Specifications

RADring
Installation & Operation Manual Operation
3/11/98 12:28 Diagnostics and Troubleshooting 4-5
Each module has PWR, HNG and PORT LEDs. The common set of LED port
conditions utilized by the Ethernet modules are presented in Table 4-4.
Table 4-4 Ethernet modules LED port Conditions
LED Port Condition Meaning
Continuously ON Station inserted into the LAN
Continuously OFF No station is connected to the port
Blinking Port is autopartitioned or disabled by
network management
The AUI port in the Ethernet modules has two LED indicators:
STAT - blinks whenever the port is autopartitioned or disabled by the
network management.
PWR - is ON when the 12V power source is activated, OFF when the AUI
power line is shut down by the network management and blinks when the
AUI power line is overloaded.
Diagnostics
Port LED does not light
•
Check if the station is active
•
Check the cable connectors between the station and the port
•
Check that the appropriate type of cable is used: Straight for hub to
station connection and crossover for hub to hub connection.
Port LED Blinks
•
If MNG LED is ON then the port is disabled. Otherwise the port is
autopartitioned.
•
Check management station to detect any events that could indicate a
reason for the port to be disabled.
•
If the port is autopartitioned check that no loops were done during
installation.