Determining the Operating Status
Status LEDs
Beta Draft Confidential
CBX 500 Multiservice WAN Switch Hardware Installation Guide 4/5/035-3
Module Status LEDs
Each IOP module and the SP module have Good and Failed status LEDs that show the
operating condition of the module.
Port Alarm LEDs
The IOPs also have port-specific LEDs that indicate three possible alarm conditions.
Table 5-2. Module Status LEDs
LED Condition Indicates
Good (Green) ON The module is fully operational; no errors have been detected.
Failed (Red) ON The module detected an operational error condition. Contact
the TAC for assistance.
Good and Failed
BLINKING
The OS software image is currently being downloaded to the
module from the active SP. This is not an error condition.
Table 5-3. Port Alarm LEDs
LED Condition Indicates
Yellow Alarm ON A loss of signal has been detected at downstream equipment
on the circuit for the indicated port.
Red Alarm BLINKING
(also called a Blue Alarm)
A downstream equipment failure has been detected on the
circuit for the indicated port.
Red Alarm ON A loss of signal has occurred on the port.
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