Vishnu Shukla of Verizon USA and the OIF Carrier Working Group Chair spoke at Globecom 2015 about the Verizon perspective towards SDN and how the OIF was working to support carrier needs to improve transport control through SDN.

1. Enabling Virtual Transport Network Service
Vishnu Shukla
OIF Carrier Working Group Chair
Verizon, USA
Globecom 2015
San Diego, CA, USA
December 8, 2015

2. Outline
• Network and emerging usage
• Virtual Transport Network Service (VTNS)
• Use cases
• OIF role
• Challenges

3. We’re Using the Network in a New Way
Paek period Traffic composition 1H2014/
 A new kind of business customer
• Using both private and public
clouds
• Elastic Compute and storage
requires an elastic network with
on demand services
 A new network is needed that supports:
• Bandwidth on demand to match
compute/storage on demand technology
• Multi-tenant
• Higher Utilization and greater efficiency
 A new kind of service Provider
• Supplies SaaS, IaaS, PaaS
• Elastic compute and storage
• Multi-tenant
 A new kind of Consumer
• Living in the cloud, mobile
• Applications are hosted in
the cloud
• Shifting from download to
streaming
• News events and new
applications load the
network in new ways
• Mobile
• Data, Data,…
Source: Coriant

4. Verizon Approach
• Automation
• Virtualization
• SDN
• Increased use of open source software and commodity hardware
• Flexible architecture
Ensures Verizon is not locked into a single technology or strategy
More than 70% of Verizon back office support systems are now fully
virtualized creating powerful efficiencies

5. Verizon Approach (cont.)
• Develop Vendor Ecosystem
- Leverage knowledge of some of our key suppliers
- Manage and coordinate SDOs

6. Virtualization
• Sharing of Transport Network Resources
• No dedicated resources
• Dynamically allocated
• Isolating traffic between different services
• Limited to service endpoints
• Exposing control at abstract level
• Varying levels

7. Virtual Network Service Definition
Take advantage of virtualization in SDN
Offer customers controllable network slice
Fixed
Connection
Dynamic
Connection
Dynamic
Connection
Client
site A
Client
site B
Client site A
Client site B
Client site D
Client site C
Client site A
Client site B
Client site D
Client site C
Virtual network
with vNE & vLink
Client
controller
Ctrl of
virtual XC
Connection controlled
by network providers
Leased Line
Endpoints Only
Fixed virtual
network topology
Static
Dynamic Dynamic
Connection
Virtual network
with vNE & vLink
Client
controller Rent virtual network
resources from provider
Client site
Virtual network
recursive
creation
Client site
Client site
Client site
Client site
Client siteClient site
Dynamic/recursive virtual
network topology

8. Working Protection
 Request On Line
 Real-time planning
 Real-time setup
 Autonomous Control
 Dynamic expansion
 Optimization
• Multi-level SLA
• Recovery
• Network migration
Physical Optical Network
Virtual Network Topology
Network as a Service
Online Slicing
Path Computation
Survivability Analysis
Global Optimization
Tenants
Seconds
Online
T-SDN
Controller
Benefits
Real Time
Resilient
Robust

9. Transport Network Virtualization
Use Cases
• Private Cloud
• More dynamic optical tunnels on-demand
• Data Center Interconnect (DCI)
• Integrate transport network with DC orchestration
• Integrated Packet and Optical Network
• Reconfigure optical domain based on IP

10. Transport
Controller
Physical
Infrastructure
Controls Physical Network
Control Layer
Infrastructure Layer
Transport Network
Today’s Model for SDN-Enabled
Transport Network
Application Layer
App App App
App controls exposed topology

11. Transport
Controller
Control Data Plane Interface
Infrastructure Layer
Application Layer
App App App
Control Layer
Client
Controller
SDN Control & Network Virtualization
Network Device
Control Virtual Network Interface
Northbound Interface
Business Boundary

12. Transport
Controller
Physical
Infrastructure
Controls Physical Network
Transport Control Layer
Infrastructure Layer
Transport Network
Introducing the Client Layer Control
Application Layer
App App App
Client Controls Virtual
Transport Network
Client Control Layer
App App App
Client
Controller 2
App controls exposed topology
VTN Topology 2
Client
Controller 1
VTN
Topology 1

