Brocade Communications Systems ICX 7250, Руководство по установке оборудования, Страница: 93 / 119

Managing an ICX 7250 Device
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Managing temperature settings................................................................................................................................................................................93
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Displaying CPU usage................................................................................................................................................................................................... 96
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Removing MAC address entries.............................................................................................................................................................................. 96
DANGER
The procedures in this manual are for qualified service personnel.
Managing temperature settings
The device contains temperature sensors that the software reads based on a configurable device poll time. The devices have two
automatic speed fan control settings based on the temperature. To protect the device from overheating, the following temperature
threshold levels exist:
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The warning level is the temperature at which the device generates a syslog message. It is configurable up to 100°C.
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The shutdown level is the temperature at which the device reboots. It is set by the device and is not configurable. When the
device temperature reaches the shutdown level, it generates a warning message that the device’s temperature is over the
shutdown level and the device shuts down in five minutes. The system restarts five minutes after the device reaches the
temperature shutdown level.
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.
TABLE 13 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
Brocade ICX 7250 Switch Hardware Installation Guide
53-1003898-02 93