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4-3
Repair Information
Power Off Switch
To power off the switch:
1. Inform the customer the switch is to be powered off. Ensure the
system administrator quiesces Fibre Channel frame traffic
through the switch and sets attached devices offline.
2. Set the switch offline. For instructions, refer to Set Online State.
3. Disconnect the power cord from the AC connector at the rear of
the switch.
IML or Reset Switch
An initial machine load (IML) or reset is performed at the switch
front panel using the IML/RESET button. An IML does not cause
power-on diagnostics to execute and is not disruptive to Fibre
Channel traffic. An IML:
• Reloads switch firmware from FLASH memory.
• Resets the Ethernet LAN interface, causing the connection to the
browser PC or management server to drop momentarily until the
connection automatically recovers.
A reset is disruptive to Fibre Channel traffic and resets the:
• Microprocessor and functional logic for the control processor
(CTP) card and reloads the firmware from FLASH memory.
• Ethernet LAN interface, causing the connection to the browser PC
or management server to drop momentarily until the connection
automatically recovers.
• Ports, causing all Fibre Channel connections to drop momentarily
until the connections automatically recover. This causes attached
devices to log out and log back in, therefore data frames lost
during switch reset must be retransmitted.
ATTENTION ! A reset should only be performed if a CTP card failure is
indicated. Do not reset a switch unless directed to do so by a procedural step
or the next level of support.