Computer Network Switches
By Stephen Bucaro

A bridge or router may be referred to as a "switch" because it uses information in the
data packet to choose a path from one network segment to another. A bridge may be referred to
as a "layer 2 switch" because it uses information from layer 2, the Data Link layer of
the OSI model. A router may be referred to as a "layer 3 switch" because it uses information
from layer 3, the Network layer of the OSI model. A network device that uses a higher layer of
the OSI model may be referred to as a "layer 4 switch", and so on.
More Networking Protocols and Standards: • Internet Protocol versions IPv4, IPv5 and IPv6 • IPv6 Global Unicast Addresses • Virtual Local Area Networks (VLANs) • A Simple Description of the IPv6 Header and Datagram • DSL (Digital Subscriber Line) • IP version 6 (IPv6) Advantages and Implementation • Representation of IPv6 Addresses • The OSI Data Link Layer • Free eBook: Introduction to 802.11 Wireless • T-Carrier - A Complete and Comprehensive Guide
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