Cisco SR2016T-NA Reference Manual page 778

facility-alarm
Command History Release
12.2(1)XF1
12.2(11)BC1
Usage Guidelines The PRE1 module on the Cisco uBR10012 router contains temperature sensors that monitor the
temperature at the air intake slots and on the PRE1 module itself. The facility-alarm command
configures the router for the temperature thresholds that will generate a minor, major, or critical alarm,
so as to notify the system operators of the temperature problem before excessive heat can damage the
router or any of its components.
Before Cisco IOS Release 12.2(11)BC1, a critical alarm would also automatically shut down the router
after two minutes. Cisco IOS Release 12.2(11)BC1 made this automatic shutdown a configurable option,
so that the system operators can decide whether or not a critical alarm should power down the router.
As a general rule, do not disable the automatic shutdown of the router unless you have a systems operator
available to immediately respond to any critical temperature alarms, because this could result in system
damage. Typically, the primary reason to disable the automatic shutdown would be if you are replacing
the fan tray assembly and want to ensure that the router does not power down if the procedure takes
longer than expected.
A line card also automatically shuts itself down if the temperature exceeds operational levels. In
Note
addition, the AC and DC PEMs also automatically power down if they exceed their operational
temperature. However, high temperatures could still cause damage to other components if the problem
is not quickly resolved.
Examples
The following example shows how to configure the Cisco uBR10012 router so that it generates a minor
alarm when the intake temperature exceed 55°C:
The following example shows how to configure the Cisco uBR10012 router to automatically shut down
if the high temperature continues for more than two minutes:
The following example shows how to disable the automatic shutdown feature for both the core and intake
temperatures. A critical alarm is still generated when the default critical temperatures are exceeded, but
the router does not automatically shut itself down:
Cisco Broadband Cable Command Reference Guide
4-18
Modification
This command was introduced for the Cisco uBR10012 router.
The critical exceed-action shutdown option was added. In addition, the
default value for the core critical temperature threshold was raised from 57
to 67 degrees Centigrade, and the default value for the intake critical
temperature threshold was raised from 60 to 85 degrees Centigrade.
Router# configure terminal
Router(config)# facility-alarm intake-temperature minor 55
Router(config)#
Router# configure terminal
Router(config)# facility-alarm core-temperature critical exceed-action shutdown
Router(config)#
Router# configure terminal
Router(config)# no facility-alarm core-temperature critical exceed-action shutdown
Router(config)# no facility-alarm intake-temperature critical exceed-action shutdown
Router(config)#
Chapter 4 Commands for the Cisco uBR10012 Router
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