Making The Connection To Another Hub; Checking Hub Connections; Spot Checks - 3Com Hub User Manual

Making the Connection to Another Hub

You can connect a 10BASE-T, 100BASE-TX, or another
10/100BASE-TX OfficeConnect hub to any port on the Dual
Speed Hub 8. Use the following method:
1 Using a straight-through cable, connect the
Uplink/Normal port of the Dual Speed Hub 8 to any of
the ports on the other hub (as shown in Figure 5). If
using an Uplink/Normal port on the other hub, set its
Uplink/Normal switch to Normal (out).
2 Set the Uplink/Normal switch for the Uplink/Normal port
on the Dual Speed Hub 8 to Uplink (in).

Checking Hub Connections

When you have connected all the appropriate workstations
and other equipment to the Hub, power on the Hub. For
each port with a connection, a Port Status LED should be
on. If the port is operating at 100Mbps, the corresponding
LED in the upper row of Port Status LEDs is on. If the port is
operating at 10Mpbs, the corresponding LED in the lower
row is on. If neither LED is on, check your connections.

Spot Checks

At frequent intervals, visually check that:
The Alert LED is off — this is the best way to find out if
there are problems with your network.
Case vents are not obstructed.
Cabling is secure and not pulled taut.
Figure 5 Correct Connections for OfficeConnect Hubs
OfficeConnect
Dual Speed Hub 8
OfficeConnect
hub
Switch set to
Uplink (in)
Twisted pair cable
with RJ-45 connectors.
Maximum length is 100m (328ft)
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