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[ScreenOS] Example - How to change the value of the temperature threshold for alarm

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Article ID: KB26532 KB Last Updated: 26 Oct 2020Version: 5.0
Summary:

This article provides a procedure to change the threshold value for the CPU temperature alarm.

Note: Temperature alarm threshold values cannot be set for the SSG-5 and SSG-20 Series devices. This is a design limitation.

Symptoms:

Users can see the current temperature and alarm threshold values for the CPU temperature using the get chassis command:

nsisg2000-> get chassis
Chassis Environment:
Power Supply: One power supply is down
Fan Status: Good
CPU Temperature: 95'F (35'C)
Slot Information:
Slot Type         S/N              Assembly-No Version Temperature
0    System Board 0079062000000000 0050-003    F07     75'F (24'C), 82'F (28'C)
4    Management   0252082000000000 0049-004    D19     95'F (35'C)
2    Security     0137092000000000 0067-002    B02     cpu1:N/A , cpu2:N/A
5    ASIC Board   0021512500000000 0050-003    C03
Marin FPGA version 9, Jupiter ASIC version 1, Fresno FPGA version 110
I/O Board
Slot Type          S/N Version      FPGA version
2    8 port 10/100 013900000000000 D03  10
Alarm Control Information:
Power failure audible alarm: disabled
Fan failure audible alarm: disabled
Low battery audible alarm: disabled
Temperature audible alarm: disabled
Normal alarm temperature is 132'F (56'C)
Severe alarm temperature is 150'F (66'C)
nsisg2000->
nsisg2000->

How can users change the threshold value for CPU temperature alarm?

Solution:

Users can change the temperature threshold on ISG Series, NS-5200 and NS-5400 devices as follows:

nsisg2000-> set chassis temperature-threshold alarm celsius 65
The alarm temperature is set to 149'F, 65'C
nsisg2000-> set chassis temperature-threshold severe celsius 75
The severe alarm temperature is set to 167'F, 75'C
nsisg2000->
save

Users can verify the same as follows:

nsisg2000-> get chassis
Chassis Environment:
Power Supply: One power supply is down
Fan Status: Good
CPU Temperature: 95'F ( 35'C)
Slot Information:
Slot Type         S/N              Assembly-No Version Temperature
0    System Board 0079062000000000 0050-003    F07     75'F (24'C), 82'F (28'C)
4    Management   0252082000000000 0049-004    D19     95'F (35'C)
2    Security     0137092000000000 0067-002    B02     cpu1:N/A , cpu2:N/A
5    ASIC Board   0021512500000000 0050-003    C03
Marin FPGA version 9, Jupiter ASIC version 1, Fresno FPGA version 110
I/O Board
Slot Type          S/N              Version FPGA version
2    8 port 10/100 0139040000000000 D03     10
Alarm Control Information:
Power failure audible alarm: disabled
Fan failure audible alarm: disabled
Low battery audible alarm: disabled
Temperature audible alarm: disabled
Normal alarm temperature is 149'F (65'C)
Severe alarm temperature is 167'F (75'C)
nsisg2000->

To change the threshold value of temperature alarms on SSG 320M/350M and SSG 520M/550M devices, use the following command:

SSG320M(M)-> set chassis temperature-threshold cpu celsius 75
The cpu alarm temperature is set to 167'F, 75'C
SSG320M(M)-> set chassis temperature-threshold system celsius 70
The system alarm temperature is set to 158'F, 70'C

To verify the change to the temperature threshold, the same get chassis command is used.

SSG320M(M)-> get chassis
Chassis Environment:
I/O fan1 Status: Good
I/O fan2 Status: Good
Memory fan Status: Good
CPU fan1 Status: Good
CPU fan2 Status: Good
CPU Temperature: 113'F ( 45'C)
System Temperature: 80'F ( 27'C)

Alarm Control Information:
Power failure audible alarm: disabled
Fan failure audible alarm: disabled
Temperature audible alarm: disabled
CPU alarm temperature is 167'F (75'C)
System alarm temperature is 158'F (70'C)

Slot Information:
Slot Name Status Asm-id Serial Number Version
0    mgt  Online 01f0   AA000000      REV 13
1 Empty
2 Empty
3 Empty

To change the threshold value of temperature alarms on the SSG-140 platform, use the syntax set temp <low temperature threshold> <high temperature threshold>. For example:

140-> set temp 20 60

140-> get chassis
Motherboard Information:
Serial Number: 0185072000000000
Control Number: ffffffff
Hardware Version: 1010(0)
CPLD Version: 3.2
System Temperature: 30 'C or 86 'F
Temperature Alarm Threshold: 20 - 60 'C

 

SSG-140 does not separate the system and CPU temperatures; there is only one temperature variable measured, as seen in get chassis above. Setting this command on SSG-140 will not trigger event logs, see KB29515 - [ScreenOS] After temperature alarm threshold values are modified on an SSG-140, a system temperature breach is not generating alarm events .

Modification History:
2017-12-07: Article reviewed for accuracy. No changes made. Article is correct and complete.
2020-10-26:  Minor, non-technical edits.
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