Cisco vEdge Series Hardware Installation Manual page 27

vEdge 100 Router
A major alarm condition requires immediate attention. If a temperature related major alarm persists for more
than five minutes, the router will shut down.
• Minor (yellow)—Indicates a warning on the router that, if left unattended, might result in an interruption
in router operation or degradation in router performance. A yellow alarm condition requires further
monitoring and/or maintenance.
Hardware Alarms
Hardware alarms on the vEdge 100 router are predefined and are triggered by a physical condition on the
router such as a power supply failure, excessive component temperature, or fan failure. The vEdge 100 router
triggers the following types of hardware alarms:
• Main board temperature alarm—The main board of the router has one temperature sensing point (board
sensor 0). If the temperature of the sensor location crosses the predefined threshold level, the system
triggers an alarm.
• CPU temperature alarm—If the temperature of the system CPU crosses the predefined threshold level,
the system triggers an alarm.
• Fan alarm—The router has a fixed built-in fan for system cooling which runs at a fixed speed. If the fan
stops running, the system triggers an alarm. Also if the fan starts to run below a predefined RPM threshold,
the system triggers an alarm.
Table 1 lists the yellow and red alarm threshold for the temperature sensing points in the system—one board
sensor on the board and one CPU junction temperature sensor. The lower threshold value (Bad Fan) applies
if a fan failure condition is also detected; otherwise the higher threshold value applies (normal).
Table 7:
Item
Board sensor 0
CPU junction
temperature
Checking Alarms and Notifications
To view the current chassis environment condition , enter the show hardware environment command at
the system prompt. The system displays the power supply status, temperature sensor readings, fan speed, and
related alarm status if any exists.
To view the severity of active alarms, enter the show hardware alarms command at the system prompt. The
system displays the alarm severity and a brief description of the cause of each active alarm.
• One or more hardware components on the router has failed.
• One or more hardware components on the router has exceeded the temperature threshold.
Yellow Alarm(degrees
C)
Normal
65
80
Maintenance and Troubleshooting
Red Alarm(degrees
C)
Bad Fan Normal
60 80
75 95
Hardware Installation Guide for vEdge Routers
Bad Fan
75
90
21