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Enabling IP+Optical Networks with NCS BRKSPG-2116

Lorenzo Ghioni - Product Manager

Diane Patton - Technical Leader

Abstract

In this session we will start by reviewing the advantages of IP+Optical solutions

including a modeling exercise.

We follow by briefly reviewing optical consideration factors for IP+Optical design,

including G.709 framing, optical impairments management, and modulation schemes

optimization.

We will then discuss IP+Optical Architectures and how new ROADM functionalities

enable a more seamless integration of Routing and Transport capabilities which can

result in better optimization of network cost, flexibility and scalability to support

unknown needs.

We will cover Network integration architectures.

Last but not least, we will discuss how the Network Convergence System recently

launched can enable seamless integration that allows for optimal bandwidth usage

and cost savings.

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Agenda

Why Converged IP+Optical Architecture?

Consideration Factors for IP+Optical Design

IP+Optical Integration Architectures and Management

New ROADM Trends

Multilayer Control Plane

Network Architectures with Network Convergence System

Conclusion

Why Converged IP+Optical Architectures

The Challenge…

Reduce Cost via:

Incremental changes:

- CAPEX reduction

- OPEX reduction

- Improved Utilization

Architectural changes:

- Convergence of layers, products

Declining

Revenue

per bit

Exponential

Traffic Growth

Seek new sources of Revenue

Traffic Evolution No Longer Just North and South; Now East and West

IP Core

Access

SP Services/ Content

Third-Party Services/ Content

Business

Unified

Center

Unified

Center

Regional

Center

Regional

Center

Difficult to Optimize when IP & Optical Networks Treated as Parallel “Ships in Night”

Optical

Layer 0-2

Deployed First and Has Legacy

IP Service Intelligence

Layer 3-7

IP Was Layered on top of Optical

Resulting in:

• Inefficient Utilization

• Disconnected Capacity Planning

• Independent Provisioning/Management

• Poor Visibility Between Layers

• Reduced Service Velocity

IP Service Intelligence

Layer 3-7

Optical

Layer 0-2

Service Velocity Months to Minutes

Best of Both Worlds

Efficient Utilization Increased Profits

Resource Visibility Better SLAs

Path Optimization Higher Resiliency

Network Simplification Better TCO

Operational Integration Better TCO

Converging IP and Optical Networks Simplified Operations, Faster Path to New Revenues

From Incremental to Architectural Changes

Incremental Changes

– WDM Integration on Router Line Cards

– Virtual Transponder

– Proactive FRR

Architectural Changes

– IP started as one of many Services to be Transported

– Today IP is the main (the only in some cases…) Service to be Transported

Network Modelling allows us to look at today’s needs to determine which is the best approach to use

Example Network

Consider a (fictitious) National Scale IP network using a mixture of channel types and approaches

