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How Does SDN Fit Into The Data Centre?Stephan RettenbergerVP Marketing, ADVA Optical Networking
© 2014 ADVA Optical Networking. All rights reserved. Confidential.22
1994
1994
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1994
"One of the technologies Vice President Al Gore is pushing is the information superhighway,
which will link everyone at home or office to everything else—movies and television shows,
shopping services, electronic mail and huge collections of data.“
October 26, 1993
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1994
The birthplace of ADVA Optical Networking
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1995
ESCON connections3
Fiber pair1Data centers2
OCM 4
Optical Networking adds value to the data center
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• Protocol agnostic native transport of all data over single color.
• 16G Fibre Channel with future 32GFC increases real throughput.
• Certifications and partners.
Business Continuity
ProtocolsApplications
Data Mirroring
RemoteBackup
GDPS®
Snapshot
ServerClustering
Optical Network
Mainframe
Server
LAN
Storage
Site A Site B 4/8/10/16GFibre Channel
1/10/40/100GEthernet
SDR/DDR/QDRFDR/FDR-10
InfiniBand
FICON
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UserInterfaces
3rd PartyApps
Transport Apps
Orchestration
SDN Controller
Orchestration
Hypervisor
Storage ComputeNetwork
NetworkHypervisor
Business Continuity
Transport SDN
192 Channels
Data Center Interconnection Today
100G Encryption
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How Does SDN Fit Into The Data Centre?
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SDN in a Single Sentence• The hope/expectation of better efficiency/utilization through
identifying flows of packets and making smarter holistic decisions
• A good analogy would be the Air Traffic Control system
* flightradar24.com* http://virtualskies.arc.nasa.gov/atm/6.html
* http://mattsflight.blogspot.com
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Inside vs Outside the Data Center
Inside Google’s Iowa Data Center Outside Google’s NC Data Center
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Inside the Data Center
• Virtualizing Switching• Storage and Compute are virtualized.• Switching is only thing remaining.
• Common Management• Different Vendors• Different Functions• One Control
• Commoditized Routers• Open hardware platform.• Dumb hardware does as told.
Inside Google’s Iowa Data Center
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Outside Google’s NC Data Center
Outside the Data Center
• Smarter Transport Switching• More dynamic use• Less overprovisioning
• Common Management• Among Transport Vendors• Among Switch Vendors• Among all equipment in network
• Virtual Sandbox for 3rd Party Apps• Open Layer 1 Transport to innovation.• Ability to host simulaneous sessions.
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Virtualization & Programmability
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The Promise
• The “SDN” mantra
• The ability of software to program the network’s forwarding plane in real time
Programmability
• Separation of features from HW realization
• For network applications this is NFV
• For resources sharing this is Hypervisor
Virtualization
• Rapid Service Definition and Deployment
• Service Automation
• Viable SW Sources
Service Agility
• Simplified Operations
• Platform Consolidation
• Savings in Application and HW
Reduced Cost
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• Function Virtualization• Rework of network
applications to run on arbitrary hardware, independent of custom networking hardware
• Resource Virtualization• Functionality to logically abstract
a single set of network resources and make them usable as independent networks
VirtualizationNFV & Hypervisors
Separation of “what” from “where”
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ProgrammabilitySDN
CP
CP
CP CP
CP
Network Mgmt
SDN
Controller
Network Management
API’s
AppOSS’sUsers
App App
• Present Mode of Operation• Forwarding Plane is under the
control of embedded control plane and device provisioning
• SDN Mode of Operation• Forwarding Plane is programmable
in real time by independently developed software
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Direct
Programmable Optical Networks
SDN ControllerSDN Controller
Overlay
NetworkHypervisor
Finding the appropriate level of abstraction is key to virtualization
• Direct model envisions SDN API’s placed on every optical switching element
• Exposes SDN Controller to analog complexities of optical network
• Only viable in simple networks
• Overlay model abstracts the optical network and presents it as simple elements to the controller
• Hides analog optical complexities from controller and apps
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Virtualization in Optical Networks
SDN Controller A
Resource Virtualization
NetworkHypervisor
Network Hypervisor creates programmable and virtualized optical network
• Overlay model can be extended to abstract the network into multiple networks, for multiple controllers
• Allows tenant controllers to control virtualized slices of the carrier network
• Function Virtualization is not a hot topic in Optical
SDN Controller B
SDN Controller C
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Where Transport Fits in SDN Model
Storage Compute
CPU
Hypervisor
• Hypervisors allowed Storage and Compute resources to be managed together.
