Temperature threshold levels

The switch fans have two speeds, low and high. The fan speed settings are set by the device, and are not configurable.

During system bootup, the fans run at high speed. If the switch does not detect any fans, the switch shuts down.

After bootup, the fans operate at low speed when the temperature of the switch is below the high limit temperature that is specified in the following table. If the switch reaches the high limit temperature, the fans operate at high speed until the switch reaches the low limit temperature specified in the table, at which time the fans decrease to low speed.

If the switch reaches or exceeds the critical (shutdown) temperature for two minutes, the switch shuts down.

Note: In addition to the overall temperature of the module, the ICX 7250-24P and ICX 7250-48P modules monitor the temperature of the Power Over Ethernet (PoE) power supply unit (PSU). When the low limit and high limit temperatures are reached, the PoE PSU fans change speed using the same algorithm as the module fans. There is no change to the Critical (shutdown) temperature value for these modules.

Temperature thresholds

Model

Low limit temperature

High limit temperature

Critical (shutdown) temperature

ICX 7250-24G

71° C

98° C

105° C

ICX 7250-24

67° C

98° C

105° C

ICX 7250-24P

82° C

PoE PSU: 34° C

93° C

PoE PSU: 41° C

105° C

ICX 7250-48P

85° C

PoE PSU: 49° C

95° C

PoE PSU: 57° C

105° C

ICX 7250-48

67° C

98° C

105° C

Parent topic: Managing temperature settings