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:
• What Is Fabric Networking?
• TCP/IP Features
• IPv6 Address Format
• OSI Transport Layer
• Network Gateways
• IPv6 Address Types and Scopes
• What is PPP, PPPoA and PPPoE?
• IP Addressing and Subnetting
• Major Protocols in the TCP/IP Suite
• Classless IP Addressing
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