– 10GE channels

– 100GE channels

– 10GE and 100GE channels

– Single hop and bypass channel routing

Examine ramifications on

– Channel count

– Link bundle sizes

– Total router fabric

– Largest individual router fabric

Network Topology

44 Nodes

61 Spans totaling 34,000 km

– Individual span lengths range from 160 km to 1200 km

Traffic Model

20 Tbit/s offered load

– Full mesh of 946 demands, sized by end-node traffic weighting

– Largest Demand = 275 Gbit/s; Smallest Demand = 14 Mbit/s

– ~10% Express Traffic, dual span-node disparate routed

– ~90% Best Effort Traffic, shortest routed

Load Traffic onto Single-Hop 10GEs

Channels Capacity Max Bundle

4,670 46.7 Tbit/s 260

Total Fabric Transit Fabric Largest Fabric

115.6 Tbit/s 93.4 Tbit/s 9.5 Tbit/s 10GE SH

Cross-sectional area a bundle capacity

Load Traffic onto Single-Hop 100GEs

4,670 46.7 Tbit/s 260

496 49.6 Tbit/s 26

115.6 Tbit/s 93.4 Tbit/s 9.5 Tbit/s

10GE SH

100GE SH

4,670 46.7 Tbit/s 260

496 49.6 Tbit/s 26

1,367 13.7 Tbit/s 27

10GE SH

Minimum threshold for bypass creation 55% of capacity

100GE SH

10GE BYP

Load Traffic onto Bypass 10GigEs

4,670 46.7 Tbit/s 260

496 49.6 Tbit/s 26

1,367 13.7 Tbit/s 27

244 24.4 Tbit/s 5

10GE SH

Minimum threshold for bypass creation 55% of capacity

100GE SH

10GE BYP

100GE BYP

Load Traffic onto Bypass 100GigEs

4,670 46.7 Tbit/s 260

496 49.6 Tbit/s 26

1,367 13.7 Tbit/s 27

244 24.4 Tbit/s 5

194/169 21.1 Tbit/s 5/7

10GE SH

100GE SH

10GE BYP

100GE BYP

10GE/100GE

Minimum threshold for bypass creation 65%/55% of capacity

Mix Bypass 100GE and Bypass 10GigE

Network Modelling Summary

Single Hop Network Design (independent IP and Optical Networks) is the one which requires the Higher Number of Channels (10GE and 100GE) and the Biggest Fabric Capacity

Traffic Bypass Design (IP and Optical are one Network) allows to reduce the Number of Channels and requires Smaller Fabric Capacity

While this is somewhat a simple case (no multi-period modelling, no Regeneration optimization, no Sensitivity to different growth patterns), it clearly shows the advantages of Convergence

IP and Optical need to be both Flexible and Intelligent – Collaborate to the definition of Optimal solution based on given Constraints

CONSIDERATION FACTORS FOR IP+OPTICAL DESIGN

Linear Channel Impairments

Attenuation

Caused by fiber and passive device losses

Polarization Mode Dispersion

Caused by fiber

Chromatic Dispersion

Caused by fiber

OSNR Degradation

Caused by ASE in EDFA’s

Linear Optical Impairments Solutions

Attenuation

EDFA’s can help overcome attenuation, applied per span, but add noise

…Hybrid Raman/EDFA amplification can overcome attenuation with minimal noise. FEC also helps.

Polarization Mode Dispersion

Generally have to live with it. Regenerate signal when required.

…Now compensated for in Digital Signal Processing via Coherent Detection

Optical Signal to Noise Ratio (OSNR)

Nothing can overcome losses in OSNR! Must regenerate!

…But advanced Forward Error Correction can lower OSNR requirements

Chromatic Dispersion

DCU’s can help mitigate dispersion problems, applied per span, but add cost, latency, and loss

…Now compensated for in Digital Signal Processing via Coherent Detection

Improve OSNR Performance with FEC

FEC extends reach and design flexibility, at “silicon cost”

G.709 standard improves OSNR tolerance by 6.2 dB (at 10–15 BER)

Offers intrinsic performance monitoring

(error statistics)

Higher gains (8.4dB) possible by enhanced

FEC (with same G.709 overhead) OSNR

(Bit E

4 5 6 7 8 9 10 11 12 13 14

CODING GAIN

Pre-FEC

Post-FEC

How to Increase Transport Capacity?

Increase capacity

(bit rate) per

wavelength

Increase the

number of

wavelengths

50 GHz ITU

Infrastructures

Feasible ADC

bandwidth

400G & Terabit Superchannels

Triple System Capacity

Increase

Modulation

Efficiency

Flexible

Spectrum

Allocation

Trade off of Reach and Capacity

• Solid lines SMF, Dashed ELEAF, no Raman

• 90 km and 25 dB per span

• Symbol-rate 27.75 Gbaud

• BER 4E-3

The Superchannel concept

Information distributed over a few subcarriers spaced as closely as possible forming a

variable rate superchannel

Each subcarrier working at a lower rate, compatible with current ADCs and DSPs

IP+OPTICAL ARCHITECTURES AND MANAGEMENT

DWDM Building Blocks

Transponders

Multiplexer

Optical

Amplifiers

(Reconfigurable)

Optical Add/Drop

multiplexer

Demultiplexer

Integrated DWDM

in client

OA (R)OADM OA OEO

Client

The Traditional DWDM Network Approach

• Transponder “owned” by the Optical Team

• Router “owned” by the L3 Team

• Generally operate as “ships in the night”.

Transponder Router

Transport NMS Control Router NMS Control

OTN (G.709) Hierarchy and Frame Structures

OTN defined a fixed “hierarchy” of payloads

OTN started as a pure wrapper around WDM client signals to improve reach and manageability.

