LED and Network Verification
4-17
LED and Network
Verification
This section provides information on LED and Network verification
information for the media module. The following topics are discussed:
■
Using the CoreBuilder 5000 Controller Module to Verify LED
Operation
■
Using the DMM to Verify Network Connections
For more information on the DMM, refer to the
Distributed
Management Module User Guide
.
Using the
CoreBuilder 5000
Controller Module
to Verify LED
Operation
The CoreBuilder 5000 hub's controller module is equipped with an LED
Test button on the front panel. Use the LED Test button to verify LED
operation. When you press this button, the module initiates a test to all
modules in the hub. All LEDs should respond by lighting continuously
for approximately five seconds. Any LED that does not light is defective.
This test does not disrupt network operation.
Table 4-3
Media Module LED Interpretation
LED Name
Color
State
Indicates
Module Status
Green
OFF
No power.
Blinking
Module failed self diagnostics.
ON
Module powered up OK.
Ring-In/
Ring-Out
(RI/RO) LEDs
Green
OFF
Trunk disabled.
ON
Trunk enabled and operating.
Blinking
Trunk enabled, but not operating.
Port Status
Green
ON
Port enabled, phantom detected, port
enabled onto ring, status OK.
1 blink
Port enabled, no phantom.
OFF
Port disabled.
Jitter
Attenuator
Card (JA, JA1,
JA2)
Green
OFF
Card not installed.
ON
Card installed and operating normally.
RI/RO (ATPP,
ATP)
Green
OFF
Ports 17 and 18 are lobe ports.
ON
Ports 17 and 18 Trunk (RI/RO) ports.
