networking is the barrier to cloud
TRANSCRIPT
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Network is the barrier to Cloud
Somik Behera Twi6er: @StrikesMe
Open vSwitch
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Acknowledgements: • Mar>n Casado, Founder & CTO – Nicira Inc/VMware • James Hamilton, VP & Dis>nguished Engineer, Amazon
Web Services
Open vSwitch
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Agenda • Datacenter Economics • Cloud Expecta>ons • You would ask “Why is Network the barrier”? – Dynamics/Inflexibility – NW aren’t built for flexibility – Efficiency – Cloud DC economics – Scale – NW scale limits cloud scale.
• The only Solu>on – Move networking to edge. • Benefits • CloudStack & Network Virtualiza>on
Open vSwitch
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Cloud Datacenter Economics
Open vSwitch
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Cloud Expecta>ons Dynamic Environment • VMs come and go anywhere in the datacenter. • Tenants with differing network requirements come and go.
High Efficiency • Cloud == Cheaper than dedicated • Cheaper == High infrastructure u>liza>on.
Scalable yet performant & efficient • Single cloud across many physical pods or even datacenters. • High efficiency and high performance even at large scale
Dynamic
Efficient
Scalable
Open vSwitch
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Cloud Dynamics – Network is the barrier
• Network gear weren’t built to have config state.
• Network configura>on is a mess – Manual configura>on – CLI, screen-‐scaping etc, very bri6le, not cloud friendly.
• No support for IP mobility • Today’s NW oversubscrip>on limits VM placement.
Open vSwitch
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Cloud Dynamics – Network is the barrier
Credit: Borrowed from h6p://perspec>ve.mvdirona.com
Open vSwitch
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Cloud Expecta>ons
High Efficiency • Cloud == Cheaper than dedicated • Cheaper == High infrastructure u>liza>on.
Efficient
Open vSwitch
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Cloud Efficiency – Network is the barrier • Datacenter Economics -‐ Network – 8% of of monthly cost -‐ Network gear – 5.2% of power – Network gear
• Datacenter Economics – Server – 57% of monthly cost – Server gear – 64% of power cost – Server gear – Server u>liza>on – 10-‐30% even aler virtualiza>on, in cloud environments.
• Network HW cost not the dominant factor.
Open vSwitch
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Cloud Efficiency – Network is the barrier
• Biggest op>miza>on opportunity in DC cost model. – Improve server u>liza>on!
• Biggest hurdle to improving server u>liza>on in cloud? – Find out in Next slide ;)
Open vSwitch
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Cloud Efficiency – Network is the barrier
Physical Server
VM VM VM VM Virtual Machines
Workloads are >ed to the Network!
Open vSwitch
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Cloud Expecta>ons
Scalable yet performant & efficient • Single cloud across many physical pods or even datacenters. • High efficiency and high performance even at large scale
Scalable
Open vSwitch
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Cloud Scalability– Network is the barrier • Size limita>on of a single broadcast domain – Workload mobility & placement challenges
• VLAN Limita>on – Spec. limita>on -‐ 4096 limit – Implementa>on -‐ Server CPU u>liza>on issues.
• Scale up get expensive before reliable – “Asympto>cally approaches unaffordable but never gets to good enough” – James Hamilton
• Tradi>onal NW management & opera>ons tool breakdown – can’t run a cloud without ops!
Open vSwitch
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Network Sucks -‐ So… what do we do?
• What do we do – Pull networking to the edge – i.e. Server/Hypervisor.
• Benefits – Simplify physical Network – Cloud NW complexity not exposed to physical network
– Richer seman>cs at edge – Distributed – less aggregate processing at a single point
– Solware is more flexible than hardware.
Open vSwitch
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How does this work?
VM VM VM VM VM VM VM VM VM
Physical Network Internet
Open vSwitch
Open vSwitch
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Benefits of this paradigm shil • Flexible, efficient and be6er scalable “cloud” networks! • Network Hardware independent and non disrup>ve. • Mul>-‐hypervisor support • Place and move any workload, anywhere • Supports both physical and virtual workloads • Programma>c network infrastructure control • VLAN and MAC scalability • Secure tenant isola>on on share physical infrastructure
Open vSwitch
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This new world and CloudStack
• CloudStack has a pluggable architecture. • CloudStack offers support for many NW models – Use tradi>onal physical networking – Use Network Virtualiza>on non disrup>vely
• Nicira NVP ( this new architecture) is a fully integrated Network Virtualiza>on solu>on for CloudStack
• Running in Produc=on today @ Schuberg-‐Phillis today!
Open vSwitch
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Thanks! Q&A
Its >me to Virtualize the Network!
Open vSwitch