Recently it has developed into a complex multiplexing structure.

ODU-Flex allows flexible sub wavelength grooming.

Frame Payload (OPU)

ODU-0 1,238,954 kbps

OTU-1 2,488,320 kbps

OTU-2 9,995,276 kbps

OTU-3 40,150,519 kbps

OTU-4 104,355,975 kbps

OTN Building Blocks

Digital Wrapper – Opti-electrical and optical components :

Transponders and ROADM – Header information for management of optical

layer – Forward Error Correction for increasing optical

drive distances

Optical Cross

Connect

WDM transponders

Adds G.709 headers

Multi-degree ROADM

Cross Connecting Lambdas

Dropping full lambdas

OTN Electrical Cross Connect

Grooming and aggregation Sub-lambda interfaces

(SONET, OTN, Ethernet, ESCON)

OTN Hierarchy and Cross Connecting – Electrical solution – Time Division Multiplexing Technology – Switching Hierarchy

Why OTN?

Legacy Client Services - Today

Predominantly 10G DWDM systems

SONET/SDH Client Systems 10G with no plans or need for additional capacity

Packet Services growing rapidly and stressing 10G DWDM systems

40G/100G DWDM Upgrades

Fixes the demand and fiber exhaust issues

More capacity per lambda

Mismatch between some client systems and lambda b/w

Requirement for OTN Hierarchy

Router to OTN Switch Concept

• Lower speed interfaces on Router (< 100G)

• OTN originates and terminates on the switch

• Leaves switch colored or grey

Router(s) OTN

(OTU4)

Transponder in Router

• Transponder integrated in the router

• OTN wrapper and wavelength terminate on the router

• Eliminate interconnects/OEO Conversions

Router ROADM

Transponder in Router Proactive Protection

Reactive Protection P

working

protect

FEC Cliff

Transponder

Proactive Protection

protect

working

FEC Cliff

Protection Trigger

Switch FEC

Router

IP-over-DWDM Proactive Protection

Traditional

Virtual Transponder Transponder Virtualized into the Optical Network EMS

Secure Management

Channel

Router Management • L2/L3 Interface Information

• Routing Protocols

• IP Addressing

• Security

Transponder/ROADM Router

Network Management

DWDM Management

• L1 Interface Information

• Wavelength Usage

• Power Levels and Thresholds

• Performance Monitoring

• Respects boundaries between packet / optical administrative groups

Managing with Cisco Prime Optical

End to End IP+Optical Circuit Creation

End to End OCHTRAIL Circuit View

Troubleshooting IP+Optical – Alarm management

Check DWDM controller parameters – Power values, OTN counters, LOS, LOF, pre-FEC BER, TTI, etc.

Optical Shelf Concept Transponder virtualized as part of the router

• Transponder becomes an extension of the router

• Power levels, OTN overhead, and alarms available in real-time on the router

• DWDM interface controlled and monitored by router CLI or OTN MIB

• Control Plane Interaction

Transponder

Shelf Router

Shelf Secure

Management

Channel

Proactive Protection with Grey Interface 100G Protection with ASR9k

Router

ASR 9000

ONS 15454 M6

protect

working

FEC Limit

Protection Trigger

Switch

NEW ROADM TRENDS with NCS 2000

ROADM Background

ROADM brought flexibility to DWDM networks.

Any wavelength. Anywhere.

But it was a static flexibility.

Moves and changes required a truck roll.

ROADM Background

Colored Add/Drop

Fixed port frequency assignment

One unique frequency per port

Directional Add/Drop

Physical add/drop port is tied to a

ROADM “degree”

Due to these restrictions, a change in direction or frequency of an optical circuit required a

physical change (move interface to different port) at the endpoints.

… because ROADM ports were colored and directional.

ROADM Advances

Colorless Add/Drop

No port-frequency assignment

Any frequency, any port

Omni-Directional Add/Drop

Add/Drop ports can be routed to/from

any ROADM degree

Colorless and Omni-directional add/drop bring touchless

flexibility, and hence programmability, to ROADM networks.

With Colorless plus Omni-Directional, the frequency and direction of the signal can be changed,

without requiring a change of ROADM add/drop port.

