OIF's Carrier Working Group Chair, Vishnu Shukla, Verizon shares network virtualization and SDN controls to enable transport network as a service to OFC2016 attendees.

1. Enabling Virtual Transport Network Service
Vishnu Shukla
OIF Carrier Working Group Chair
Verizon, USA
OIF SDN Panel @ OFC 2016
Anaheim, CA, USA
March 22, 2016

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

3. 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

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

5. 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

6. 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

7. Working Protection
 Request On Line
 Real-time planning
 Real-time setup
 Autonomous Control
 Dynamic expansion
 Optimization
• Multi-level SLA
• Recovery
• Network migrationPhysical 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

8. 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

9. 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

10. 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

11. 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

12. 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

13. 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

14. 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

15. 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?

16. 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

17. Summary
• Changing networking paradigms
• Operational issues
• Role of SDOs
• Monetizing network