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Jorg-Peter Elbers delivers presentation at IP Expo 2012 in London about how expanding OpenFlow SDN protocol beyond the data centre will lead to more efficient cloud networking environments and business innovation.
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Jörg-Peter ElbersADVAnced TechnologyIP Expo, London, Oct 2012
Expanding OpenFlowBeyond the Data Centre
© 2012 ADVA Optical Networking. All rights reserved. Confidential.22
Outline
• Software Defined Networks & OpenFlow
• Optical Domain Extensions and Applications
• Summary
© 2012 ADVA Optical Networking. All rights reserved. Confidential.33
SDN & OpenFlow in a Nutshell
© 2012 ADVA Optical Networking. All rights reserved. Confidential.44
Software Defined Networking (SDN)
Data Plane
Network OS
App App App App
Virtual Network Slices
API
API
API
End
-use
r valu
e c
reati
on SDN enables
new networking
paradigms
through flexibility,
agility, and
programmability.
© 2012 ADVA Optical Networking. All rights reserved. Confidential.55
• Deterministic behaviour, predictable performance, rapid convergence
• Simplified planning, global optimization, off-line analysis
• Secure multi-tenancy & infrastructure sharing
• Better machine & service mobility
• Application-driven networking
Network programmability
HW abstraction and virtualization
Centralized management & control
Flow oriented data plane
SDN Principles & Benefits
Separation of data and control plane
Key SDN innovations: virtualization and application-level programmability.Key SDN innovations: virtualization and application-level programmability.
© 2012 ADVA Optical Networking. All rights reserved. Confidential.66
User Expectations
More efficient network, faster service delivery & lower hardware costs.More efficient network, faster service delivery & lower hardware costs.
© 2012 ADVA Optical Networking. All rights reserved. Confidential.77
OpenFlow in a Nutshell
The most prominent protocol for Open Source SDN implementations. The most prominent protocol for Open Source SDN implementations.
© 2012 ADVA Optical Networking. All rights reserved. Confidential.88
Early SDN/OpenFlow Adopters
Research & campus networks Web 2.0 Data centers
© 2012 ADVA Optical Networking. All rights reserved. Confidential.99
SDN Inside The Data Center
VirtualserverVirtualserverVirtual
networkVirtual
network
VirtualstorageVirtualstorage
Orchestration of IT & network resourcesOrchestration of IT & network resources
Storage pool Fabric interconnect Server pool
SDN adds missing piece to the virtualization puzzle: Network virtualization.SDN adds missing piece to the virtualization puzzle: Network virtualization.
© 2012 ADVA Optical Networking. All rights reserved. Confidential.1010
SDN Beyond The Data Center
• Extend SDN into the optical domain
• Provide low-latency/high capacity
• Hide optical layer complexity
Packet-based Cloud Access2Optical Cloud Connectivity1
• Extend SDN to access & backhauling
• Manage QoE with constrained capacity
• Allow content/service-aware optimization
Programmable connectivity for data center & carrier infrastructure
Optical network
Carrier Ethernetaccess
© 2012 ADVA Optical Networking. All rights reserved. Confidential.1111
Optical OpenFlow
© 2012 ADVA Optical Networking. All rights reserved. Confidential.1212
• Allow flexible resource pooling on a global scale
• New applications • Follow the sun/dark• Load balancing• Bandwidth calendaring• Bulk transfers
• Optical SDN for low latency/high capacity
• But: Optical brings new challenges to SDN
SDN for Cloud Connectivity
Optical OpenFlow requires extensions on protocol & architecture level.Optical OpenFlow requires extensions on protocol & architecture level.
© 2012 ADVA Optical Networking. All rights reserved. Confidential.1313
Circuit Switching with OpenFlow
13
Circuit Flows Out Port
Out Lambda
StartingTime-Slot
Signal Type VCG13 In
Port In
Lambda Starting
Time-Slot Signal Type VCG
Circuit Switching Extensions
Good for electrical switches, but limited support for optical wavelength switching.Good for electrical switches, but limited support for optical wavelength switching.
© 2012 ADVA Optical Networking. All rights reserved. Confidential.1414
Optical OpenFlow Extensions
C
Any λ
λ Block
WS
S
WS
S
WSS
WSS
λ1λ2λ3
TX
WSS1
:N W
SS
1:N WSS
1:N
WS
S
1:N WSS
1:N WSS
Connectivity & Topology DiscoverySignal Mapping & Format Compatibility
Optical Node Model:Wavelenth Continuity &
Dynamic Switching Constraints
Optical Performance ConstraintsSequential Lightpath Setup/Teardown
Optical Power Balancing
OpenFlow Support for FSP 3000 ROADM platform
Optical extensions required to deal with the analogue nature of the optical layer. Optical extensions required to deal with the analogue nature of the optical layer.
