3Com 5101M-MGT Download in Progress LED, Reset Button, RS-232 Serial Port

Download in Progress LED

The Download in Progress LED displays a steady yellow glow when software is being downloaded to the Flash EPROM on the EMM. See Chapter 5, Software Download Instructions, for details on downloading new software.

Note that you need the Firmware Distribution Kit3Com Firmware Distribution Kit (part number 5000-FDK) to initiate the download of new software provided in the Update Distribution Kit (part number 5101M-UDKx-x.xx).

Reset Button

The Reset Button resets the EMM and executes self-test diagnostic routines (network traffic is not affected). You should press this button only when you suspect problems with the EMM. The Reset Button is recessed to prevent an accidental reset, yet you can access it with a pen tip or a small screwdriver.

When the EMM is reset, it will come up under the last saved configuration parameters. Pushing this button has the same effect as issuing the RESET DEVICE command with one exception. Pushing the Reset button will cause any unsaved changes to be lost. Issuing the RESET command on an EMM after changes have been made but not saved causes a message to display warning you that unsaved changes exist. The RESET command aborts and cannot be executed until the SAVE command is issued.

RS-232 Serial Port

The 25-pin (DB-25) RS-232 serial port is a DTE male connector used to connect the EMM to a terminal or modem so you can enter management commands and download new software.

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