reconfigurable optical mesh and network intelligence

Reconfigurable Optical Mesh and Network

Intelligence

Nazar Neayem

Alcatel-Lucent

Internet 2 - Summer 2007 Joint Techs Workshop

Fermilab - Batavia, IL

July 15-18, 2007.

All Rights Reserved © Alcatel-Lucent 2007, #####2 | Reconfigurable Mesh | July 2007

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


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

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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 0/1

Layer 02/3

Tighter L1 and L2/3 Network Management


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

Plan

Manages the lifecycle of network design


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

Deploy

DWDM


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


Network Management Integrated Intelligence

Tool

Design BOMPort

Connectivity

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

Traffic matrix Network

Topology

Automatic

Design

Traffic Connectivity

NE Build-up

NE Commissioning

NE discovery

IP adresses,

proper SW load

Power CommissioningPower balancing

Network

Commissioning

file

THRU-PATH

COMMISSIONING

SERVICE

COMMISSIONING

Transponder Wiring

Add Service(+Trouble shooting)

NMS

(in the field) (in the field)

Plan

Deploy

Manage

Network Element


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


Thank you

reconfigurable optical mesh and network intelligence

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