Check out Jörg-Peter Elber's slides from this week's SDN World Congress in Bad Homburg

1. Transport SDN Use Cases and Lessons Learnt
Jörg-Peter Elbers, VP Advanced Technology
SDN World Congress, Bad Homburg, 2013

2. Software-Defined Networking
Network
Network
Apps
User I/Fs
Apps
Network Apps
Network Apps
Network Apps
Orchestration
Open APIs
(e.g. RESTful)
Network
services
Platform
services
Applications & derived
network services
Open Northbound
Interfaces
Extensions
SDN Controller
Platform
e.g. OpenFlow,
Netconf/YANG,
vendor-specific
Southbound
Interfaces
Network
Elements
Turn the network into a programmable resource under central control.
2
© 2013 ADVA Optical Networking. All rights reserved. Confidential.

3. Optical Transport SDN – Early Attempts
“If all you have
is a hammer,
everything looks
like a nail.”
Abraham Maslow, 1966
Bottom-up approach: Add circuit & optical extensions to OpenFlow (1.0).
3
© 2013 ADVA Optical Networking. All rights reserved. Confidential.

4. Packet Switch != Optical Switch
Packet Switch
Optical l-Switch
Signal format
Digital electronic
Analog optical
Signal structure
Ethernet frames
Signal dependent
Payload visibility
Yes
No
Topology discovery
In-band (e.g. LLDP)
Out-of band (e.g. OSC)
Fabric connectivity
Any-to-any
Constrained
Implicit
Dep. on signal quality
Any order
Sequential
Path feasibility
Path set-up
Target: Optical layer connectivity without having to deal with optical complexity.
4
© 2013 ADVA Optical Networking. All rights reserved. Confidential.

5. SDN vs. “Legacy” Optical Transport
SDN Principles

Flow/circuit oriented
data plane

Centralized
management & control

HW abstraction
and virtualization

Network
programmability

“Legacy” Transport
Separation of data
and control plane
Top-down approach: Facilitate optical layer virtualization & programmability.
5
© 2013 ADVA Optical Networking. All rights reserved. Confidential.

6. with Extensions
and/or
Restful API
Physical ressources
Client
interfaces
Virtual Network Controller #N
Abstraction
Virtual Network Controller #1
Derived topology
Optical Transport SDN Vision
Provider
interface
Make the optical network a resource pool for low-latency, high speed connectivity.
6
© 2013 ADVA Optical Networking. All rights reserved. Confidential.

7. Optical Network-as-a-Service
„I need a
10GbE
connection
from A to Z.“
„I need a
wavelength
channel
from B to G.“
Bandwidth
as a
Service
Wavelength
as a
Service
„I need
150GHz of
contiguous
spectrum
from E to W.“
Optical
Spectrum
as a
Service
Optical network virtualization can happen at different interception points.
7
© 2013 ADVA Optical Networking. All rights reserved. Confidential.

8. Use Case #1
Private Enterprise Cloud
VM Cluster
IBM G8264
OF Switch
•
IBM V7000
Storage
Enterprise owns DCs &
network in-between
Site A
Dual 10G
•
SDN abstracts
network as one
VM Cluster
Flexible
optical
bandwidth
sharing
Site C
•
FSP 3000
Site B
Storage
Storage
interconnect fabric
VM Cluster
Inter-DC fabric
managed the same
way as intra-DC
switches
Published: September 2013
More than 30% network capacity savings over static configuration.
8
© 2013 ADVA Optical Networking. All rights reserved. Confidential.

9. Use Case #2
Service Provider Data Center Interconnect
Datacenter
applications
Datacenter to
WAN applications
WAN
applications
OpenStack/OpenFlowApp
App
enabled DC workflow
App
App
App
App
automation
Service-provider
bandwidth-on-demand
Cloud
Controller
CP
NW
ST
Optical Network
Controller (ONC)
1TB Data Transfer
15 min
1G
Datacenters
Duration
10G
Optical WAN
Speed
2.5h
100M
1 day
Published: ECOC PDP, September 2013
Automated spin-up of elastic cloud resources in minutes rather than days.
9
© 2013 ADVA Optical Networking. All rights reserved. Confidential.

10. Use Case #3
Multi-Layer Network Optimization
•
Central controller for
joint IP and WDM
resource optimization
•
IP-to-WDM offloading
& optical restoration
Published : OFC/NFOEC, March 2013
Software-controlled network optimization yielding up to 50% CAPEX savings.
10
© 2013 ADVA Optical Networking. All rights reserved. Confidential.

11. Use Case #4
Multi-Domain & Multi-Technology Network Services
Published : ECOC PDP, September 2012
Delivering Optical-Spectrum-as-a-Service over multiple technology domains.
11
© 2013 ADVA Optical Networking. All rights reserved. Confidential.

12. Lessons Learnt
• SDN brings programmability & virtualization to optical transport
• Improves network efficiency, but simpler operation is the real
opportunity
• Basic standards and protocols are there, but require further work
• Definition of open interfaces (esp. north, east, west) is crucial
• AVDA Optical Networking is actively engaged in ONF, ODP, IETF
to drive further evolution
Extending SDN to transport enables true end-to-end provisioning of data flows.
Go with the flow …
12
© 2013 ADVA Optical Networking. All rights reserved. Confidential.

13. Thank you!
jelbers@advaoptical.com
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.

14. Network Virtualization
Virtual Network 2
Virtual Network 1
Networks 1 & 2
Any form of partitioning or combining a set of network resources, and
presenting it in an abstracted form to users such that each user, through his
set of resources, has a unique, separate view of the network.
[Wang et al., JLT, 12/2012]
User: Data center tenants, virtual machines, workloads or applications.
Resources: Fundamental (nodes, links) or derived (topologies), can be virtualized recursively.
Requirements: User isolation, configuration independence, elasticity and programmability.
14
© 2013 ADVA Optical Networking. All rights reserved. Confidential.