Brocade Communications Systems MLX Series Installationsanleitung PDF herunterladen (Seite 250)

236 Brocade MLX Series and NetIron XMR Hardware Installation Guide

53-1003267-02

Managing the cooling system

• If the temperature of a management module, switch fabric module, or one interface module

exceeds the high threshold specified for a fan speed, the fan changes to the next higher speed.

If the temperature of any of the modules exceeds the high threshold for the high speed, the

router shuts down the modules to prevent damage. The router also sends a warning message

to the system log and an SNMP trap. For information about viewing the warning messages,

refer to “Displaying temperature warnings” on page 243.

• The frequency with which the temperature is checked is determined by the setting of the

temp-poll-period command. For information about temp-poll-period command, refer to

“Changing the temperature polling interval” on page 241.

• If the temperature of a management module, switch fabric module, and interface modules

falls below the low threshold for a fan speed, the fan changes to the next lower speed. If the

temperature of all modules falls below the high threshold for the low speed, the fan operates

at the low speed.

• Table 37 describes default low and high temperature thresholds for each module and fan

speed for Brocade MLX and NetIron XMR routers.

TABLE 37 Default temperature thresholds for modules and fan speeds for Brocade MLX and NetIron XMR

devices

Fan speed Low temperature threshold High temperature threshold

Management modules

High 77° C85° C

Medium-high 67° C80° C

Medium 57° C70° C

Low –1° 60° C

Management modules CPU

High 75° C95° C

Medium-high 65° C80° C

Medium 55° C70° C

Low –1° 60° C

Interface modules*

High 85° C (56° C) 100° C (95° C)

Medium-high 75° C (51° C) 90° C (60° C)

Medium 67° C (46° C) 80° C (55° C)

Low –1° 70° C (50° C)

Interface modules Packet Processor*

High 95° C (70° C) 113° C (113° C)

Medium-high 85° C (60° C) 100° C (75° C)

Medium 50° C (45° C) 90° C (65°

Low –1° 80° C (50° C)

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Brocade Communications Systems MLX Series Installationsanleitung Seite 250