Cisco Systems Cisco 12816 Manuale Utente
Chapter 5 Troubleshooting the Installation
Troubleshooting the Processor Subsystem
5-28
Cisco 12016, Cisco 12416, and Cisco 12816 Router Installation and Configuration Guide
OL-11495-01
Figure 5-7
Status LEDs on the Alarm Card
Monitoring Critical, Major, and Minor Alarm Status
The alarms can warn of an overtemperature condition:
•
On a component in the card cage
•
A fan failure in a blower module
•
An overcurrent condition in a power supply
•
An out-of-tolerance voltage on one of the cards
The alarm LEDs are controlled by MBus software, which sets the threshold levels
for triggering the different stages of alarms.
for triggering the different stages of alarms.
The RP continuously polls the system for temperature, voltage, current, and fan
speed values. If a threshold value is exceeded, the RP sets the appropriate alarm
severity level on the alarm card which lights the corresponding LED, and
energizes the appropriate alarm display relays to activate any external audible or
visual alarms wired to the alarm display. The RP also logs a message about the
threshold violation on the system console.
speed values. If a threshold value is exceeded, the RP sets the appropriate alarm
severity level on the alarm card which lights the corresponding LED, and
energizes the appropriate alarm display relays to activate any external audible or
visual alarms wired to the alarm display. The RP also logs a message about the
threshold violation on the system console.
ACO/L
T
ALARM
CSC
0
FAIL
1
0
1
2
ENABLED
ENABLED
FA
IL
CRITICAL
MAJORMINOR
SFC
ALARM
26867
Pin 25
Audio alarm
cutoff switch
Pin 1
Handle
Critical, major, and
minor alarm LEDs
Clock and scheduler card
and switch fabric card LEDs
ENABLED
FAIL
CSC
0
FAIL
1
0
1
2
ENABLED
CRITICAL
MAJORMINOR
SFC