Download Promising the future: 40G to 100G

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KPN International: Expanding the European information
superhighway to 100G
Key words: 40G, 100G, WDM backbone network
Abstract:
A leading coherent 100G commercial application has enabled KPN International to
further boost its bandwidth and network stability, serving customers even better while
keeping its network on the cutting edge.
Short version:
Challenges/opportunities:
In 2005, KPN decided to migrate its networks to All-IP to facilitate a boom in new
services.
In 2008, KPN landed an order for leasing 40G wavelengths from Amsterdam to
London.
In 2011, bottlenecks occurred in KPN’s networks.
Solutions:
In 2005, KPN built a Europe-wide WDM backbone network with a system
capacity of 40x10G.
In 2008, KPN deployed 40G services spanning the English Channel.
In 2011, KPN rolled out a 100G solution based on ePDM-QPSK coherent
detection technology to upgrade its legacy network.
Benefits:
Coherent 100G satisfied industry demands for bandwidth and stability. KPN’s
European network can now accommodate fast-growing service demands.
Medium version:
KPN International is a fully-integrated business unit of KPN responsible for sales to
enterprise and wholesale customers with international data, IP, and communication service
needs. In 2005, KPN International (hereafter called KPN) built a 10G backbone network
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covering Western Europe. Since then, the operator has grown its network in stages,
upgrading it from 10G to 40G, and then to 100G in 2011.
Leading the market: 10G to 40G
With infrastructure migration imperative, KPN began with transport network
restructuring. In June 2005, KPN signed an exclusive contract with Huawei for CWDM and
DWDM for the access layer and national trunks, respectively, laying a solid basis for
broadband network operation which enabled the operator to further engage in the
international private line, bandwidth wholesale, and IP transit booms.
In the second half of 2005, KPN began its Europe-wide 40 × 10G WDM backbone
network rollout with Huawei as its partner. Over four months, KPN deployed a network of
3,000 km connecting more than twenty major European cities. In this context, the operator
had ample bandwidth to launch and accelerate its international private line, international
voice, VPN, and wavelength services.
In September 2008, KPN secured an order for 40G service between Amsterdam and
London. The 40G network, however, had to span the English Channel, which presented an
enormous challenge. The possibilities for setting up intermediate wavelength regeneration
sites seemed remote, as the channel averages 180 km in width.
Huawei’s diverse experience in 40G deployment won KPN over once again. Both
parties worked to assess KPN’s networks and compare different solutions. Finally, 40G
eDQPSK technology, with its excellent transmission capability and compatibility with KPN’s
existing infrastructure, was finally chosen. Huawei helped KPN upgrade its sites and install
40G service boards. In only three weeks, KPN established a stable 40G transmission link
spanning 214 km of the channel.
Promising the future: 40G to 100G
By early 2011, KPN had been serving customers in 22 European countries through its
WDM backbone network. Service growth, however, had led to bottlenecks, with the
Amsterdam-London link being one of the major choke points, while users of the
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Amsterdam-Luxembourg link were demanding 100G speeds to smoothen their
interactions with content providers and system integrators. After its successful 40G rollout,
KPN expected that a 100G upgrade, based on its platform, would also be possible, with
Huawei’s help.
The cooperation between both parties culminated in a successful upgrade of the
Amsterdam-London and Amsterdam-Luxembourg links; the former extends over 500 km,
including the aforementioned link across the English Channel, and functions without
electrical regeneration, while the latter spans more than 600 km, including the urban fiber.
“KPN International is committed to providing users with reliable, fast and innovative
services. The leading coherent 100G commercial application enables us to secure large
bandwidth and high stability requirements on our network and serve our customers even
better,” said Jasper Snijder, Managing Director of KPN International.
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