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Network Virtualization with VMware NSX
Scott Lowe, VCDX
Engineering Architect
Networking & Security BU, VMware, Inc.
http://blog.scottlowe.org
1
Before we get started
§ Get

involved! Audience participation is encouraged
and requested.
§ If you use Twitter, feel free to tweet about this session
(use @MyVMUG or @BostonVMUG)
§ I encourage you to take photos or videos of today’s
session and share them online
§ This presentation will be made available online after
the event

2
Your name is familiar...

3
Networking can be a barrier to the
software-defined data center
Software Defined Data Center
VDC

SOFTWARE-DEFINED
DATACENTER SERVICES

§ Provisioning

is slow
§ Placement is limited
§ Mobility is limited
§ Hardware dependent
§ Operationally intensive

Compute Virtualization

Any Physical
Infrastructure

4
How can we solve this challenge?

5
Many technologies are claiming to be
able to address this challenge
SR-IOV

Open vSwitch

SDN controllers

STT
Network overlays
LISP

VXLAN

TRILL
Merchant silicon

SDN
OpenFlow

Fabrics
NVGRE

OpenStack Networking
Northbound APIs

6
By themselves, these technologies
don’t change the operational model.

7
To change the operational model,
what’s needed is the right abstraction.

8
Let’s look at compute virtualization
§ Multiple

forms of virtualization existed in x86-based
computing before VMware
80386 “protected mode”
§ Virtual memory
§ Application virtual machines (e.g., JVM)
§ Remote presentation (X Window System)
§

§ These

were all important developments, but...

None of them had the power to change the
operational model.

9
Along comes VMware and the VM
§ VMware

introduced a new abstraction: the virtual
machine (VM)

10
Why is the VM important?
§ The

VM abstraction encompassed other virtualization
technologies, but enabled operational change
§ Operational change enabled customers to address
pain points (speed of provisioning, for example)
Now users could easily create VMs, destroy VMs, clone
VMs, start/stop/pause VMs
§ VMs encouraged more standardized configurations
§ VMs could be deployed programmatically, which enables
self-service tools and methodologies
§

§ Success

encouraged adoption; adoption encouraged
ecosystem development (positive feedback loop)
11
So what does this have to do with
network virtualization?

12
What’s needed is the right abstraction

§ The

right abstraction—the virtual network—lets us
change the operational model
§ Changing the operational model brings benefits:
Greater speed and agility
§ Lower operational overhead
§ Decreased capital expenditures
§ But...it’s really about greater speed & agility
§

13
What is a virtual network?

Application

Application

Workload

Application

Workload

Workload

L2, L3, L4-7 Network Services

x86 Environment
Software
Virtual
Machine

Virtual
Machine

Virtual
Machine

Server Hypervisor

Virtual
Network

Decoupled

Requirement: x86

Virtual
Network

Virtual
Network

Network Hypervisor
Requirement: IP Transport

Hardware

General Purpose Server Hardware
(Dell, HP, IBM, OpenCompute, Quanta)

General Purpose IP Hardware
(Arista, Cisco, HP, Juniper, Accton)

14
Networks aren’t just about connectivity
§ A

virtual network must be more than just connectivity
§ It has to also provide virtual network services:
Routing
§ Firewalling
§ Load balancing
§ VPNs
§

§ It

has to be extensible, allowing technology partners to
“plug into” the virtual network to bring additional
services and functionality to bear for customers

15
Key functions of a virtual network
Virtual

Virtual

Network
Operations

1. Decouples

2. Reproduces

3. Automates

Physical
Hardware
independence

Physical
No change to network
from end host perspective

Cloud
Operations
Operational benefits
of virtualization

16
VMware NSX provides the right
abstraction—the virtual network—to
enable operational change that
addresses pain points and meets
business needs.

17
Networking can be a barrier to the
software-defined data center
Software Defined Data Center
VDC

SOFTWARE-DEFINED
DATACENTER SERVICES

§ Provisioning

is slow
§ Placement is limited
§ Mobility is limited
§ Hardware dependent
§ Operationally intensive

Compute Virtualization

Any Physical
Infrastructure

18
Network virtualization addresses this
challenge
Software Defined Data Center
VDC

SOFTWARE-DEFINED
DATACENTER SERVICES

§ Programmatic

provisioning
§ Place any workload anywhere
§ Move any workload anywhere
§ Decoupled from hardware
§ Operationally efficient

Network Virtualization
Compute Virtualization

Any Physical
Infrastructure

19
Looking a bit deeper at VMware NSX

20
Some technologies you might find
helpful
§ Linux
§ Open

vSwitch (OVS)
§ OpenFlow
§ OVSDB
§ Cloud management systems
vCloud Automation Center (vCAC)
§ OpenStack
§ CloudStack
§