13. Physical
Infrastructure
Controls Physical Network
Transport Control Layer
Infrastructure Layer
Transport Network
OIF Virtual Transport Network Services
Application Layer
App App App
Client Control Layer
App App App
App controls exposed topology
Transport
Controller
Client
Controller 2
VTN Topology 2
Client
Controller 1
VTN
Topology 1
Client Controls Virtual
Transport Network

14. Controls Physical Network
Provider
Control
Layer
Infrastructure Layer
Enables Transport Network as a Service
Application Layer
App App App
Client Control Layer
App controls exposed topology
Transport
Controller A
VTN Topology B
Client
Controller 1
VTN
Topology A
Client Controls
Virtual Network
Transport Network A Transport Network B
Transport
Controller B
Cloud DC Cloud DC
DC
Controller
DC
Controller

15. Carrier
Network
Connection
Type 1 – Fixed Connection

16. Carrier
Network
Connection
Type 2 – Dynamic Connection
Topology Exposes Endpoints
VTN
Topology

17. Carrier
Network
Connection
VTN
Topology
Type 3 – Dynamic Connection
Fixed Topology

18. Type 4 – Dynamic Connection
Dynamic Virtual Topology
Carrier
Network
VTN
Topology
Connection

19. What is OIF defining?
• Service Attributes
• Service Capabilities
• Recovery Requirements
• OAM Requirements
Harmonize Services Definitions for all players, i.e.
Transport Network Services
- Providers
- Users
- Equipment/SW Vendors

20. Service Attributes
• Service
• ID / name
• Service End Points
• Type of Service
• Topology
• ID / name
• Service Level Agreement
• Connection
• Type of Connection
• TE Parameters
• Traffic Matrix
• Scheduling
• Service Level Agreement

21. Service Capabilities
• Connection – Is the customer allowed to
• Create
• Delete
• Modify
• Query
• Receive automatic status updates?
• Topology – Is the customer allowed to
• Create
• Delete
• Modify
• Query
• Receive automatic status updates?

22. Recovery
• Connection Level Protection/Restoration
• May be provided by service provider or customer
• Topology Level Protection/Restoration
• Provided by provider
• How to use both levels
• Coordination mechanism when customer is responsible
for connection recovery

23. Client Connection Recovery
Carrier
Network
Connection
VTN Topology
Failurenotification

24. Provider Connection Recovery
Carrier
Network
Connection
VTN Topology
Failurenotification–HoldonRecoveryFailurenotification–repaired

25. Provider Topology Recovery
Carrier
Network
Connection
VTN Topology
Failurenotification–holdonrecoveryFailurenotification–repaired

26. OAM
• East-West
• Virtual Link OAM requirements
• North-South
• VTN Topology / Connection
• Query/automatic Status Requirements
Carrier
Network
Connection
VTN
Topology
Transport
Controller
Client
Controller
North-South
OAM
East-West OAM

27. Challenges
• Operational simplicity
• On-board new clients rapidly
• Differentiated service delivery
• Automate resource allocation on the fly
• Scalability
• Support X transactions per hour
• Security
• Service isolation and authentication per client
• Continuous Availability
• Disaster avoidance / recovery
• Current transport business model
• Migration Path
• Many SDOs, Open source activities
• Common Information Model

28. SDOs
ONF
OIF
(Transport)
IETF/IRTF
InterDC
ATIS
SW
Infrastructure
Southbound Interface
Northbound Interface
Openstack
BBF, MEF
ODL,
NFV
OPNFV
OPEN
SOURCE
3GPP
High Level SDN/Data Center Reference
Architecture with SDOs/Forums Focus
Data Center HW
Orchestration & Management
Service Service Service
Transport
SDN Controller
DC
Mgt
ONOS

29. Summary
• Changing networking paradigms
• SDN has great promise to improve transport control
• Programmability
• Ability to deliver new behaviors not (yet) considered by
standards, vendors, …
• Simplified multi-layer control
• Common behaviors in heterogeneous NE deployments
• Operational issues
• Role of SDOs
• Monetizing network

30. Thank You!
www.oiforum.com

31. Agenda
Transport SDN Drivers, Needs, Challenges
• Dave Brown, OIF VP of Marketing; Alcatel-Lucent
Global Transport SDN Prototype Demo
• Jonathan Sadler, OIF Technical Committee Vice Chair; Coriant
SDN Framework and APIs
• Lyndon Ong, OIF Market Awareness and Education Committee Co-Chair;
Ciena
Virtual Transport Network Service
• Vishnu Shukla, OIF Carrier Working Group Chair; Verizon
Wrap up