display fan speed-adjust threshold minus
Function
The display fan speed-adjust threshold minus command displays the temperature thresholds for fan speed adjustment.
Format
display fan speed-adjust threshold minus [ slot slot-id ]
The following switches do not support this command:
- S2720-EI series: S2720-12TP-EI, S2720-12TP-PWR-EI, S2720-28TP-EI, S2720-28TP-PWR-EI-L
- S5720-LI series: S5720-12TP-LI-AC, S5720-12TP-PWR-LI-AC, S5720-28P-LI-AC, S5720-28TP-LI-AC, S5720-28TP-PWR-LI-AC, S5720-28X-LI-AC, S5720-28X-LI-DC, and S5720-16X-PWH-LI-AC
- S5735-L, S5735S-L, and S5735S-L-M series: S5735-L12T4S-A, S5735-L24T4S-A, S5735S-L24T4S-MA, S5735S-L24FT4S-A, S5735S-L12T4S-A, and S5735S-L24T4S-A
- S5720S-LI series: S5720S-12TP-LI-AC, S5720S-12TP-PWR-LI-AC, S5720S-28P-LI-AC, S5720SV2-28P-LI-AC, S5720S-28TP-PWR-LI-AC, and S5720S-28X-LI-AC
- S5720S-SI series: S5720S-28P-SI-AC, S5720S-28X-SI-AC, and S5720S-28X-SI-DC
- S5720I-SI series: S5720I-6X-PWH-SI-AC, S5720I-10X-PWH-SI-AC, S5720I-12X-SI-AC, and S5720I-12X-PWH-SI-DC
- S5735-S-I series
- S5731-H series, S5731S-H series, S5731-S series, S5731S-S series, S5732-H series
- S6730-H series, S6730S-H series, S6730-S series, S6730S-S series
If one of the preceding switches can set up a stack with other switch models that support this command, this switch also supports this command so that this command can be executed and delivered in the stack.
Parameters
Parameter |
Description |
Value |
|---|---|---|
slot slot-id |
Specifies a slot ID. If this parameter is not specified, the threshold settings in all slots are displayed. |
The value depends on the device configuration. |
Usage Guidelines
This command displays the temperature thresholds for fan speed adjustment, including the default values and current values.
In some situations, the higher the device temperature, the slower the fan speed may be. This is because the device temperature range when the fan speed increases overlaps with that when the fan speed decreases.
For example, if the threshold for fan speed adjustment is as follows:
- When the fan speed is 55%, the device temperature may be lower than or equal to 60°C.
- When the fan speed is 60%, the device temperature may be in the range from 55°C to 60°C.
- When the fan speed is 65%, the device temperature may be in the range from 56°C to 58°C.
- When the fan speed is 70%, the device temperature may be in the range from 54°C to 56°C.
- When the fan speed is 80%, the device temperature may be in the range from 52°C to 56°C.
- When the fan speed is 90%, the device temperature may be in the range from 53°C to 56°C.
- When the fan speed is 100%, the device temperature may be higher than 54°C.
The fan speed remains at 55% before the device temperature reaches 60°C from the startup temperature. If the temperature exceeds 60°C, the fan speed increases to 60%.
- If the temperature decreases to a value between 55°C and 60°C, the fan speed remains at 60%. If the temperature decreases to lower than 55°C, the fan speed reduces to 55% accordingly.
- If the temperature is still higher than 60°C, the fan speed increases to 65%.
The same rule applies to other temperatures.
Example
# Display the temperature thresholds for fan speed adjustment.
<HUAWEI> display fan speed-adjust threshold minus
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Slot Default Range Current Range Speed Rate Adjusted
-----------------------------------------------------------
0 NA - 56 NA - 56 35%
53 - 58 53 - 58 40%
55 - 58 55 - 58 45%
55 - 58 55 - 58 50%
52 - 57 52 - 57 60%
54 - 56 54 - 56 70%
54 - 57 54 - 57 80%
55 - 58 55 - 58 90%
56 - NA 56 - NA 100%
Item |
Description |
|---|---|
Slot |
Slot ID. |
Default Range |
Default temperature thresholds, which change based on the PoE power load. |
Current Range |
Current temperature thresholds. To set temperature thresholds, run the set fan speed-adjust threshold minus command. The new thresholds are the fixed temperature thresholds minus the configured value. After this command is executed, both the threshold for increasing the fan speed and the threshold for lowering the fan speed are reduced. |
Speed Rate Adjusted |
Fan speed adjustment range. |