Switched Hubs
• Switched hubs can segment the loop to allow
private conversations between devices:
– Creates multiple “looplets”
– Allows multiple simultaneous conversations
Switched Hub
Switch Matrix
10 9 8 7 6 5 4 3 2 1
R T R T R T R T
A B C D
Nodes
The preceding diagram shows two logical views of a switched hub:
The switch matrix allows loop segmentation, creating “looplets.”
A switched hub supports multiple concurrent “conversations.”
Each of these “conversations” can access the full bandwidth of the link
(up to 4Gb/s).