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High-Capacity Transmission Network (DWDM)

High-Capacity Transmission Network (DWDM). By Robert Danon. LAN. Today’s typical Enterprise Network. MAN/WAN. Other Sites. Core Network. Access. Metro. End User Access Metro Core. 64kbit/s 2Mbit/s 34Mbit/s. STM-64/10Gbit/s DWDM n x l. Ethernet LAN. STM-4 STM-16. IP/DATA.

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High-Capacity Transmission Network (DWDM)

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  1. High-Capacity Transmission Network (DWDM) By Robert Danon

  2. LAN Today’s typical Enterprise Network MAN/WAN

  3. Other Sites Core Network Access Metro End User Access Metro Core 64kbit/s 2Mbit/s 34Mbit/s STM-64/10Gbit/s DWDM n x l Ethernet LAN STM-4 STM-16 IP/DATA IP/DATA TDM/FR/ATM

  4. Network Challenges of Today’s Telecom Networks 1. Constant increasing demand for Bandwidth Capacity to provide the services required by customers • No bottlenecks (same performance in the WAN as in the LAN)

  5. Challenges of Today’s Telecom Networks • Enterprise Customers: • Use of High Bandwidth Capacities for: • Manufacturing applications; • Large file transfers; • Multimedia (videoconferencing, image/video broadcasting,..); • Internet/Intranet applications; • Storage Area Networks; • Interconnections between different offices (Centralization of the services); • Service Providers • High-Capacity trunking services between facilities: • Central & Regional Offices • Hosting Centers • POP’s,…...

  6. Challenges of Today’sTelecomNetworks 2. Deploying & Integrating diverse Transport Technologies in one physical structure • Transport technologies: • Ethernet (10/100/Giga) • SDH, ATM, FR • ESCON, FICON, Fibre Channel,

  7. How to provide more Bandwidth Capacity? 1. Use/Lay more fiber links & Transmission Equipment • Use of traditional TDM Transport Technologies (ex. SDH) Total available Bandwidth remains limited to the Capacity of the Network Equipments of the Backbone (ex. STM-16) • Data transmission achieved by means of a single beam of white light • As maximum capacity is reached, need to “light” another beam on another fiber link • Expensive solution

  8. How to provide more Bandwidth Capacity? (2)

  9. How to provide more Bandwidth Capacity? (3) 2. Upgrade to Higher-Speed TDM Network Equipments • Simple extension of the Backbone Capacity: • 2,5 Gbps (STM-16) to 10 Gbps (STM-64) • 40 Gbps ??? (Next step in SDH Hierarchy) • Total available Bandwidth remains limited to the Capacity of the Network Equipments. • Data transmission achieved by means of a single beam of white light • As maximum capacity is reached, need to “light” another beam on another fiber link • Expensive Solution

  10. How to provide more Bandwidth Capacity? (4) • DENSE WAVE DIVISION MULTIPLEXING • Fiber-Optic Transmission Technique using light wavelengths to transmit Data Flows

  11. DWDM Principle: • Split the same beam of white light by frequency (colors) into separate wavelengths; • Assign incoming signals to a specific “lambda”(Color) • Multiplex the result on a single fiber link

  12. DWDM (2) • Each resulting wavelength can be considered as a “Virtual Fiber Link” and is totally independent from the others. • Each Lambda is provisioned & controlled by a frequency-specific laser: • Each lambda can carry the same total amount of data (2,5/10 Gbps)

  13. ATM Optical Fibre Gigabit Ethernet Fibre Channel ESCON DWDM (3) • Each lambda is Protocol Independent (bit-rate & format)

  14. DWDM (4)

  15. DWDM: Advantages • Scalability: • “Grow-as-you-go” Infrastructure • DWDM infrastructure is designed to provide a graceful network evolution for service providers • Huge Bandwidth Capability • Transport Capacity of one Lambda is at least 2.5 Gbps • Flexibility: • Capacity can be expanded in any portion of the network (no other technology can offer this) • Versatility: • Only mean for service providers to integrate the existing diverse transport technologies into one physical infrastructure

  16. DWDM : Advantages (2) Enterprise Network Ethernet TDM Circuits Frame Relay IP VPN ATM SDH Network Services Optical Services (DWDM) Fiber

  17. DWDM: Advantages (3) Network • More efficient use of the intrinsic capacity of the fiber network • Less equipment investments • Bottlenecks suppression • Same performance in the WAN as in the LAN

  18. DWDM: Advantages • Possibility to lease individual wavelengths to High-Use Customers • Possibility for centralization of IT Infrastructure, applications and services: • Servers (E-mail, Office, Data Bases,….) • Internet (costs, protections/firewalls,….) • Application Development • Disaster Recovery Strategy • Dedicated High-Speed Trunks toward DR Centers • Better Cost Control

  19. DWDM: Services • Basic Level: Unprotected Point-to-Point Connection • 2.5 or 10 Gbps • Customers keep the choice to maintain & manage the NTE’s • Level 2: Protected Services • Geographical protection through diverse-routed fiber connections between 2 service points • Customers keep the choice to maintain & manage the NTE’s • Level 3: Managed Wavelength Services • The Service Provider manages the DWDM connection and the NTE’s on either end • Level 4: Custom Build Wavelength Services • Includes managed network services & a managed wavelength transport solution to run multiple protocols

  20. International Backbone • B-TELECOM • 3500 km Fibre-Optic Infrastructure along the railway lines • National Coverage • Installed cables up-to borders of all adjacent countries • Belgium = Crossroad • Easy interconnects country-to-country with foreign local operators • Possibility to extend our Backbone Network outside Belgium • 2 Countries connected today: • Luxemburg • France

  21. B-Telecom Fiber Backbone

  22. Our DWDM proposal towards Luxembourg Origin: • Few active players on the B - L axis • Demands for high-bandwidth transmission capacity from entreprises operating in sectors as: • TV Broadcasting • Operators / ISP • IT • Finance • Limited fibre infrastructure for commercial purposes

  23. Our Service proposal towards Luxembourg Partners: • P&T Lux Transmission Services • Cegecom Transmission Services • e-BRC Collocation & Disaster Recovery

  24. Our proposal towards Luxembourg P&T Lux: • National Coverage • Redundant Physical interconnect • 2 routes: • BRU - LV - LG - GOUVY - LUX • BRU - NAM- ARL- ATHUS - LUX • 2 active Rings today • SDH STM-16 • DWDM • Voice, Data, Internet

  25. Our proposal towards Luxembourg Cegecom: • National Backbone • Physical interconnect • 2 routes: • BRU - LV - LG - GOUVY - LUX (e-BRC) • BRU - NAM- ARL- ATHUS - LUX • 1 active Ring today • SDH • Voice, Data, Internet

  26. Our proposal towards Luxembourg E-BRC: • Co-location Services • Disaster Recovery Solutions

  27. Antwerpen Gent Hasselt Leuven Brussels Kortrijk Liège Mons Gouvy Charleroi Ciney Ringterminal (80 ch.) OADM (4 ch.) Optical Amplifier Dark Fiber (one pair) Arlon Luxembourg BeLux DWDM Network Implementation

  28. Antwerpen 64 Gent 48 Hasselt Leuven 54 43 33 Brussels 6 53 6 89 Kortrijk Liège 65 Namur Mons 60 41 36 Gouvy Charleroi Ciney Ringterminal, 80 ch, full add-drop OADM,  20 ch add-drop capacity Luxembourg Dark Fiber (one pair) Arlon National DWDM Network Implementation

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