No light may indicate a connection problem. For a twist-on cable, unplug the cable and gently twist it clockwise to tighten. For a crimp-on cable, gently tug at the connection. Reconnect to the hub and notice any change in the status of the light. Academic Computing should then be called and informed of the status of the hub.
Network appears to be unsteady.
Give the user an updated LAN boot diskette. If the new boot disk does not fix the problem, immediately check the machine running ARC Monitor in the Hardware Center. A persistent beeping noise indicates a problem. Most likely, the problem is caused by two conflicting addresses on the network. Check the status of reconfigs on the monitor.