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7
Hub Connections
Depending on what ports your hub has, you can use either
10BASE-T or 10BASE-2 to connect your hubs together:
■
With 10BASE-2 you can connect up to 30 hubs on a
single segment, leaving all of the 10BASE-T ports free.
■
With 10BASE-T you can connect up to four hubs in
series.
10BASE-2
To connect additional hubs using 10BASE-2 (Hub 4C and 8C
only), you need (as shown in Figure 2):
■
One 10BASE-2 50 Ohm cable for each additional hub.
The minimum cable length you can use is 0.5m (1.6ft).
The maximum segment length is 185m (607ft).
■
One 10BASE-2 ‘Y’ piece for each hub. You can use ‘T’
pieces but ‘Y’ pieces provide optimal clearance of the
other ports.
■
Two 10BASE-2 50 Ohm terminators (end pieces).
Figure 2
Some of the 10BASE-2 Equipment You May Need
10BASE-T
If you have additional hubs you want to connect using
10BASE-T, you need:
■
One straight-through TP cable for each extra hub.
Twisted Pair (TP) Cables
To connect your workstations and hubs, you must use
straight-through TP cable with RJ-45 connectors. Cables can
be shielded (screened) or unshielded; we recommend that
you use shielded. The maximum length you can use is 100m
(328ft). A straight-through cable is one where the pins of
one connector are connected to the same pins of the other
connector.
Terminator
(end piece)
‘Y’ piece
or
‘T’ piece
3C16700.book Page 7 Wednesday, July 7, 1999 5:46 PM