3Com 3C16751A 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 16. Use the following method:

1Using a straight-through cable, connect the Uplink/Normal port of the Dual Speed Hub 16 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).

2Set the Uplink/Normal switch for the Uplink/Normal port on the Dual Speed Hub 16 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 Hub16

Uplink/Normal

OfficeConnect

hub

Switch set to

Uplink (in)

Uplink/Normal

Twisted pair cable

with RJ-45 connectors.

Maximum length is 100m (328ft)

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