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GTS Carrier Services GTS ConfidentialPage 1 - November, 1999
IP over D-WDM
Dense Wave Division Multiplexing
Ebone
a subsidiary of GTS Carrier Services
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GTS Carrier Services GTS ConfidentialPage 3 - November, 1999
The combined company
GTS services as the European Carriers Carrier more than 150
Carriers and ISPs, representing virtually every major segment of
the telecommunications industry
Operating high speed (n*2.5 Gbps), high quality (99,90%)
services
Based on leading edge D-WDM, SDH & IP technologies Multiple network redundancies, no single point of failure
The first operator to use IP over dense wave division multiplexing(IP over D-WDM) on an international network
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GTS Carrier Services GTS ConfidentialPage 4 - November, 1999
GTS Carrier Services Offering
SDH Services
European Point to Point Transmission Capacity
European Ring & V/U link Services
Transatlantic Transmission Capacity
Optical Sub-Network Services (D-WDM)
Managed Gigabit Network Services (Dedicated SDH over D-
WDM)
Ebone Internet Services
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GTS Carrier Services GTS ConfidentialPage 5 - November, 1999
Wavelength Division Multiplexing
fibre
llllmux llll demux
STM
-16
STM
-16
STM-16
STM
-16
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GTS Carrier Services GTS ConfidentialPage 6 - November, 1999
D-WDM as
Global overlay network
WDM NodeSDH Node
SDH
SDH
WDM
WDM
IPIP Lambda
Lambda
IP Node
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GTS Carrier Services GTS ConfidentialPage 7 - November, 1999
IP over D-WDM
IP over D-WDM connects 2.5 Gbps directly as optical interfaces
into the IP routers (Cisco 12000) thus eliminating the need for
SDH equipment.
By going to D-WDM the GTS IP backbone is moving from theMbps environment of SDH (2, 34, 45 and 155 Mbps) and directly
into the Gbps environment, this combined with the non
overbooking policy of GTS allows very fast upgrades of customerconnections.
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GTS Carrier Services GTS ConfidentialPage 8 - November, 1999
Equipment Suppliers
Cienna
D-WDM equipment
Cisco
POS (packet over Sonet) cards
CISCO 12000 & 7200 Routers
Alcatel
Only for SDH - not used for IP over D-WDM
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GTS Carrier Services GTS ConfidentialPage 10 - November, 1999
Early deployment IP/WDM
London
Brussels
Paris
Geneva
Frankfurt
Copenhagen
Stockholm
STM-16 directly over fiber
STM-1
Amsterdam
Ebone PoP
HER PoP
HERNOC
Hoeilaart (Brussels)
HER Headq.
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GTS Carrier Services GTS ConfidentialPage 11 - November, 1999
PoP architecture
Redundant core network
Back-to-back redundant STM-1s between access- and core routers
STM-1 and T3 connections on Cisco 12000 routers
E1 and E3 connections on Cisco 7200 routers
STM-16
STM-1
T3
STM-16
E3
Customer access
12012 12012
7206VXR
E1
STM-1
STM-16
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GTS Carrier Services GTS ConfidentialPage 12 - November, 1999
IP over D-WDM QoS
Provide QoS by capacity
management:0% packet-loss
lowest possible latency
Protection done at IP layer
Latency:Latency: propagation delay 5ms per 1000km one way delaypropagation delay 5ms per 1000km one way delay
serialization delay 0.01 ms for 1500 byte packetsserialization delay 0.01 ms for 1500 byte packets
queueing delay depends on network dimensioningqueueing delay depends on network dimensioning
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GTS Carrier Services GTS ConfidentialPage 13 - November, 1999
Planned Network
end of year 2000
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GTS Carrier Services GTS ConfidentialPage 14 - November, 1999
Flag Atlantic 1 FA-1
l 50:50 joint venture with FLAG Telecom
l 1st
terabit transatlantic dual cable system
l Three loop system providing highest resiliency
l Directly linking New York to London and Paris and all cities on
l the GTS network
l Marine construction awarded to Alcatel Submarine Networks
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GTS Carrier Services GTS ConfidentialPage 15 - November, 1999
FA-1 Three loop system
TransAtlantic(Subsea System)Land
based
links
Long Island
New York-1
New York-2
FA-1
SystemBackhaulUSAUSA
Porthcuno
St. Brieuc
Sea
based
links
London
Paris
GTS CSGTS CS
PanPan--EuropeanEuropeanNetworkNetwork
FA-1 System
Backhaul
Long Island
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GTS Carrier Services GTS ConfidentialPage 16 - November, 1999
WDM pass-thru
A router at every WDM terminal site is expensive
Connect wavelengths on different spans to create WDM circuit
between two routers.
Frankfurt Stuttgart Munich
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GTS Carrier Services GTS ConfidentialPage 17 - November, 1999
GTS network strategy: IP
Use IP/WDM for maximum capacity & flexibility
Reduce network complexity by reducing equipment
Use IP/WDM overlay for traffic engineering
Use IPsec for IP VPNs
Provide QoS by capacity management
0% packet-loss
lowest possible latency
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GTS Carrier Services GTS ConfidentialPage 18 - November, 1999
The need for speed!
IP/WDM links
2000: 10 Gbit/s
2002: 40Gbit/s
98 99 00 01 02
40Gb
10Gb
2.4Gb155Mb
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GTS Carrier Services GTS ConfidentialPage 19 - November, 1999
Throttling customer connections
Goal: allow flexible capacity upgrades
Over-dimension access circuit, implement upgrades when required.
Supported at E3/T3 speeds with Cisco equipment. Also required for STM-1 and
STM-4
Customer access link example
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GTS Carrier Services GTS ConfidentialPage 20 - November, 1999
Traffic engineering
Goal: allow flexibility if there is a WDM wavelength shortage
Solution: IP/WDM pass-thru
London Frankfurt
Paris
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GTS Carrier Services GTS ConfidentialPage 21 - November, 1999
Benefits of D-WDM
D-WDM offers GTS the ability to provide high bandwidth for IP aswell as other services utilizing existing fiber and by adding a limited
number of new fiber paths expanding the network.
IP over DWDM saves the use of SDH equipment and multiplexing
D-WDM allows GTS to remain on the forefront as the Carriers
Carrier
D-WDM allows GTS to do fast high bandwidth reengineering if the
need for high bandwidth increases in a location.
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GTS Carrier Services GTS ConfidentialPage 22 - November, 1999
Thank you
Jan Guldborg
Phone: +45 39 15 08 08
Mobile:+45 40 88 85 48