Intel Express 100BASE-T4 - Manual (Page 28)

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A P P E N D I X A Intel Express 100BASE-T4 Stackable Hub
Network Topology Extensions
You can extend the network topology by connecting Express
Stackable Hubs to a switching hub.
In the illustration below, the network topology is extended to a
maximum of 400 meters (1312 feet). In this network, a switching hub
interconnects two separate repeater stacks to form two separate
collision domains. Since each UTP cable, from workstation to
repeater and repeater to switch, does not exceed 100 meters (328
feet), the collision domains do not exceed 200 meters (656 feet) in
diameter. Integrating the switch into the network to form two collision
domains of 200 meters each extends the network topology to 400
meters.