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:
• IPv6 Address Format
• Network Switches
• A Simple Description of the IPv6 Header and Datagram
• TCP/IP Protocol Suite
• Network Routing Protocols - IGRP, EIGRP, OSPF, ISIS, BGP
• IEEE 802.11.x Wireless Standards
• The OSI Physical Layer
• Video - Introducing the OSI Model
• VTP (VLAN Trunking Protocol)
• Routing Datagrams
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