Dwdm Scalability Vs Sdh

National Security Bureau Advantages of DWDM over SDH Joseph Ho May 17, 2004

Content • Metro Network Trends • Driver for DWDM • Simplicity – One Network • Case Study : National Security Bureau Network

Proprietary & Confidential

Metro Networks Trends Higher Service Rates

Service

Technology SDH

HDTV Fibre Channel (1/2G) STM-16 1G Gigabit Video Ethernet 622 M STM-4 STM-4 ESCON 155 M STM-1 Fast STM-1 100 M Ethernet DS3 FDDI 45 M DS3 DS1 DS3 2.5 G

1.5 M

TDM

ATM

IP

STM-1 STM-4 STM-16 STM-64

Cross Connects

Mainframe ESCON FibreChannel

Routers/IPswitch

STM-1 STM-4 STM-16

ATM Switches STM-1 STM-4 STM-16

HQ Video

Other...

Growing Range of Services

Application Space Growing Optical Interfaces Across Diverse Group of Equipment. NO LONGER JUST SDH! Proprietary & Confidential

STM-1 STM-4 STM-16 G Eth F Eth STM-1 D1 HDTV

Drivers for DWDM Extends the Capacity of Existing Fiber (32 Times)

Universal Optical Interfaces

Accommodates Any Input Rate Between 16 Mbps and 10 Gbps

Scaleable Design

Permits Carriage of Any Protocol Known Today or in the Future

Forecast-Tolerant Architecture Gbe ESCON

Cost Scales Linearly With Capacity

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FDDI

D1

Quickly Adapts to Unforeseen Demand and Changing Interfaces

Simplicity : One Network for NSB Traditional Approach

Wavelength Networking D1 Video

Video

Gigabit Ethernet

FICON

DWDM Optical Network

Mainframe Networking

Async

IP SDH

ESCON SDH STM-1/4/16

•Special Assemblies •Network Overlays

Fibre Channel

•Ubiquitous Networking •Forecast Tolerant

One Network = Simplicity & Reduced Operations Costs Proprietary & Confidential

Case Study – National Security Bureau • DWDM vs. SDH Comparison – traffic scale up • 4 Node Ring • Examine the Shelf Layout and Equipment at Site A as traffic is increased from Day 1 to Day 2 to Day 3

• Note : Incremental hardware is shown in RED

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National Security Bureau Ring DWDM Expansion Site D Site B

Site A Site C

Take a look at the shelf at Site A when traffic is expanded (assume traffic is from Site A to Site C only) Proprietary & Confidential

7 8 9

(Band 1) 4 Channel OMX West 10

O O C C M M A B

11 12

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13 14 15 16 17 18

Filler Card

6

SP

5

Filler Card Filler Card Filler Card

4

Filler Card 2:1 GF SRM Card

3

Filler Card Filler Card Filler Card

2

Filler Card

1

Filler Card Filler Card Filler Card

Slot

2.5G Flex OCLD B1C1 2.5G Flex OCLD B1C1 Filler Card Filler Card

Day 1 : 2xGbE 19 20

(Band 1) 4 Channel OMX East

Total Traffic : 2 Gbs Shelf at Site A

3 4

2.5G Flex OCLD B1C2 2.5G Flex OCLD B1C2

6 8 9

(Band 1) 4 Channel OMX West 10

O O C C M M A B

11 12

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15 16 18

Filler Card

17

SP

14

2:1 GF SRM Card 2:1 GF SRM Card 2:1 GF SRM Card Filler Card

13

Filler Card

Filler Card Filler Card Filler Card

7

Filer Card

Filler Card

5

2.5G Flex OCLD B1C3

2

2.5G Flex OCLD B1C3

1

2.5G Flex OCLD B1C1

Slot

2.5G Flex OCLD B1C1

Day 2 : 4xGbE, 2xFC (1G) 19 20

(Band 1) 4 Channel OMX East

Total Traffic : 6 Gbs Shelf at Site A

2.5G Flex OCLD B1C2 2.5G Flex OCLD B1C2

5 6 7 8

2.5G Flex OCLD B1C4

4

2.5G Flex OCLD B1C4

3

2.5G Flex OCLD B1C3

2

2.5G Flex OCLD B1C3

1

2.5G Flex OCLD B1C1

Slot

2.5G Flex OCLD B1C1

9 14 15 16

Total Traffic : 10.6 Gbs

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2:1 GF SRM Card 2:1 GF SRM Card 2:1 GF SRM Card 4:1 SRM Card

18

Filler Card

17

SP

13

2.5G Flex OTR B2C2

A B

12

2.5G Flex OTR B2C2

O O C C M M

11

2.5G Flex OTR B2C1

10

2.5G Flex OTR B2C1

Day 3 : 4xGbE, 2xFC (1G), 4xSTM1, 2xFC (2G) 19 20

(Band 1) 4 Channel OMX West (Band 1) 4 Channel OMX East

(Band 1) 4 Channel OMX West (Band 1) 4 Channel OMX West

Shelf at Site A

National Security Bureau Ring SDH Expansion Site D Site B

Site A Site C

Take a look at the shelf at Site A when traffic is expanded (assume traffic is from Site A to Site C only) Proprietary & Confidential

Communication Card

2.5G Line Card 2.5G Line Card

Dual  GbE Card

Day One : 2xGbE

Total Traffic : 2Gbs Shelf at Site A Proprietary & Confidential

Communication Card

10G Line Card 10G Line Card

Dual FC (1G) Card

Dual GbE Card Dual GbE Card

Day Two : 4xGbE, 2xFC (1G)

Replace Line Card at ALL site Total Traffic : 6Gbs

Shelf at Site A Proprietary & Confidential

DWDM Filter

Communication Card

2.5G Line Card

2.5G Line Card

Quad port STM1 Card

Communication Card

FC (2G) Card FC (2G) Card

10G Line Card

10G Line Card

Dual Port GbE Dual Port GbE

Dual Port FC (1G)

Day Two : 4xGbE, 2xFC (1G), 4xSTM1, 2xFC (2G)

DWDM Filter

In order to achieve this traffic, DWDM filters and an additional Shelf is required at ALL sites. Total Traffic : 10.6Gbs

Shelf at Site A Proprietary & Confidential

Conclusion • When National Security Bureau increases to higher bandwidth (FC-1G, FC-2G, GbE) or has a mix of different types of traffic, the DWDM solution scales efficiently and at a significantly lesser cost than a SDH solution.

• SDH needs to reserve half the bandwidth for protection

• Forecast Tolerant : as NSB grows their network, the Metro DWDM solution will support all major and standard Optical signals.

• Scalability is simple – insert the blade into the shelf. Proprietary & Confidential