OSC(Out-of-band)
© 2012 ADVA Optical Networking. All rights reserved. Confidential.1515
Optical OpenFlow Modes
• Flat Network Mode
• Optical network exposed to OpenFlow controller
• OpenFlow controller with circuit & optical extensions
• One OpenFlow agent per network element
• Optical layer control as OF controller app
• Encapsulated Optical Network Mode (aka Fat Switch Mode)
• Optical network abstracted as virtual switch
• Plain packet-based OpenFlow controller
• Single OpenFlow agent per optical domain
• Optical layer control by established technologies
Compromises possible between hiding optical complexity and exposing topology.
© 2012 ADVA Optical Networking. All rights reserved. Confidential.1616
VisualizationFacility
High CapacityROADM Network
End-User
Orchestration of IT & Networking Resources
by Controller App
(3) Reserve Resources(2) Submit Request including
User Context(1) Publish Service and
Infrastructure Information
Request
PathComputation
configure server
Streaming Server
First Optical OpenFlow DemonstrationPacket over Wavelength-Switched ROADM Network
Joint demo with Uni Essex(NOW: BRISTOL UNIVERSITY)@ Future Internet Assembly,Aalborg, May 10-11, 2012
© 2012 ADVA Optical Networking. All rights reserved. Confidential.1717
First International DemonstrationMulti-Domain & Multi-Technology Packet over Fixed/Flexi Grid
See ECOC‘12 Postdeadline Paper Th.3.D.2
© 2012 ADVA Optical Networking. All rights reserved. Confidential.1818
Use Case Analysis: Cloud DatacenterCapacity savings by flexible network resource allocation
Uniform node-to-node traffic
> 30% node capacity savings from shared model if excess traffic > base traffic.
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
00:0
001
:00
02:0
003
:00
04:0
005
:00
06:0
007
:00
08:0
009
:00
10:0
011
:00
12:0
013
:00
14:0
015
:00
16:0
017
:00
18:0
019
:00
20:0
021
:00
22:0
023
:00
Net
wor
k Util
izati
on
Time
basetraffic
excesstraffic
0%10%20%30%40%50%60%70%80%
Nod
e ca
paci
ty s
avui
ngs
Excess traffic / base traffic
Shared vs. dedicated resource model
N = 4
N = 8
N node ring
Dedicated node resources for base trafficModel a): dedicated resources for excess trafficModel b): shared resources for excess traffic
© 2012 ADVA Optical Networking. All rights reserved. Confidential.1919
Summary
© 2012 ADVA Optical Networking. All rights reserved. Confidential.2020
Summary & Conclusions
• SDN brings programmability and
virtualization to the networking world
• OF is the most prominent open-source
SDN protocol today
• Extensions allow OF-controlled
optical cloud connectivity
• Prospects: more network efficiency and faster service delivery
• SDN & Openflow are still at the beginning of its life cycle …
… and require ongoing development
OpenFlow
Source: Gartner technology hype cycle,adapted from Wikipedia
jelbers@advaoptical.com
Thank you
IMPORTANT NOTICE
The content of this presentation is strictly confidential. ADVA Optical Networking is the exclusive owner or licensee of the content, material, and information in this presentation. Any reproduction, publication or reprint, in whole or in part, is strictly prohibited.
The information in this presentation may not be accurate, complete or up to date, and is provided without warranties or representations of any kind, either express or implied. ADVA Optical Networking shall not be responsible for and disclaims any liability for any loss or damages, including without limitation, direct, indirect, incidental, consequential and special damages, alleged to have been caused by or in connection with using and/or relying on the information contained in this presentation.
Copyright © for the entire content of this presentation: ADVA Optical Networking.
© 2012 ADVA Optical Networking. All rights reserved. Confidential.2222tu-berlin.de ibbt.be ethz.ch telekom.com eict.de i2cat.cat nec.com essex.ac.uk advaoptical.com stanford.edu
Eight Interconnected OpenFlow Islands
OFELIA
• Project partners: EICT, DTAG, UESSEX, I2CAT, TUB, NEC, IBBT, ETH Zürich, ADVA, STANFORD
• Duration: Sep. 2010 – Aug. 2013 (36 months)
• Provide a unique experimental facility based on OpenFlow
• Control the network itself – precisely and dynamically
• Allows virtualizing and controlling the network environment
through secure and standardized interfaces
• Allows for Experimentation on multi-layer and multi-technology
networks – Program your own cloud network!
• Islands publicly available for experiments
• OFELIA belongs to the second wave of FIRE projects under FP7
EU FP7 OFELIA OpenFlow in Europe - Linking Infrastructure and Applications
More information at: http://www.fp7-ofelia.eu
UEssex Island equipped with ADVA ROADMs
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