Nortel BayStack 450-24T Using Manual page 299

Figure 4-2.
Table 4-1.
Label Type
Pwr Power status
Status System status
RPSU RPSU status
Cas Up Stack mode
309978-D Rev 01
450-12F Switch
BayStack
Cas
1 2 3
Pwr Up
Status Dwn
RPSU Base
BayStack 450-12F
BayStack 450-12F LED Display Panel
BayStack 450 Switch LED Descriptions
Color State
Green On
Off
Green On
Blinking A nonfatal error occurred during the self-test.
Off
Green On
Off
Off
Green On
Yellow On
4 5 6 7 8 9 10
Meaning
DC power is available to the switch's internal circuitry.
No AC power to switch, or power supply failed.
Self-test passed successfully and switch is operational.
The switch failed the self-test.
The switch is connected to the HRPSU and can receive
power if needed.
The switch is not connected to the HRPSU or HRPSU is
not supplying power.
The switch is in standalone mode.
The switch is connected to the upstream unit's Cascade A
In connector.
The Cascade A Out connector (Cas Up) for this switch is
looped internally (wrapped to the secondary ring).
Troubleshooting
11 12
Link
F Dx
Activity
BS45080A
(continued)
4-3