Avaya 580 - Manual (Page 24)

xxiv User Guide for the Avaya P580 and P882 Multiservice Switches, v6.1
Preface
Terminology
Throughout this guide, the term layer 2 refers to switching capability. For
example, layer 2 module is a module that provides switching capability.
The term layer 3 refers to the combined ability to switch and route. For
example, layer 3 module is a module that provides both switching and
routing capabilities.
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