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Sunday, 26 May, 2013

Understanding network virtualizationA “no nonsense” look at network virtualization, what it is, what it isn’t, and the benefits it offers

Scott Lowe, VCDX 39vExpert, Author, Blogger, Geek

http://blog.scottlowe.org / Twitter: @scott_lowe

Sunday, 26 May, 2013

Your name is familiar...

Sunday, 26 May, 2013

•What network virtualization is not•A definition of network virtualization•Similarities between network and compute virtualization•Benefits of network virtualization•Questions and answers about network virtualization

What are we going to talk about today?

Sunday, 26 May, 2013

“If you can’t explain it simply, youdon’t understand it well enough.”

- Albert Einstein

Sunday, 26 May, 2013

•Network virtualization is not:•A specific technology•A protocol like STT, NVGRE, or VXLAN•OpenFlow•SDN (where SDN = “using OpenFlow”)

•However, network virtualization could leverage any or all of these technologies

What network virtualization is not

Sunday, 26 May, 2013

Network virtualization is an abstraction layer that decouples logical (virtual) networks from the underlying physical network(s).

So what is network virtualization, then?

Sunday, 26 May, 2013

So what is network virtualization, then?

Physical Infrastructure

Compute Virtualization Abstraction Layer

Network Virtualization Abstraction Layer

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• It works on any physical hardware (only requires an IP fabric)•Decouples logical (virtual) networks from underlying physical networks (hardware independence)

•Does not require changes to applications/workloads in order to support network virtualization

•Doesn’t preclude the use of hardware support to enhance the virtualization functionality (e.g., hardware offloads)

How is it similar to compute virtualization?

Sunday, 26 May, 2013

How is it similar to compute virtualization?

Physical Compute & Memory (Dell, HP, IBM, Quanta,…)

Server Hypervisor Requirement: x86

Virtual Machine

Virtual Machine

Virtual Machine

Application Application Application

x86 Environment

Physical Network (Arista, Cisco, HP, Juniper, Cumulus,…)

Network Virtualization Layer Requirement: IP Transport

Virtual Network

Virtual Network

Virtual Network

Workload Workload Workload

L2, L3, L4-7 Network Services

Decoupled

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•Programmatic interfaces to network policy and provisioning; makes integrating/adopting a CMS or other automation & orchestration tools easier

•Physical network is simplified; only needs to focus on IP forwarding

•Hardware independence•Workload mobility

What are the benefits of network virtualization?

Sunday, 26 May, 2013

Questions &answers

Sunday, 26 May, 2013

Thank you!Don’t forget to provide feedback and rate this session on the last page of your Program Guide.

Sunday, 26 May, 2013