April 2008
Intermediate to advanced
544 pages
17h 17m
English
book
Network Infrastructure and Architecture: Designing High-Availability Networks
by Krzysztof Iniewski, Daniel Minoli, Carl McCrosky
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13
NETWORK DESIGN: EFFICIENT, SURVIVABLE NETWORKS
13.3 Optical Transport Network
13.3.1 Motivations, Goals, and Approaches
13.3.3 Basic OTN Technical Concepts
13.4 Automatically Switched Optical Networks
13.4.2 Standardization Efforts
13.4.3 Architectural Principles for ASON
13.1 INTRODUCTION
Organizations have become highly dependent on their network infrastructure. As early as the mid-1990s it was recognized that “… we have reached a state where ‘the corporation is the network.’ Hence, the entire business viability of a corporation may well depend on the network it has in place …” (Minoli and Alles, 1996). One need only think of the importance of the network to a bank, a brokerage firm, an online business such as reservations or e-commerce, the aviation industry, or the military, to name just a few examples. It follows that organizations seek to have networks with high availability and self-healing capabilities. Requirements for availability in the 99.999% range are common for many institutional networks. Carriers and service providers need to deploy network infrastructures that meet these end-user needs. A properly designed carrier network will achieve high availability. Such a network will make full use of the network elements (NEs) and advanced technologies discussed in earlier chapters. ...
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