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 100wm 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 100wm
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 variable speed. The
Viptela software maintains the fan at an optimal fan speed, raising the speed as the ambient temperature
increases and decreasing the speed as the temperature decreases, to keep the router operating at the lowest
possible temperature in the green temperature threshold. 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 (normal) applies.
Table 8:
Red
Alarm (ºC)
Yellow
Alarm (ºC)
Item
Bad Fan
Normal
Bad Fan
Normal
85
90
70
75
Board sensor 0
90
95
75
80
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.
To view temperature thresholds at which green, yellow, and red alarms are generated, enter the
show hardware
temperature-thresholds
command at the system prompt. The system displays the alarm temperature threshold
information for a specific board or all boards in the router and for the router's CPU.
vEdge 100wm Router
26
vEdge 100wm Router
Maintenance and Troubleshooting