking (SDN) is an approachto building computer networks that separates andabstracts elements of these systems

What is SDN?

(per Wikipedia definition)

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In other words…

In the SDN paradigm, not allprocessing happens inside the samedevice

Where did this SDN “thing” come from?

Stanford University – Clean Slate Project

“…explore what kind of Internet we would design if we were to start with a cleanslate and 20-30 years of hindsight.”

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http://cleanslate.stanford.edu/

You might have noticed the Cisco Logo on the web page

Cisco provided some equipment early in the cycle to the research team

Namely a Catalyst 6500 and 3750 upon which some of the early work was done…

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… Clean Slate led to the development of…

OpenFlow is a Layer 2 communications protocol thatgives access to the forwarding plane of a networkswitch or router over the network

What is Openflow?

(per Wikipedia definition)

Four parts

to Openflow

Central Administration

and Operations

point for

Network Elements

Openflow Controller

Openflow Controller | Northbound API

Northbound API

Integral part of Controller

“Network enabled” application canmake use of Northbound API torequest services from the network…

Openflow Device Agent

Agent runs on the networkdevice

Agent receives instructionsfrom Controller

Agent programs devicetables

Openflow Protocol

Openflow Protocol is…

“A mechanism for the OpenflowController to communicate withOpenflow Agents…”

First lesson for today…

Openflow does not equal SDN

Openflow

Software

Defined

Networking

Openflow is one flavor of SDN

By the way,.. did you know?

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Google have been using Openflow to drive theirWide Area Network since January 2011

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Urs Holzle, Senior Vice President of Technology Infrastructure at Google

speaking in a keynote at the

second annual Open Networking Summit (April 2012)

http://www.eetimes.com/electronics-news/4371179/Google-describes-its-OpenFlow-network

That was a pretty big statement…

…and somewhat validated Openflow as aviable technology in the SDN space

Who controls Openflow?

Non Profit Consortium

Dedicated to “the transformation of networks through SDN”

Mission to “commercialize and promote SDN…as a disruptive approach tonetworking…”

OPEN NETWORK FOUNDATION

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Which companies make up the ONF?

ONF Board Members

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Deutsche Telekom : Facebook : Goldman Sachs : Yahoo

Google : Microsoft : NTT Communications : Verizon

ONF Members

6WINDA10 NetworksADVA Optical NetworkingAlcatel-LucentAricent GroupBig Switch NetworksBroadcomBrocadeCentec NetworksChina Mobile

CienaCiscoCitrixCohesiveFTColtCompTIACyanDell/Force10ElbrysEricsson

ETRI

Extreme NetworksEZchipF5France Telecom OrangeFreescaleFujitsuGigamonHitachiHPHuaweiIBMInfineraInfobloxIntel

IP InfusionIxiaJuniper NetworksKDDI

Korea Telecom

Level 3 CommunicationsLineRate SystemsLSILuxoftMarvellMellanoxMetaswitch Networks

Midokura

NCL CommunicationsNECNetgearNetronomeNetScout SystemsNokia Siemens Networks

NoviFlowOracleOverture NetworksPICA8Plexxi Inc.

Qosmos

RadwareRiverbed TechnologySamsungSK TelecomSpirentSunbaySwisscomTail-f SystemsTelecom ItaliaTelefónicaTencentTexas InstrumentsThalesTransmodeTurk Telekom / ArgelaVello SystemsVerisignVMware/NiciraXpliantZTE Corporation

The moral of this story is

The “Network Paradigm”…

…is being challenged

What is…

Overlay Networks

You start with a PhysicalSwitch Network

Physical Devices andPhysical Connections

Then you add anoverlay

Overlay provides basefor logical network

Logical “switch” devicesoverlay the physicalnetwork

Underlying physicalnetwork carries data trafficfor overlay network

They define their owntopology

Multiple “overlay”networks can co-exist atthe same time

Overlays provides logicalnetwork constructs for differenttenants (customers)

Main Benefit of Overlays?

Overlay Network can be created and torn down withoutchanging underlying physical network

What about Openstack?

Where does that fit in?

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Openstack is an IAAS (Infrastructure As A Service)cloud computing project

It is also referred to as a Cloud Operating System

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“…provides a means to control (administer) compute, storage,network and virtualization technologies…”

To understand IAAS, let us

first, let us define Cloud Computing…

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Network

Storage

Compute

Users

Cloud Computing provides a set of resources and servicesthrough the internet

What are these resources?

At a more detailed level, there are many resources insidethe cloud

Applications

Runtimes

Databases

Servers

Security

Virtualization

Storage

Networking

PrivateCloud

PrivateCloud

What resources you manage inside the cloud defines the following…

Infrastructureas a Service(IAAS)

Infrastructureas a Service(IAAS)

Platform as aService (PAAS)

Platform as aService (PAAS)

Software as aService (SAAS)

Software as aService (SAAS)

How do these differ from one another?

Applications

Runtimes

Databases

Servers

Security

Virtualization

Storage

Networking

PrivateCloud

Infrastructureas a Service

(IAAS)

Infrastructureas a Service

(IAAS)

Platform as aService

(PAAS)

Platform as aService

(PAAS)

Software as aService

(SAAS)

Software as aService

(SAAS)

Applications

Runtimes

Databases

Servers

Security

Virtualization

Storage

Networking

Applications

Runtimes

Databases

Servers

Security

Virtualization

Storage

Networking

Applications

Runtimes

Databases

Servers

Security

Virtualization

Storage

Networking

Managed by You

Managed by Vendor

Applications

With IAAS, compute, storage, networking andvirtualization resources are managed by the Vendor (thisdefines them as an IAAS provider)

Runtimes

Databases

Servers

Security

Virtualization

Storage

Networking

Managed by You

Managed by Vendor

Openstack lets the provider manage these resources

Servers

Virtualization

Storage

Networking

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What is OpenDaylight?

•OpenDaylight is an open source project formed by industry leaders and others under theLinux Foundation with the mutual goal of furthering the adoption and innovation ofSoftware Defined Networking (SDN) through the creation of a common vendor supportedframework.