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Embracing Transport SDN for Open Networking Architectures

Yabin YE yeyabin@huawei.com

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Move Towards SDN

Transport SDN Use Cases

Examples of Transport SDN

Agenda

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ONF Definition of SDN Architecture

Source: ONF white paper -- Software-Defined Networking (SDN): The New Norm for Networks

Controller

APP1 APPn

OF Switch

OF Switch

OF Switch

OF Switch

OF: OpenFlow

Secure Channel

Switching HW

Thin SW

Flow Table

OpenFlow Switch

Network: SDN Based Architecture Datacenters: Open Flow Switch Diagram

Main Characteristics: the Control and Data planes are decoupled, Centralized Controller, Open & Programmable, Virtualized Data plane

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Industry Mainstream SDN Models Open flow Model (IT ) Open API Model (CT )

Equipment programmable internally

•Open and standard North & Southbound interfaces, the forwarding plane is standardized, programmable

•More flexible •Difficult to evolve from existing

network

Equipment programmable by Open API

•Open and standard Northbound interface

•To preserve and reuse existing equipment

•Medium flexibility, not completely open

•Easy evolution from existing equipment

Different degrees of network openness and programmability, different flexibility, different difficulties to achieve, applied for

different scenarios.

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The Industry Progress of SDN Google G-Scale Software

Defined WAN

ICP operators vigorously embrace SDN.

Telecom operators are also actively exploring SDN application in telco network and focus on Cloud technology / Open Network/ synergy , such as Telefonica, NTT, Vodafone, DT, FT, BT, etc.

Sample Utilization after SDN Deployment Close to 100%

Industry Level: 30%~40%

Google's software-defined backbone drives WAN links to 100% utilization

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Move Towards SDN

Transport SDN Use cases

Examples of Transport SDN

Agenda

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Transport SDN Main Characteristics and Values

Advanced Controller Reliability, scalability,

security and flexible

deployment

IT Style NBI

New programming paradigm: IT style IDE, complete open…

Multi-mode SBI

PCEP, Openflow, etc, multiple SBI addressing multiple scenarios

Flexible Infrastructure

Modulation format, distance, bandwidth, fully programmable

Automation Virtualization Synergy Flexible Open

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Automatic Operation for Online Service Delivering

NMS Planner

Commissioning tools

Performance Monitor

Designer Client

Today: w/o SDN The tools and function unit are

off-line and isolated, lack of real time and interoperability.

Slow TTM

Future: w/ SDN The tools and function unit

are all joined up, sharing the data. The service delivering

is online and fast

Automation Virtualization Synergy Flexible Open

Planner Designer etc

T-SDN Controller

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Virtual management to reduce the CAPEX and OPEX

Automation Virtualization Synergy Flexible Open

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Centralized Mgmt for multi-domain Transport Network

Control plane

Data Plane Data Plane

Data Plane

Data Plane

Data Plane

SDN Controller

Controls End-to-End Network

Client’s Virtual View & Control of End-to-End Network

Transport Network A Transport Network B Transport Network C

3

2 4

1 8 B 6

7 5

A

Control Layer

Infrastructure Layer

Centralized multi-domain management, shorten service

TTM

Automation Virtualization Synergy Flexible Open

Control plane

Data Plane

Control plane

Data Plane

Control plane

Data Plane

Control plane

Data Plane

Control plane

Data Plane

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SDN-based IP + Optical Synergy to Improve E2E Network Resource Utilization

Automation Virtualization Synergy Flexible Open

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Multilayer Unified Control for MS-OTN, Providing Optimal Bandwidth Resources

Automation Virtualization Synergy Flexible Open

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Unified Control for Future Flex Optical Network, Ease the Network Management

SBI

Coding Control

Spectrum Control

Wavelength Planning ...

T - Controller

• Transport network trends to be flex-Optical (flex-grid, flex-OTN, etc).

• T-SDN provide centralized control of the flex-optical for easy network planning and easy deployment of new services.

100G 200G 400G 1T 2T

Automation Virtualization Synergy Flexible Open

Application Layer

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T-SDN Maximizes the Future Flex-Optical Network Efficiency

Automation Virtualization Synergy Flexible Open

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Open platform to simplify OSS and achieve innovative applications

Automation Virtualization Synergy Flexible Open

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Virtual Transport Service (Network as a Service)

Automation Virtualization Synergy Flexible Open

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Bandwidth on Demand (Service aware & dynamic bandwidth)

Automation Virtualization Synergy Flexible Open

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T-SDN Value Summary

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Move Towards SDN

Transport SDN Use Cases

Examples of Transport SDN

Agenda

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T-SDN Helps China Telecom to Improve OAM Efficiency

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T-SDN Helps Operator to Improve Bandwidth Value

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T-SDN Helps Operator to Improve Cross-vendor Interoperability

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The information contained in this document is for reference purpose only, and is subject to change or withdrawal according to specific customer requirements and conditions.