Reconfigurable Optical Mesh and Network

Intelligence

Nazar Neayem Alcatel-Lucent

Internet 2 - Summer 2007 Joint Techs Workshop Fermilab - Batavia, IL

July 15-18, 2007.

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Network Architecture Evolution

Legacy deployment are based on Ring topology or non-DWDM

Multi layers with different traffic applications

Mesh traffic within the ring

Inter ring traffic is re-generated on the optical layer

Inter ring traffic is generated on layer 2/3

Wavelengths Switched

ROADM Rings InterconnectStatic Architecture ROADM Rings

Limited Mesh3 Degree

4 Degree

Full Mesh Network

2 Degree

Virtual Rings

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Migrating from Static to ROADM to WSS Mesh

Flexibility to support required migration

Short time ROI or pay as you grow

With installed equipment reuse

From Static ROADM

Eliminate stranded bandwidth

Accelerate service provisioning

Eliminate traffic disruption

Support real-time optical monitoring

ROADM WSS

Additional Mesh Flexibility

Colorless ports

A

Filter4321

10 G

E

4321

10G

E

OC

-48

A

Filter4321

10 G

E

thru

a/dFilt

er

1

a/d

thru

Filter

thru

C B

A

Filter

40 A

10GE Filter

23

4

A

Filter4321

10 G

E

Filter4321

10G

OC

-48

A

Filter4321

10 G

E

WSSBA

Thru WDM

BBC D E F HGWSS

BA

ThruWDM

BB C D E F HG

C

AAA 40OSC

OSC

WSSBA

ThruWDM

BB C D E F HG

AB

Filter1 2 3 4

10G

E

DWSSBA

ThruWDM

BB C D E F HGA

A

Filter4321

10 G

E

Filter4321

10G

OC

-48

A

Filter4321

10 G

E

C

AAA 40OSC

OSC

AB

Filter1 2 3 4

10G

E

ROADM

345612

ROADM

345612

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Adaptive and Agile Network

Network is continuous evolving

New Applications – VOD, IPTV, Content delivery

New Market Segments

Open and integrated transport interfaces

Routers and switches are having more layer one features

DWDM SFPs are becoming more and more sophisticated

Enhance fault isolation to Layer 1 and L2/3 network

New transport Rates – 40G and 100 G

Networks have to adapt to the early technology from early stage specifications to mature technology

Layer 0/1Layer 0/1

Layer 02/3

Layer 02/3

Tighter L1 and L2/3 Network Management

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Planning the Mesh Network Upgrading Nodes

Adding and deleting sites

Wavelengths planning

Wavelength blocking and reuse

Mesh Protection

path or span level WSS protection plans

Circuit verification:

Power, OSNR and dispersion

Since the networks are continuously evolving, active planning the physical layer and circuit growth is essential for network optimization

PlanPlan

Manages the lifecycle of network design

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Network Intelligence –Deployment

Manual commissioning Mesh network is not easy

Active comparison between design fiber characteristics and actual measurements

Transient Control

One amplifier output power setting or changes will affect other directions amplifiers

Network-wide automatic power equalization

Manual equalization becoming extremely difficult

Interconnecting WSS ports will affect the thru traffic in other part of the network

Fully Automated Commissioning Hides the Complexity and Guarantees optimal Network Performance

NMS

Planning Tool Planning output file

Commissioning Report

DeployDeploy

DWDM

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Network Intelligence – Mesh Circuit Provision

Minimize number of steps to provision a service Planning Tool pre-provisioning circuit validation

Protection and restoration schemes validation

Unique service per service identity

DWDM Color collision

A B C

G EF

D

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Network Management Integrated Intelligence

Tool

Design

BOMPort

Connectivity

Distances, Attenuation (BOL/EOL), CD, Fiber

type Traffic matrix NetworkTopology

AutomaticDesign

Traffic Connectivit

y

NE Build-up

NE Commissioning

NE discovery

IP adresses,proper SW load

Power CommissioningPower balancing

NetworkCommissioning

file

THRU-PATH COMMISSIONING

SERVICE COMMISSIONING

Transponder Wiring

Add Service(+Trouble shooting)

NMS

(in the field) (in the field)

PlanPlan

DeployDeploy

Manage

ManageNetwork Element

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Conclusion

As Optical Networks Migrating into MeshNetwork Intelligence is Becoming more Essential

Optical Layer is migrating from ROADM rings to all optical mesh

powered by the Wavelength Selective Switch (WSS)

New applications driving continual growth and different traffic

patterns, and higher bit-rates on links

Network Convergence Combined with L3 alien DWDM interfaces

Active and pro-active network awareness driving new techniques

for directly monitoring DWDM networks

As network growing in size and complexity, network intelligence is

hiding the complexity

10 | Reconfigurable Mesh | July 2007 All Rights Reserved © Alcatel-Lucent 2007, #####

Thank you