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Where Transport Fits in SDN Model
Storage NetworkCompute
CPU
Hypervisor
Orchestration
SDN
• SDN allowed Networking to join in the fun through an Orchestration layer.
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Where Transport Fits in SDN Model
Storage NetworkCompute
CPU
Hypervisor
Orchestration
SDN
UserInterfaces
3rd PartyApps
• Applications can be written on top of Orchestration layer.
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Where Transport Fits in SDN Model
Storage NetworkCompute
CPU
Hypervisor
Orchestration
UserInterfaces
3rd PartyApps
SDN Controller
• Transport is added by extending the SDN controller function.
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Where Transport Fits in SDN Model
NetworkHypervisor
Storage NetworkCompute
CPU
Transport
Hypervisor
Orchestration
UserInterfaces
3rd PartyApps
SDN Controller
• A Network Hypervisor virtualizes the transport network and presents an abstracted representation to the SDN controller.
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Where Transport Fits in SDN Model
NetworkHypervisor
Storage NetworkCompute
CPU
Transport
Hypervisor
Orchestration
UserInterfaces
3rd PartyApps
FutureAwesomeness!
SDN Controller
• Now that all network layers are included in the control model, end-to-end, new applications are possible.
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Where Transport Fits in SDN Model
NetworkHypervisor
Storage NetworkCompute
CPU
Transport
Hypervisor
Orchestration
UserInterfaces
3rd PartyApps
FutureAwesomeness!
SDN Controller Optical Network ControllerManagement
Fault & Alarms
Configuration
Accounting
Performance
Security
Control
Topology Disc
Path Compute
Provisioning
Resource Mgr
Policy Mgr
Database
Flow DB
Topology DB
Resource DB
Policy DB
Optical Network Hypervisor
• The Network Hypervisor has a big job in managing all Transport.
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Use Cases and Trials
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Mission
Application Drivers in Optical Networks
• Datacenter Connectivity
• Cloud Bursting
• Secure multi-tenancy
• Optical VPN
• Multi-Layer Optimization
Use Cases
NMS / CP / SDN
DC Site 1
MAN / WAN
DC Site NEnterprise
Tenant B cloud
Tenant C cloudTenant A cloud
SDN turns the network into a programmable resourceSDN turns the network into a programmable resource
1TB Data Transfer
Speed Duration
10G 15 min
1G 2.5h
100M 1 day
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Demonstration of SDN Use Cases
ECOC 2013 Postdeadline Paper
ECOC2012
ECOC 2012 Postdeadline Paper
OFC/NFOEC2013
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SDN for Dynamic SP Infrastructure• Provisioning for peak traffic is losing battle, and only getting worse.
• Answer is dynamic network infrastructure.
Daytime Configuration All Offices/Sites working
Nighttime Configuration Backup between A/B Double the bandwidth
Other Configurations Site B to C Site C to A
Site A
Site B
Site C
1x 10G
1x 10G
1x 10G
Site A
Site B
Site C
2x 10G
Site A
Site B
Site C
2x 10G
Site A
Site B
Site C
2x 10G
Site A
Site B
Site C
1x 10G
1x 10G
1x 10G
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Summary
• Data Centers and Optical Networking – a winning team• DC interconnect and DC access
• SDN turns the network into a programmable resource• Network Hypervisor makes optical layer programmable
• Resource Virtualization• Network Hypervisor abstracts the network into slices
• Multitude of trials allow us to showcase various use cases
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Thank You
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