Software Defined Optical Networks with Optical OpenFlo · 1 Optical Cloud Connectivity 2...

Jörg-Peter Elbers, Achim Autenrieth ADVAnced Technology August 2012 Rev 1.0

Software Defined Optical Networks with Optical OpenFlow

© 2012 ADVA Optical Networking. All rights reserved. Confidential. 2 2

Outline

• Software Defined Networks & OpenFlow

• Optical Domain Extensions and Applications

• Summary


SDN & OpenFlow in a Nutshell


Software Defined Networking (SDN)

Data Plane

Network OS

App App App App App App App App

Virtual Network Slices

API

API

API

End-u

ser

valu

e c

reation

SDN enables

new networking

paradigms

through flexibility,

agility, and

programmability!


• Deterministic behaviour,

predictable performance,

rapid convergence

• Simplified planning,

global optimization,

off-line analysis

• Secure multi-tenancy &

infrastructure sharing

• Better machine &

service mobility

• Application-driven

networking

Network programmability

HW abstraction and virtualization

Centralized management & control

Flow oriented data plane

SDN Principles & Benefits

Separation of data and control plane

Key SDN innovations: virtualization and application-level programmability. Key SDN innovations: virtualization and application-level programmability.


OpenFlow in a Nutshell

The most prominent protocol for Open Source SDN implementations. The most prominent protocol for Open Source SDN implementations.

https://www.opennetworking.org/index.php


Early SDN/OF Adopters

Research & campus networks Web 2.0 Data centers


SDN Inside The Data Center

Virtual server Virtual server Virtual

network Virtual

network

Virtual storage Virtual storage

Orchestration of IT & network resources Orchestration of IT & network resources

Storage pool Fabric interconnect Server pool

SDN adds missing piece to the virtualization puzzle: Network virtualization. SDN adds missing piece to the virtualization puzzle: Network virtualization.


Emerging SDN Applications

• Extend SDN into the optical domain

• Provide low-latency/high capacity

• Hide optical layer complexity

Packet-based Cloud Access 2 Optical Cloud Connectivity 1

• Extend SDN to access & backhauling

• Manage QoE with constrained capacity

• Allow content/service-aware optimization

Programmable connectivity for data center & carrier infrastructure Programmable connectivity for data center & carrier infrastructure

Optical network

Carrier Ethernet access


Optical OpenFlow


• Allow flexible resource pooling on a global scale

• New applications

• Follow the sun/dark

• Load balancing

• Bandwidth calendaring

• Bulk transfers

• Optical SDN for low latency/high capacity

• But: Optical brings new challenges to SDN

SDN for Cloud Connectivity

Optical OpenFlow requires extensions on protocol & architecture level. Optical OpenFlow requires extensions on protocol & architecture level.


Circuit Switching with OpenFlow

12

Circuit Flows

Out Port

Out Lambda

Starting Time-Slot

Signal Type

VCG 12 In

Port In

Lambda

Starting Time-Slot

Signal Type

VCG

Circuit Switching Extensions

Good for electrical switches, but limited support for optical wavelength switching. Good for electrical switches, but limited support for optical wavelength switching.

https://www.opennetworking.org/index.php


Optical OpenFlow Extensions

C

Any λ

λ Block

WS

S

WS

S

WSS

WSS

λ1 λ2 λ3

TX

WSS

1:N

WSS

1:N WSS

1:N

WSS

1:N WSS

1:N WSS

OpenFlow

Controller

CFLOW_MOD

CFLOW_MOD

OpenFlow Agent

OpenFlow Agent

OpenFlow Agent

CFLOW_MOD

OFELIA Optical OpenFlow Networking Testbed at University of Essex

OFELIA Optical OpenFlow Networking Testbed at University of Essex

Topology & Node Discovery

Optical Node Model

Dynamic Switching Constraints

Topology & Node Discovery

Optical Node Model

Dynamic Switching Constraints

Lightpath Setup / Teardown with Optical Power Balancing &

Optical Impairment Awareness

Lightpath Setup / Teardown with Optical Power Balancing &

Optical Impairment Awareness

OpenFlow Prototype for FSP 3000 ROADM platform OpenFlow Prototype for

FSP 3000 ROADM platform


Optical OpenFlow Modes

• Flat Network Mode

• Optical network exposed to OpenFlow controller

• OpenFlow controller with circuit & optical extensions

• One OpenFlow agent per network element

• Optical layer control as OF controller app

• Encapsulated Optical Network Mode (aka Fat Switch Mode)

• Optical network abstracted as virtual switch

• Plain packet-based OpenFlow controller

• Single OpenFlow agent per optical domain

• Optical layer control by established technologies


Visualization

Facility

High Capacity

ROADM Network

End-User

Orchestration of IT &

Networking Resources

by Controller App

(3) Reserve Resources (2) Submit Request including

User Context

(1) Publish Service and

Infrastructure Information

Request

Path Computation

Path Computation

Streaming

Server

First Optical OpenFlow Demonstration Packet over Wavelength-Switched ROADM Network

Joint demo with Uni Essex (NOW: BRISTOL UNIVERSITY) @ Future Internet Assembly, Aalborg, May 10-11, 2012


First International Demonstration Multi-Domain & Multi-Technology Packet over Fixed/Flexi Grid

See ECOC Postdeadline Paper Th.3.D.2


Summary


Summary & Conclusions

• SDN brings programmability and

virtualization to the networking world

• OF is the most prominent open-source

SDN protocol today

• Optical extensions allow cloud

connectivity for bandwidth/latency sensitive applications

• Demonstration have proven technical feasibility

• Standardization is pursued in the ONF (New Transport Group)

OpenFlow

Source: Gartner technology hype cycle, adapted from Wikipedia

[email protected]

Thank you

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.

© 2012 ADVA Optical Networking. All rights reserved. Confidential. 20 20 tu-berlin.de ibbt.be ethz.ch telekom.com eict.de i2cat.cat nec.com essex.ac.uk advaoptical.com stanford.edu

Eight Interconnected OpenFlow Islands

OFELIA

• Project partners: EICT, DTAG, UESSEX, I2CAT, TUB, NEC, IBBT, ETH Zürich, ADVA, STANFORD

• Duration: Sep. 2010 – Aug. 2013 (36 months)

• Provide a unique experimental facility based on OpenFlow

• Control the network itself – precisely and dynamically

• Allows virtualizing and controlling the network environment

through secure and standardized interfaces

• Allows for Experimentation on multi-layer and multi-technology

networks – Program your own cloud network!

• Islands publicly available for experiments

• OFELIA belongs to the second wave of FIRE projects under FP7

EU FP7 OFELIA OpenFlow in Europe - Linking Infrastructure and Applications

More information at: http://www.fp7-ofelia.eu

UEssex Island equipped with ADVA ROADMs

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Software Defined Optical Networks with Optical OpenFlo · 1 Optical Cloud Connectivity 2...

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