Managing the Chassis and Modules
December 2008
© 2008 Foundry Networks, Inc.
5 - 17
For example, if you are changing the temperature thresholds for the management module’s high and medium-high
fans speeds, the Foundry device will accept the following values because the low temperature threshold for the
high speed (67
°
C) is lower than the high temperature threshold (72
°
C) for the medium-high speed.
However, the Foundry device will not accept the following values because the low temperature threshold for the
high speed (73
°
C) is higher than the high temperature threshold (72
°
C) for the medium-high speed.
The <high-threshold> temperature for the high fan speed (speed-4) is the shutdown temperature. If a thermal
plane’s fan-controlled temperature reaches and stays at the shutdown temperature for five minutes, the Foundry
device will automatically shut down to prevent damage.
Displaying Temperature Thresholds for Thermal Planes and Fan Speeds
To check the current settings of the low and high temperature thresholds for thermal planes and fan speeds, enter
the
show chassis
command at any level of the CLI.
The following shows an example of the
show chassis
command output on the FSX. This display shows the
currently configured temperature thresholds for the management module (Rule 1/2) and for all of the interface
modules (Rule 2/2).
Fan Speed
Low Temperature
Threshold
High Temperature
Threshold
High
67
°
C
82
°
C
Medium-high
57
°
C
72
°
C
Fan Speed
Low Temperature
Threshold
High Temperature
Threshold
High
73
°
C
82
°
C
Medium-high
57
°
C
72
°
C
FastIron# show chassis
...
Fan speed switching temperature thresholds:
Rule 1/2 (MGMT CARDS THERMAL PLANE):
Speed 1: NM<----->40 deg-C
Speed 2: 35<----->50 deg-C
Speed 3: 45<----->60 deg-C
Speed 4: 55<----->70 deg-C (shutdown)
Rule 2/2 (LINE CARDS THERMAL PLANE):
Speed 1: NM<----->40 deg-C
Speed 2: 37<----->50 deg-C
Speed 3: 46<----->53 deg-C
Speed 4: 50<----->70 deg-C (shutdown)
...
