Uplink should be selected only for making a hub-
to-hub connection with a straight cable. When
Uplink is selected at one end of a straight cable,
Uplink must not be selected at other end of that
cable. (If Uplink were selected at both ends of a
straight cable, then the built-in crossovers of the
two connectors would cancel one another, and
the hub-to-hub connection would fail.)
Thus the rule for making a hub-to-hub
connection with twisted-pair cable is as follows:
To make a hub-to-hub connection with a
straight cable, Uplink must be selected at
one end of the cable, and Uplink must not
be selected at the other end of the cable.
To make a hub-to-hub connection with a
cross-over cable, Uplink must not be
selected at either end of the cable.
Thin Coaxial Cable
Connections
To connect the Ethernet Hub to a thin coaxial
cable (10Base2 cable, also known by its wire-
standard name, RG58A/U, and a variety of other
informal names), first twist a BNC T-connector
onto the rear-panel BNC connector of the
Ethernet Hub. Then twist the shell of the cable’s
connector onto either leg of the BNC T.
If the thin coaxial cable continues on to other
nodes, then twist the shell of the continuation
cable onto the remaining leg of the BNC T. If
there is no continuation (the Ethernet Hub is at
the end of the coaxial cable), then it is necessary
