net-virt-with-nsx-131030153733-phpapp02

7/25/2019 net-virt-with-nsx-131030153733-phpapp02

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Network Virtualization with VMware NSX

Scott Lowe, VCDX

Engineering Architect

Networking & Security BU, VMware, Inc.

http://blog.scottlowe.org


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Before we get started

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!

Get involved! Audience participation is encouragedand 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 todayssession and share them online

!This presentation will be made available online after

the event


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our name is familiar...

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Compute Virtualization

Networking can be a barrier to the

software-defined data center

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Software Defined Data Center

SOFTWARE-DEFINEDDATACENTER SERVICES

VDC

! Provisioning is slow

! Placement is limited

! Mobility is limited

! Hardware dependent

!

Operationally intensive

Any Physical

Infrastructure


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How can we solve this challenge?

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Many technologies are claiming to beable to address this challenge

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Merchant silicon

OpenFlow

Northbound APIs

Open vSwitch

Network overlays

SDN

SDN controllers

OpenStack Networking

Fabrics

STT

VXLAN

NVGRE

SR-IOV

TRILL

LISP


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By themselves, these technologiesdont change the operational model.

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To change the operational model,whats needed is the right abstraction.

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Lets look at compute virtualization

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!

Multiple forms of virtualization existed in x86-basedcomputing 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.


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Along comes VMware and the VM

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!

VMware introduced a new abstraction: thevirtual

machine(VM)


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Why is the VM important?

!

The VM abstraction encompassed other virtualizationtechnologies, 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, cloneVMs, 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)

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So what does this have to do withnetwork virtualization?

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Whats needed is the right abstraction

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!

The right abstractionthe virtual networklets uschange the operational model

!Changing the operational model brings benefits:

! Greater speed and agility

! Lower operational overhead

! Decreased capital expenditures

! But...its really about greater speed & agility


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What is a virtual network?

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Server Hypervisor

Requirement: x86

VirtualMachine

VirtualMachine

VirtualMachine

Application Application Application

x86 Environment

Decoupled

Hardware

Software

Network Hypervisor

Requirement: IP Transport

VirtualNetwork

VirtualNetwork

VirtualNetwork

Workload Workload Workload

L2, L3, L4-7 Network Services

General Purpose Server Hardware

(Dell, HP, IBM, OpenCompute, Quanta)

General Purpose IP Hardware

(Arista, Cisco, HP, Juniper, Accton)


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Networks arent just about connectivity

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!

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


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Key functions of a virtual network

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1. Decouples

Physical

Virtual

2. Reproduces 3. Automates

Network

Operations

CloudOperations

Hardwareindependence

Operational benefitsof virtualization

No change to networkfrom end host perspective

Virtual

Physical


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VMware NSX provides the rightabstractionthe virtual networkto

enable operational change thataddresses pain points and meetsbusiness needs.

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N t ki b b i t th


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Networking can be a barrier to the

software-defined data center

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VDC

! Provisioning is slow

! Placement is limited

! Mobility is limited

! Hardware dependent

!

Operationally intensive

Any Physical

Infrastructure

N t k i t li ti dd thi


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Network virtualization addresses thischallenge

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VDC


Network Virtualization

! Programmatic provisioning

! Place any workload anywhere

! Move any workload anywhere

! Decoupled from hardware

!

Operationally efficient

Any Physical

Infrastructure


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Looking a bit deeper at VMware NSX

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S t h l i i ht fi d


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Some technologies you might findhelpful

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!

Linux!Open vSwitch (OVS)

!OpenFlow

!OVSDB

!Cloud management systems

! vCloud Automation Center (vCAC)

! OpenStack

!

CloudStack


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Questions & answers

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Scott Lowe

[email protected]

Thank you

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Date post:	27-Feb-2018
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