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Dual-Speed Stackable Hubs User’s Guide
Introduction 3
♦ A stack can contain various DFE-916 series models and DFE-2624
and DFE-2616 series models. For SNMP management, DFE-916
and DFE-916x units can be managed through a DFE-2616i/DFE-
2616ix or DFE-2624i/DFE-2624ix master hub.
♦ LED indicators for power, collisions, link, network activity, parti-
tioning status, disable, operating speed (10 or 100Mbps) and
network utilization.
♦ Digital hub ID number front panel display.
♦ Auto-partitioning for network protection.
♦ Data collision detection and handling.
♦ Preamble regeneration, signal retiming.
♦ Two proprietary daisy-chain ports for cascading up to five hubs to
form one logical hub; management capability is provided via a
master hub.
♦ Uplink port allows easy linking of two hub stacks to further expand
your network.
♦ Optional brackets for mounting in standard 19-inch equipment rack.
♦ Internal universal power supply and automatic voltage selection
(100V to 240V, 50 or 60HZ).
♦ Optional slide-in modules: 100BASE-TX, 100BASE-FX (see
Chapter 4 , Making Connections).
Dual-Speed Ethernet Hub
Technology Overview
Dual-speed Ethernet hubs have been developed to make it simpler to plan
networks containing both 10Mbps Ethernet and 100Mbps Fast Ethernet