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Brocade MLX Series and Brocade NetIron XMR Hardware ...

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8Replacing a power supplyCabling a fiber-optic transceiverTo cable a fiber-optic transceiver, perform the following steps:1. Before cabling a fiber-optic transceiver, it is strongly recommended that you clean the cableconnectors <strong>and</strong> the port connectors. For more information, refer to “Replacing a managementmodule” on page 350.2. Gently insert the two cable connectors (a tab on each connector should face upward) into theport connectors until the tabs lock into place.Replacing a power supplyYou can replace a power supply while the device is powered on <strong>and</strong> running. For the location of thepower supplies (AC or DC) refer to Chapter 1, “Product Overview”.CAUTIONIf you are hot-swapping a module, power supply, or fan tray, allow a minimum of two secondsafter a module (or power supply or fan tray) has been removed before inserting a module in thesame slot.Determining which power supply failedTo determine which power supply has failed, enter the show chassis comm<strong>and</strong> at any CLIcomm<strong>and</strong> prompt.<strong>Brocade</strong># show chassisThis comm<strong>and</strong> displays status information for the fans <strong>and</strong> power supplies, <strong>and</strong> temperaturereadings for various components in the device. The power supplies are numbered in the display.Refer to “Displaying device status <strong>and</strong> temperature readings” on page 324 for more information.If a power supply has failed, the display indicates “Installed (Failed)” <strong>and</strong> identifies the slot in whichthe failed power supply is installed.Setting the threshold for power supply monitoringThe power-supply monitoring threshold comm<strong>and</strong> monitors the power supply state, <strong>and</strong> indicateswhen a power supply will shut down due to failure.To set a threshold value for power supply monitoring, enter the following comm<strong>and</strong>.<strong>Brocade</strong>(config)#power-supply monitoring threshold 3A Power Supply will be Shutdown if it fails 3 times within an HourThe power supply will flap three times within an hour, after which the power supply willautomatically shut down.Syntax: [no] power-supply monitoring [threshold ]The variable specifies the number of flaps within an hour after which a power supply willautomatically shutdown. The threshold range is from 0 through 32. The default value is 5. A valueof 0 disables the power supply auto-shutdown on flapping.354 <strong>Brocade</strong> <strong>MLX</strong> <strong>Series</strong> <strong>and</strong> <strong>Brocade</strong> <strong>NetIron</strong> <strong>XMR</strong> <strong>Hardware</strong> Installation Guide53-1002373-02

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