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2-15
Switch Operation
Diagnostic Tests
Diagnostic tests are performed whenever the switch is powered
up or reset. Upon power-up, the test results are displayed on
the PC attached to the Console port. During the test sequence,
the switch detects whether or not the software is loaded. If it is,
the Main Menu is displayed. Otherwise, the Boot Loader Menu
is displayed so that new software can be downloaded.
Note: Diagnostics are not displayed when the Reset Button is
pressed.
Software Downloads
Software is downloaded into a single 256 KB Flash ROM on the
switch. The software can be downloaded in-band via TFTP or
out-of-band via the RS-232 Console port. (See “Downloading
New Software” in Chapter 5.)
Non-volatile Parameter Storage
Important operating parameters, such as IP address, Spanning
Tree configuration, and management security parameters, are
stored in non-volatile Flash memory and retain their values
during a power failure.
Note: Since RMON parameter settings and learned addresses
are not stored in non-volatile RAM, these values are not
retained during a power failure. They are cleared
whenever the switch is reset.
ABOUT THE SWITCHES