ROADM Advances

Directional Add/Drop

ROADMs are by definition

Contentionless

With Contentionless, N instances of a given wavelength (where N = the number of line

degrees in the ROADM node) can be add/dropped from a single device, eliminating

any restrictions on dynamic wavelength provisioning.

Contentionless allows multiple

instances of the same frequency to

add/drop from one unit.

But…Colorless and Omni-directional introduce wavelength

contention at the add/drop stage. Need a Contentionless

architecture.

Flex Spectrum ROADM

50 GHz ITU Grid

Wasted Spectrum

4 x 100Gb/s in 200GHz

Efficient Spectrum Use

4 x 100Gb/s in ~125GHz

50 GHz ITU Grid 12.5 GHz Slices

>50% Increase in Capacity

Can switch “Superchannels” with varying bandwidths, > 50GHz

Different Modulation Techniques Accommodates different BW and Distance Needs

Flexible Modulation Designs

Trunk interfaces with programmable modulation schemes will be available

Interface could support 50G BPSK, 100G QPSK, 200G 16-QAM, and 250G 16-QAM

Design algorithm will choose modulation schemes to minimize interface/regenerator count

Design algorithm also ensures that, e.g. 5 x 100G are never loaded on 2 x 250G

50G BPSK will only be used on paths bearing solely 10G demands (and hence will be sparingly used)

Use same models as single-rate QPSK, and contrast

MacFlex Concept

NG-DWDM interface enables reach vs payload bandwidth trade off.

– Optimize modulation format for required network performance – BPSK

– QPSK

– 8QAM

– 16QAM

– 64QAM

– Available payload bandwidth per wavelength ranges widely.

– Inefficient and not granular enough

Adjust Mac layer with 5GBps granularity

Key Takeaways

Tunable optics and Colorless and allow changing wavelength with no physical re-cabling

Omni-directional allows changing direction with no physical re-cabling

Allow for any to any switching in the optical domain

Allow for dynamic re-routing in the optical domain

Flexible modulation, spectrum and mac flex allow for anywhere, any rate

Converge layers to increase link utilization

Use the C-band spectrum to it’s full capacity

Also, these features open the door for a new agile DWDM control plane

Multilayer Control Plane

Agile Control Plane Requirements

Requirements

Tunability Colorless Omni-

Directional Impairment-

Enabling Zero Touch End to End Solution

What is Wavelength Switched Optical Network?

It is a GMPLS control plane which is “DWDM aware”:

– GMPLS “NNI” –

communication between NNI nodes

– LSP are wavelength,

– the control plane is aware of optical impairments

WSON enables lambda setup on the fly

WSON enables lambda re-routing

WSON enables a lambda revalidation against a failure reparation

Cisco WSON Parameters Foundation for Multi-Layer Information Exchange

Linear Impairments

– Power Loss

– Chromatic Dispersion (CD)

– Polarization Mode Dispersion (PMD)

– Optical Signal to Noise Ratio (OSNR))

Non linear Optical impairments:

– Self-Phase Modulation (SPM)

– Cross-Phase Modulation (XPM)

– Four-Wave Mixing (FWM)

Topology

Lambda assignment

Route choices (C-SPF)

Interface Characteristics

Bit rate

Modulation format

Regeneration Capability

Wavelength Switched Optical Network Auto Restoration

ONS 15454

Vienna

Frankfurt

ONS 15454

Vienna

Frankfurt

Fiber Cut!

ONS 15454

Vienna

Frankfurt

Embedded WSON intelligence locates and verifies a new path

• If rapid failure detection and recovery is needed it is

assumed that existing packet IP/ MPLS mechanisms

(e.g., BFD, IP-FRR, TE-FRR,LDP-FRR, mLDP-FRR,

fast convergence) will be used for protection and

recovery.

• IP+Optical Solutions can use Proactive Protection

• Protected services (Y-cable, PSM, FiberSwitch) could

be used for valuable traffic to provide rapid protection

at the optical layer.

• Restoration is Best Effort.

Restoration is Slower than Protection

What if we Integrate IP Control Plane with WSON?

