foundation, the details of interconnection network functionality and architectural
principles can further be developed.
The technological toolbox used for OINs borrows heavily from that for long-
haul networks, but some elements are used in unconventional ways, and it is
important to understand the differences. Most significant among these is the
maximization of channel bandwidth through multiple-wavelength transmission
schemes. The structure of network subsys tems and componentry is discussed in
some detail, while keeping in mind the requirements of OINs in advanced comput-
ing systems applications. Technology-specific design considerations such as power
consumption, system cost, robustness, and flexibility are examined as well.
We then consider