Dual-Speed Ethernet Hub Technology Overview - TRENDnet TE100-DX16 User Manual

Dual-Speed Ethernet Hub
Technology Overview
Dual-speed Ethernet hubs have been developed to make it simpler
to plan networks containing both 10-Mbps Ethernet and 100-Mbps
Fast Ethernet technologies, especially when network hosts are
being gradually migrated to new Fast Ethernet connections.
A dual-speed hub is actually two repeaters in one housing. The 10-
Mbps repeater receives Ethernet transmissions from any of its
ports, and retransmits them to all other ports operating at 10
Mbps. Similarly, the 100-Mbps repeater retransmits Fast
Ethernet transmissions from ports operating at 100 Mbps to all
other ports operating at the same speed.
100Mbps 100Mbps
Ethernet Ethernet
Station Station
If there is a switching circuit in the hub (or in any hub in a stack),
the switching circuit will serve as a bridge between the two
repeaters.
4
10Mbps Repeater
100Mbps Repeater
NWay Detection
RJ-45 Ports
10Mbps 10Mbps 100Mbps
Ethernet Ethernet Ethernet
Station Station Station
Introduction