Reduce Optical Circuit Turn Up Time

On Demand Bandwidth Provisioning

Constrained Circuit Request to Avoid Shared Risk

Alarm Correlation

Network Optimization

Multi-Layer Control Plane Peer Model

Single

Domain Fully Integrated Control Plane

- No Respect for Administrative Boundaries

-Does not take advantage of operational expertise

- Scale of Routing Topology

- Memory requirements for every platform

- Path computation loads across entire network

- Does not take advantage of operational

expertise

- Impact on Maintenance and Software Deployment

- Software Testing and upgrade span entire network

-slows certification cycles

Multi-Layer Control Plane Overlay Model is Efficient and Scales

Separate Control Planes per Layer with

signaling between

- Respects Boundaries

- Scales

- Operational Expertise

- Faster Testing/Provisioning

Domain

Routing

Domain

GMPLS – User Network Interface

User-Network Interface (UNI) to implement an overlay model

between two networks – with limited communication between them

Enables a Cisco router to signal paths dynamically through a DWDM network

Paths may be signaled with diversity requirements

Building block for multi-layer routing

H E L L O my name is

I IPP H E L L O

my name is

Optical

WSON and IP Control Plane Communicate via GMPLS UNI

UNI WSON

NCS2000

Milan Rome

Provisioning using GMPLS UNI Example Constrained Circuit Request

1. Operator requests a circuit between Source and Destination Router Interfaces using

Milan Rome MIL-

NCS2000

Ingress

NCS2000

Egress

Milan Rome MIL-

NCS2000

Ingress

NCS2000

Egress

2. Using GMPLS UNI, Head UNI-C signals UNI-N System requesting path to Destination

Milan Rome MIL-

NCS2000

Ingress

NCS2000

Egress

3. UNI-N Initiates WSON (C-SPF), and finds best path based on diversity requirements

Milan Rome MIL-

NCS2000

Ingress

NCS2000

Egress

4. Destination UNI-N node signals Tail UNI-C and requests DWDM interface to be set to

specific wavelength

Milan Rome MIL-

NCS2000

Ingress

NCS2000

Egress

5. Ingress UNI-N signals Head UNI-C to set DWDM Interface to same wavelength

Milan Rome MIL-

NCS2000

Ingress

NCS2000

Egress

6. Router Interfaces come up, IGP Adjacencies Formed, traffic begins flowing

Int Hun0/0/0/0 up/up

ISIS nei relationship

Some Inefficiencies in Layer 2/3 Network

Impacts SLA

– downtime, latency, loss, predictability of service

Impacts bottom-line

– SLA penalty, unoptimized capacity, support complexity

LFA/TE FRR Fate-

Sharing from primary

Disjointness

for PoP

Homogenous

Latency and

Fate sharing

Bundle

Basis for nLight Control Plane

The solution to these problems are simple

If the client layer knows basic information from the server layer: SRLG, latency…

To-date, this information is invisible to the client layer We need to allow for information sharing between Client and Server

GMPLS UNI

GMPLS UNI Extensions

Multilayer Control Plane - nLight

GMPLS UNI extension to include SRLG and Coordinated maintenance functionality

GMPLS UNI extension to support next generation of Multi-rate/Multi-Modulation/Multicarrier HS Optics

Automatic Bandwidth service from MPLS CP and WSON CP will be the end goal to deploy a true Multi-Layer Network

Integration of an L1/L3 awareness in a Network Planner Prime module

Information Flowing through nLight with GMPLS UNI

When signalling a circuit, a client may request

– server SRLG’s to be excluded or included

– the path to follow another Circuit-ID

– the path to be disjoint from another Circuit-ID

– an optimization upon shortest latency

– a bound on latency not to exceed

– an optimization upon lowest optical cost

– optical restoration

– optical re-optimization

Information Flowing through nLight

For each circuit it signals, a client may be informed of

– Circuit-ID – unique identifier in server context

– SRLG’s along the circuit

– Latency through the server network

– Path through the server network

Information continuously refreshed

A client may be informed of server

topology/resource

Policy Controlled by the Server Layer

nLight Control Plane Resolves the Inefficiencies

Efficient IP/MPLS FRR

– thanks to SRLG discovery

Enforcement of disjointess or same-path requirements

– thanks to SRLG/Circuit-ID disjointness

Efficient diagnostics

– latency discovery

Efficient operation

– multi-layer maintenance coordination

Putting it Together Example GMPLS UNI with Diverse LSP, WSON, and IPoDWDM Proactive Protection

Milan Brussels

London

Optical network

Need new circuit from Milan

To Brussels

Traffic Flow

Milan<->Brussels

London

Optical network

GMPLS UNI brings up new circuit

To Brussels using LSP diversity

IGP sees direct connection Milan<->Brussels

Traffic Flow

Milan<->Brussels

Other IP traffic

Milan Brussels

London

Optical network

Fiber Cut!

