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Unit 5: Networking Devices
It consists of a single box with multiple ports. Each port is connected with a separate computer. Notes
A signal transmitted by a computer travels to all ports like a bus topology. With the evolution
of bridge technology, a data packet input to one port is first checked for its destination and is
outputted accordingly to the respective port. In this manner multiple port can communicate
simultaneously with one another using switch.
It can be said, in other words, that a switching hub has multiple buses for multiple LANs as
shown in Figure 5.11. The configuration of a switch is shown in Figure 5.12.
Figure 5.11: Switching Hub with Multiple Buses
10 Mbps
10 Mbps
Figure 5.12: Configuration of a Switch
Figure 9.15 Switching hub with multiple buses
Ports
Figure 9.16 Switch configuration
The switching hub interprets the MAC address of the destination computer contained in the data
packet and sends the data packet to the appropriate destination computer using appropriate port
when hub uses the technique of repeater in doing so. Therefore, switching hub is treated as bridge.
Characteristics of Switching Hub
A switching hub can operate with multiple media (coaxial cable, UTP, and fiber).
It can work with different technologies with different speeds.
It provides routing capabilities too.
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