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:
• Networking Protocols, Ports, Standards, and Organizations What Does it All Mean?
• Looking at the OSI 7 Layer Reference Model
• IPv6 Neighbor Discovery Protocol (NDP)
• IEEE 802.11.x Wireless Standards
• Wireless Standards - 802.11a 802.11b 802.11g 802.11n 802.11i Explained
• Introducing OpenStack
• The TCP/IP protocol Datagram Format
• Video - Network Layer (Layer 3) of OSI Networking Model
• Classless IP Addressing
• Video - Transport Layer (Layer 4) of OSI Networking Model
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