Traffic Flow

Milan<->Brussels

Other IP traffic

Milan Brussels

London

Optical network

IGP nei relationship to Brussels breaks

Proactive Protection kicks in, high

Priority traffic re-routed through London

Traffic Flow

Milan<->Brussels

Other IP traffic

Milan Brussels

London

Optical network

GMPLS UNI/WSON begins to

re-route circuit

Traffic Flow

Milan<->Brussels

Other IP traffic

Milan Brussels

London

Optical network

New Circuit built to Brussels, LSP diverse

Proactive Protection Reverts

IGP forms neighbor relationship again

Traffic Flow

Milan<->Brussels

Other IP traffic

Milan Brussels

London

Optical network

Traffic re-routes original L3 path

Re-uses SAME IPoDWDM Interface!

Optically, takes a different Route

Traffic Flow

Milan<->Brussels

Other IP traffic

Milan Brussels

London

Optical network

If revert is configured, when

Fiber cut fixed, will revert to original

Path (Configured in MSTP)

Traffic Flow

Milan<->Brussels

Other IP traffic

Milan Orlando

Restoration for Optical Failures example

BB1 BB2 Premium: 30G

BE: 90G

3x 100G Worst-case stable:

120G on 300G

Avg IP util: 120/300= 47%%

BB1 BB2 Premium: 30G

BE: 90G

Worst-case transient:

120G on 200G. BE loss

Avg IP util: 120/200= 60%=

Worst-case stable:

120G on 100G: possible BE

loss= 60%

In a real SP network: 10-34% less interfaces (less router ports, less transponders, less wavelengths, less power, more scale)

2x 100G

What is Multi Layer Restoration (MLR) Concept?

Three Types:

MLR–O: Multilayer Restoration From Optical Failure

- allows the router to negotiate with the optical layer on which contraints

it cares about

MLR-P: Multilayer Restoration from Port Failure

- allows the router to change the port that originates the circuit

MLR-A: Multilayer Restoration from IP Aggregation Node Failure

- allows the router to change the destination node

Where are we going? Multilayer Optimization

Applications

Network

Devices

with on-box

Control

Hybrid Control plane:

Distributed control combined with

central control (through Controllers)

for optimized behavior (e.g. optimized

performance) Fully Distributed Control Plane:

Optimized for reliability

Network

Middleware

“Controllers”

Centralize when needed, default distributed network for all else

Multilayer Network Optimization Architecture

Impairment aware WSON

GMPLS-UNI

Multi-Layer Information sharing &

Automation

Multi-Layer Restoration Link (fiber),

Port, & Node failures

Coordinated optical path maintenance

& optimization

Application aware

Multi-Layer Optimization

PCE-based

WDM planning

tool (CTP)

Automation Optimization

Network Architectures with Network Convergence System

Improving Link and System Utilization

Lambda Utilization

– In today’s model, the DWDM layer is the convergence layer

– DWDM is trending to the highest cost component of the network

– Increasing fill rates on lambdas will be a critical means of reducing cost

– Need to support both circuit and packet abstractions in the same lambda

Multiple functions per shelf increases slot fill rate

Hybrid line cards support carrying diverse service types on a single lambda

Hybrid Fabrics allowing fabric sharing for circuit and packet switching

nLight optimization allows increased utilization on links and eliminates need for multi-layer protection bandwidth

Layer Convergence Concept

Eliminate a box per function in the network – Collapse OTN, DWDM and IP/MPLS into a single node

– Collapse peering, core, lean core and edge into a single node

Following functions available as line cards in NCS systems – Transponder, OTN Switching, IP/MPLS, Core, Edge, Peering

