To set the
temperature thresholds at which the Performance Routing Engine (PRE) module
generates a critical, major, or minor alarm to warn of potential equipment
damage, use the
facility-alarm
command in global configuration mode. To disable the
temperature alarms, use the
no form of
this command.
facility-alarm {core-temperature | intake-temperature} {critical exceed-action shutdown | major [temp] | minor [temp] }
no facility-alarm {core-temperature | intake-temperature} {critical exceed-action shutdown | major [temp] | minor [temp] }
Cisco cBR
Series Converged Broadband Routers
facility-alarm
critical
exceed-action
shutdown
no
facility-alarm
critical
exceed-action
shutdown
Syntax Description
|
core-temperature
|
Specifies the temperature threshold for the temperature sensors near the center
of the PRE module.
|
|
intake-temperature
|
Specifies the temperature threshold for the temperature sensors at the air
intake slots.
|
|
critical
exceed-action
shutdown
|
In
Cisco IOS Release 12.2(11)BC1 and later releases, specifies that a critical
temperature alarm should shut down the router after two minutes. This was the
default behavior in previous releases.
|
|
major
[temp ]
|
Specifies the temperature, in degrees Centigrade, at which the PRE module
generates a major alarm to warn of potential damage from excessive
temperatures.
The
valid range for
temp is 20 to 67 degrees Centigrade, with a
default of 58 for the core temperature threshold and 54 for the
intake-temperature threshold.
|
|
minor [temp ]
|
Specifies the temperature, in degrees Centigrade, at which the PRE module
generates a minor alarm to warn of potential damage from excessive
temperatures.
The
valid range for
temp is 20 to 67 degrees Centigrade, with a
default of 50 for the core temperature threshold and 45 for the
intake-temperature threshold.
|
Command Default
If no specific
temperature is given, that particular facility alarm is reset to its default
value. The default core temperature thresholds are 85 (critical), 58 (major),
and 50 (minor). The default intake-temperature thresholds are 72 (critical), 54
(major), and 45 (minor) degrees Centigrade.
In Cisco IOS
releases previous to Cisco IOS Release 12.2(11)BC1, a critical alarm
automatically shuts down the router after two minutes to prevent temperature
damage. In Cisco IOS Release 12.2(11)BC1 and later, a critical alarm by default
does not shut down the router.
Note
|
The default
temperature thresholds for the critical core and intake temperatures were
changed in Cisco IOS Release 12.2(11)BC1.
|
Command Modes
Global configuration (config)
Command History
|
Release
|
Modification
|
|
12.2(1)XF1
|
This
command was introduced for the Cisco uBR10012 router.
|
|
12.2(11)BC1
|
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.
|
|
12.3BC
|
This
command was integrated into Cisco IOS Release 12.3BC.
|
|
12.2(33)SCA
|
This
command was integrated into Cisco IOS Release 12.2(33)SCA.
|
|
IOS-XE
3.15.OS
|
This
command was implemented on the Cisco cBR Series Converged Broadband Routers.
|
Usage Guidelines
Note
|
The
facility-alarm
core-temperature
critical
and
facility-alarm
intake-temperature
critical commands are available only if the
service
internal
command is defined in the configuration.
|
The PRE module
on the Cisco uBR10012 router contains temperature sensors that monitor the
temperature at the air intake slots and on the PRE 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.
Note
|
A line card
also automatically shuts itself down if the temperature exceeds operational
levels. In 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:
Router# configure terminal
Router(config)# facility-alarm intake-temperature minor 55
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:
Router# configure terminal
Router(config)# service internal
Router(config)# facility-alarm core-temperature critical exceed-action shutdown
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:
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
The following
commands disable major and minor alarms for both the core and intake
temperature thresholds (but critical alarms are still generated):
Router# configure terminal
Router(config)# no facility-alarm core-temperature major
Router(config)# no facility-alarm core-temperature minor
Router(config)# no facility-alarm intake-temperature major
Router(config)# no facility-alarm intake-temperature minor
The following
commands show how to disable critical temperature alarm on Cisco cBR Series
Converged Broadband Routers:
Router# configure terminal
Router(config)# facility-alarm critical exceed-action shutdown
Router(config)#
Router(config)# no facility-alarm critical exceed-action shutdown
Router(config)#
