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McDATA Sphereon 4300 Fabric Switch Installation and Service Manual
General Information
The switch also provides a predictive optics monitoring (POM)
feature that monitors operation of SFP optical transceivers. Digital
diagnostics-enabled optical transceivers report temperature, voltage
current, transceiver power, and receiver power to product firmware.
Optical transceivers also provide vendor-specific threshold values for
these parameters.
Power Supply
The switch contains one power supply with two internal cooling fans.
The assembly is not a FRU. The power supply steps down and
rectifies facility input power to provide 3.3 volts direct current (VDC),
5 VDC, and 12 VDC to the control processor (CTP) card. The power
supply also provides input filtering, overvoltage protection, and
overcurrent protection, and is input rated at 90 to 264 volts
alternating current (VAC).
Three cooling fans (two integrated in the power supply) provide
cooling for the power supply and CTP card, as well as redundancy
for continued operation if a single fan fails.
Controls, Connectors, and Indicators
Controls, connectors, and indicators for the switch include the:
• IML/RESET button.
• Ethernet LAN connector.
•Green PWR and amber ERR LEDs.
• Green, blue, and amber status LEDs associated with FRUs.
• RS-232 maintenance port.
IML/RESET Button
When the IML/RESET button is pressed, held for three seconds, and
released, the switch performs an IML that reloads the firmware from
FLASH memory. This operation is not disruptive to Fibre Channel
traffic. When the IML/RESET button is pressed and held for ten
seconds, the switch performs a reset. After three seconds, the ERR
LED blinks at twice the unit beaconing rate. A reset is disruptive to
Fibre Channel traffic and resets the:
• Microprocessor and functional logic for the CTP card and reloads
the firmware from FLASH memory.