Programmability at Optical Transport Layer...2014/10/26 · Controller REST API Customer Console...

1 | Infinera Confidential & Proprietary

Programmability at Optical Transport Layer

Joint Session of Dante and Infinera: Multi-Layer SDN for Ultimate Flexibility in R&E Networks

Speaker: Guy Roberts, DanteSoumya Roy, Infinera Corporation

Soumya Roy, Infinera Corporation


Transport SDN use case for R&E Networks

LHCTier2 site

Tier1 site InfineraOTS controlled

MEF L2 Services

Tier1 site

SDN controller

Application

OF/REST

MEF L2 Services Pool of OTN B/W Pay as you grow B/W OTS REST API to manage connectivity


Transport Network-as-a-Service

Customer-Y

Customer-Y

Customer-Z

Customer-Z

Internet

Carrier SDN Controller

REST API

CustomerConsole

Access viaWeb-browser

L1/L0 NE

Customer-X

Customer-X

Customer X

B

D

A

C

ProgrammableTransport

Layer

Network access ports defined per end-customer

End-customer driven L1/L2 bandwidth services

Policy & SLA management centralized in Carrier SDN controller


Bandwidth growth & network costs not aligned

• Organic cost reductions alone insufficient for minimizing cost/bit

Network layers operating in isolation, not cooperation

More cross-layer intelligence needed for optimizing traffic

Inter-layer/inter-domain control plane lacking

Why SDN for Multi-Layer Networking?Simplify & Speed Provisioning, Enable Optimization

Vendor W Vendor Z

Vendor X Vendor Y

Optical Transport Network Layer

IP/MPLS Network Layer

?


Evolution Towards Intelligent Transport

Packet-Optical Transport(P-OTN)

Expensive Network Intelligence

Increase Scale, Reduce TCO

IP/MPLS Routers

ConvergenceMulti-layer Switching

OTN, WDM, ROADM, MPLS

ScalabilitySuper-channel Transmission

Coherent, Ready for 1TbE

AutomationOpen Software Control

Programmability, Resiliency

Intelligent Transport Networking

Intelligent transport networking simplifies total network & enables cost efficiency at Cloud scale.


Multi-layer Automation for Intelligent Transport

Need for multi-layer representation, topology computation & provisioning

SDN approach facilitates orchestration across layers & domains

Benefit: Network carries traffic at the most optimal layer

SDN Multi-Layer Orchestration & Optimization

$,W

Router

Optics

DigitalSwitching

$$$,kW

Converged P-OTN Layer

IP/MPLS Layer

Analytics Provisioning


SDN as good as the Underlying Data Plane

These characteristics are absent

from traditional optical networks

ProgrammableOptical Transport Networks

The ability to control network resources and properties at a distance

“No Compromise” for any applications


Integrated OTN with WDM

Network Efficiency

Digital Automation

Automating Everything

Terabit-Scale Multi-Layer Switch

GMPLS + Carrier SDN

Unified Control Plane

CDC FlexROADM

Network Reconfigurability

CapEx/OpEX Optimization


Optimized Multi-Layer Switching Architecture

Fully filled super-channels

High-capacity “express” routes

Optical-layer restoration<50ms service protection

Highly meshed demands

Low add/drop collector networks

Many 100G+ services Many <100G services

Digital Switching Optical Switching

Express

Collector

Optimized with Optimized withDigital Switching Optical Switching

Digital grooming maximizes WDM fill -> CapEx savings

Sub-l switching & service protection -> OpEx savings

ODU0/flex and packet switching granularity

Reconfigurable super-channel switching -> OpEx Savings

Optical express of filled super-channels -> CapEx savings

Wavelength & super-channel granularity

Photonic switching of super-channels

Service-level digital switching & grooming

(Ethernet/SDH/OTN/SAN)


Digital OTN abstraction of BW delivers optimal fit for SDN

In addition to OTN, SDN-control of ROADMs makes sense

But Controlling other analog functions (e.g. power) directly is too complex

Foundational Elements• Super-channels• OTN Switching• GMPLS Control Plane

10GbE service demand

40GbE service demand

Bandwidth Virtualization TM

In use65 Gb/s

Total200 Gb/s

75 Gb/s115 Gb/s

“Lots of physics is used to enhance transmission performance. SDN controller will not be able to manage this constant evolution” – Vz


Deploy Service-Ready Bandwidth with Super-channels

Dynamically control OTN services via Bandwidth virtualization

Dynamically activate additional line side BW via Instant Bandwidth

100G Era: 500G PoolNx100G Enabled Per Line Module

100G activated 100G available; software-defined activation

DTN-X

10G client traffic2.5G client traffic

100G clienttraffic

SDN control of Instant Bandwidth TM

Pay as you grow and Minimize OPEX


BX

C

A

Metro

Long Haul

Ultra-long Haul/Submarine

PM-QPSKSuper-Channel

PM-16QAMSuper-Channel

PM-BPSKSuper-Channel

Software Controlled ModulationMaximize flexibility, Minimize complexity


ABNO ControllerPolicy Agent

ALTO Server

Topology Module

I2RS Client

L3 PCE

VNTM

L1 PCE

Provisioning Manager

OAM Handler

Multi-LayerSDN Control

Layer

Telefónica Multi-Layer SDN Architecture PoC

Network as a Service (NaaS)

Multiple south-bound protocols• REST/JSON• OpenFlow• Netconf/YANG• PCEP• BGP-LS

Multi-layer PCE-based controller: Point and click IP/MPLS services w/automatic router & transport layer provisioned automatically

Application: Dynamic MPLS tunnel service creation in multi-layer, multi-vendor environment.

OTS

OTS

OTS

MX-240-1

MX-240-2

MX-240-3

DTN1 DTN3

DTN2

100G

100G100G10G

10G 10G

10G 10G10G

DWDMSuper-Channels

Bandwidth Virtualization

Open Transport Switch (OTS)

Digital Switching

IntelligentTransportAbstraction


Multi-layer orchestration with OSCARS-TE

REST/JSON

OpenFlow 1.0

Configuration Manager

TopologyExchange Multi-Layer

Path EngineMulti-LayerProvisioning

Multi-Layer Topology App

ESNet Circuits Reservation System (OSCARS)

SDN Controller

Floodlight

Traffic Optimization

Engine

OSCARSTEMulti-Layer SDN

Management Modules

Optical Transport Network

Packet Network

X

Y

Z

A, B, C – Packet Switches

X, Y, Z – Optical Transport

A

B

C

Site A

Hot Interconnect 2014

OTS

OTS

OTS

Site B


Intelligent Transport drives new approach to scaling networks• Service-ready capacity, BW delivery @ Internet speed

• Converged Digital (packet, OTN) and ROADM operations

Multi-Layer SDN has significant benefits• Streamline multi-layer, multi-domain operation

• Rapid application development through standard APIs

• New dynamic “on-demand” services (eg, NaaS, BoD)

• Global view creates opportunity for total network optimization

Carriers seeking evolutionary, open approach• Leverage existing robust optical transport control plane functions

• Open SDN control layer, flexible integration options

Summary


Thank You

Programmability at Optical Transport Layer...2014/10/26 · Controller REST API Customer Console...

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