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1.2 Dual-speed Hub Technology
Dual-speed hub is designed to support connections with different speeds
in the same hub. It makes a network planning simpler, especially when
an environment is containing 10Mbps Ethernet and 100Mbps Fast Eth-
ernet technologies. It also allows a smooth migration from an Ethernet
network to a Fast Ethernet network.
A dual-speed hub is actually equipped with one 10Mbps repeater and
one 100Mbps repeater in one hub unit. Each repeater serves one shared
network segment. The repeater receives transmissions from any of its
ports and retransmits them to all its other ports. The TP port of the hub
can auto-sense the speed (10M or 100M) of its connection and switch to
either 10Mbps shared segment or 100Mbps shared segment automati-
cally. The internal design of a dual-speed hub, KF-16M, is illustrated as
follows:
Figure 1-2 Dual-speed Hub Design
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