12.4 NETWORK PROTOCOLS I: ISO/OSI PROTOCOL UNIFICATION
In Chapter 13, we show how various data storage interfaces use protocol stacks. The SCSI-3 Architecture Model is one of these. In general, protocol stacks make all kinds of interfaces portable, maintainable, and easy to describe. The most important and comprehensive of these is the ISO/OSI (International Organization for Standardization/Open Systems Interconnect) protocol stack, which is the theoretical model for many storage and data communication interfaces and protocols. Although each protocol differs in implementation details, the general idea is the same: Each layer of the protocol interfaces only with layers adjacent to itself. No layer skipping is allowed. Protocol conversations take ...
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