Optimize traffic flow with layer integration –

Any service anywhere lowers the barriers to new service adoption and turn up

NCS6000

Aggregation

Core/Metro DWDM Transport

NCS4000

Transport

NCS4000

Optical

Interconnect

Optical Interconnect Optical Interconnect

NCS2000

NCS4000

NCS Series Network Design

NCS6000

Aggregation

Core/Metro DWDM Transport

NCS4000

Transport NCS6000

Optical

Interconnect

Optical Interconnect Optical Interconnect

NCS2000

NCS4000

NCS Series Network Design

NCS4000 NCS2000

NCS Network across Core and Metro

Utiliy

λ Services

Core Metro/Regional

OTN NCS4000

NCS6000 ASR9K

NCS2000

GE/Legacy/Utility Satellite

Carrier Ethernet

Access a

NCS2000

NCS4000 OTN

CONCLUSION

Intelligent Information Exchange Proactive Protection, GMPLS, Control Plane

Packet Layer

(master) DWDM Layer

(slave)

IGP SLA’s

QoS Queuing power levels

CD / PMD

non-linear impairments

physical topology Peering Addressing

nLight

Control Plane

Circuit from A to Z

Proactive Protection Interface Integration

UNI Extensions

Pre-FEC Threshold Crossing

Network Topology & Feasibility

Matching Path

Disjoint Path

SRLG Avoidance

Max Latency

Circuit ID and Path

SRLG database

Path Latencies

Client Requests Server Information

IP+Optical Evolution Data Plane, Control Plane, Management Plane Integration

Touchless ROADM

Flexible Transport

Packet Resource

Optimized for Packet Density

Optical Resource

Optimized for DWDM Interfaces

High Density

Packet Ports

Zero Cost Optical

or Backplane

Interconnect

Unified

Management

Rate Adaptation

L1/2/3 Switching

Adaptive, Multi-Rate

DWDM Optics

Colorless-Omni-Flex

Control Plane

Automation

Low Speed

Breakout

Summary

Packet traffic increasing

IP+Optical decreases expenses while streamlining services

New Architectures enable next generation networks

New ROADM trends to support optical agile networks enabling multilayer control planes

Multilayer control planes add network automation and resiliency which decreases Total Cost of Ownership

Integrating IP+Optical with NCS makes sense!

Related Session

BRKOPT-2101 - WSON and Impact on an IP+Optical ML Control Plane

–Tomorrow (29 Jan) at 9:00am

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Acronyms

ADC Analog Digital Converter

C-SPF Constrained Shortest Path First

CD Chromatic Dispersion

Coherent Polarisation-Mux Differential Quadrature Phase

Shift Keying

DCU Dispersion Compensating Unit

DSP Digital Signal Processing

DWDM Dense Wave Division Multiplexing

ELEAF E-Large Effective Area Fibre

ERO Explicit Route Option

FEC Forward Error Correction

FRR Fast Re-Route

FWM Four Wave Mixing

GMPLS Generalized Multi Protocol Label Switching

IC Integrated Circuit

IEEE Institute of Electronics and Electrical Engineers

IETF Internet Engineeing Task Force

ITU International Telecommunications Union

LFA Loop Free Alternate

LMP Link Management Protocol

LSP Labeled Switch Path

NNI Network-Network Interface

NPU Network Processing Unit

NCS Network Convergence System

OCP Optical Control Plane

OEO Optical – Electrical- Optical

OIF Optical Internetworking Forum

OOK On/Off Keying

OSNR Optical Signal to Noise Ratio

OTN Optical Transport Network

PMD Polarization Mode Dispersion

QAM Quadrature Amplitude Modulation

QPSK Quadrature Phase Shift Keying

ROADM Reprogrammable Optical Add/Drop Multiplexer

Acronyms (Continued)

RSVP Resource Reservation Protocol

SDH Synchronous Digital Hierarchy

SLA Service Level Agreement

Single Mode Fiber

SONET Synchronous Optical Network

SRLG Shared Risk Link Groups

TCO Total Cost of Ownership

TDM Time Division Multiplexed

TE Traffic Engineering

UNI User-Network Interface

WSON Wavelength Switched Optical Network

WXC Wavelength Cross Connect

XPM Cross Phase Modulation

YoY Year over Year

enabling ip+optical networks with ncsd2zmdbbm9feqrf.cloudfront.net/2014/eur/pdf/brkspg-2116.pdf ·...

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