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Fast Ethernet Stackable Hubs User’s Guide
Making Connections 17
♦ The maximum length of a twisted-pair segment (that
is, the distance between a port in the hub to a single-
address network device such as a PC, server, or
Ethernet switch) is 100 meters. Cabling and other
wiring should be certified as Category 5 UTP or
shielded twisted-pair (STP).
♦ The maximum diameter in a collision domain is about
205 meters using two Class II hubs (or hub stacks).
♦ Between any two end-stations in a collision domain,
there may be up to three cable segments and two
Class II hubs or hub stacks.
Hub to End-Station Connection
After installing the hub properly, it can support up to 24 ports or
16 port end-station connections. Fast Ethernet connections re-
quire either a Category 5 UTP cable or a STP cable. These cables
can be up to 100 meters long.
Each Fast Ethernet connection requires a Category 5 cabling for
all connections, in order to make it easier to transition all stations
to 100Mbps.
You can connect any combination of PCs, servers, and other single-
address network devices to the twisted-pair ports using straight-
through twisted-pair cables. These cables should not be crossed
over. The following figure illustrates the pin assignments for a
straight-through cable: