vmugit uc 2013 - 02 scotte lowe
TRANSCRIPT
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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
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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?
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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