3Com manual Making the Connection to Another Hub, Checking Hub Connections, Spot Checks

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

Figure 5 Correct Connections for OfficeConnect Hubs

OfficeConnect

Dual Speed Hub 8

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

OfficeConnect

hub

Switch set to

Uplink (in)

Uplink/Normal

Uplink/Normal

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.

Twisted pair cable

with RJ-45 connectors.

Maximum length is 100m (328ft)

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