Fast EtherHub-12s User’s Guide
2-6 Installing the System
Verifying Port Status
Check each connection by viewing the port status indicators listed below. (For
a more detailed description of these indicators, refer to Chapter 4.)
Link Indicates that the port has established a valid network connection.
Traffic Indicates traffic traversing the port.
Partition Indicates that the port has been isolated from the hub due to
excessive errors.
If the Link status indicator is not functioning properly, or you experience any
other difficulties in setting up the hub, refer to Appendix A.
Verifying System Operation
Verify that all attached devices have a valid connection. The hub monitors
link status for each port. If any device is properly connected to the hub and
transmitting a link beat signal, the Link indicator lights up for the corresponding
port. If the Link indicator fails to light up when you connect a device to the
hub, check the following items:
• Be sure the twisted-pair cable is properly attached to the connected device
and the hub. Verify that the RJ-45 plug snaps into place when attached.
• See if the twisted-pair cable is functioning properly by using it for another
port and attached device that already displays valid indications when
connected to the network.
• Check the length of the twisted-pair connection to be sure it does not exceed
100 meters. If you are using bit budget calculations to determine maximum
cable lengths, then be sure you have not exceeded the maximum cable length
calculated for any potential node pair.