21
Questions & answers

22
Thank you
Scott Lowe
slowe@vmware.com

23

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Network Virtualization with VMware NSX

  • 1. Network Virtualization with VMware NSX Scott Lowe, VCDX Engineering Architect Networking & Security BU, VMware, Inc. http://blog.scottlowe.org 1
  • 2. Before we get started § Get involved! Audience participation is encouraged and requested. § If you use Twitter, feel free to tweet about this session (use @MyVMUG or @BostonVMUG) § I encourage you to take photos or videos of today’s session and share them online § This presentation will be made available online after the event 2
  • 3. Your name is familiar... 3
  • 4. Networking can be a barrier to the software-defined data center Software Defined Data Center VDC SOFTWARE-DEFINED DATACENTER SERVICES § Provisioning is slow § Placement is limited § Mobility is limited § Hardware dependent § Operationally intensive Compute Virtualization Any Physical Infrastructure 4
  • 5. How can we solve this challenge? 5
  • 6. Many technologies are claiming to be able to address this challenge SR-IOV Open vSwitch SDN controllers STT Network overlays LISP VXLAN TRILL Merchant silicon SDN OpenFlow Fabrics NVGRE OpenStack Networking Northbound APIs 6
  • 7. By themselves, these technologies don’t change the operational model. 7
  • 8. To change the operational model, what’s needed is the right abstraction. 8
  • 9. Let’s look at compute virtualization § Multiple forms of virtualization existed in x86-based computing before VMware 80386 “protected mode” § Virtual memory § Application virtual machines (e.g., JVM) § Remote presentation (X Window System) § § These were all important developments, but... None of them had the power to change the operational model. 9
  • 10. Along comes VMware and the VM § VMware introduced a new abstraction: the virtual machine (VM) 10
  • 11. Why is the VM important? § The VM abstraction encompassed other virtualization technologies, but enabled operational change § Operational change enabled customers to address pain points (speed of provisioning, for example) Now users could easily create VMs, destroy VMs, clone VMs, start/stop/pause VMs § VMs encouraged more standardized configurations § VMs could be deployed programmatically, which enables self-service tools and methodologies § § Success encouraged adoption; adoption encouraged ecosystem development (positive feedback loop) 11
  • 12. So what does this have to do with network virtualization? 12
  • 13. What’s needed is the right abstraction § The right abstraction—the virtual network—lets us change the operational model § Changing the operational model brings benefits: Greater speed and agility § Lower operational overhead § Decreased capital expenditures § But...it’s really about greater speed & agility § 13
  • 14. What is a virtual network? Application Application Workload Application Workload Workload L2, L3, L4-7 Network Services x86 Environment Software Virtual Machine Virtual Machine Virtual Machine Server Hypervisor Virtual Network Decoupled Requirement: x86 Virtual Network Virtual Network Network Hypervisor Requirement: IP Transport Hardware General Purpose Server Hardware (Dell, HP, IBM, OpenCompute, Quanta) General Purpose IP Hardware (Arista, Cisco, HP, Juniper, Accton) 14
  • 15. Networks aren’t just about connectivity § A virtual network must be more than just connectivity § It has to also provide virtual network services: Routing § Firewalling § Load balancing § VPNs § § It has to be extensible, allowing technology partners to “plug into” the virtual network to bring additional services and functionality to bear for customers 15
  • 16. Key functions of a virtual network Virtual Virtual Network Operations 1. Decouples 2. Reproduces 3. Automates Physical Hardware independence Physical No change to network from end host perspective Cloud Operations Operational benefits of virtualization 16
  • 17. VMware NSX provides the right abstraction—the virtual network—to enable operational change that addresses pain points and meets business needs. 17
  • 18. Networking can be a barrier to the software-defined data center Software Defined Data Center VDC SOFTWARE-DEFINED DATACENTER SERVICES § Provisioning is slow § Placement is limited § Mobility is limited § Hardware dependent § Operationally intensive Compute Virtualization Any Physical Infrastructure 18
  • 19. Network virtualization addresses this challenge Software Defined Data Center VDC SOFTWARE-DEFINED DATACENTER SERVICES § Programmatic provisioning § Place any workload anywhere § Move any workload anywhere § Decoupled from hardware § Operationally efficient Network Virtualization Compute Virtualization Any Physical Infrastructure 19
  • 20. Looking a bit deeper at VMware NSX 20
  • 21. Some technologies you might find helpful § Linux § Open vSwitch (OVS) § OpenFlow § OVSDB § Cloud management systems vCloud Automation Center (vCAC) § OpenStack § CloudStack § 21