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Chapter 3. 8237 Administration
3-5
Note: Unlike the Model 002, the Model 001 does not have a guest
password status that provides read-only access.
Write values into EEPROM
Type w and press Enter to cause all changes you have made to the
Model 001’s configuration to be written to nonvolatile memory. If you do
not do this, changes will be lost the next time the 8237 is restarted.
Xmodem Download
Type x and press Enter to initiate an Xmodem download of new
microcode. After starting this process, follow your emulation software’s
file transfer procedure. Remember that since you will be transferring a
file from your workstation, you will use the software’s upload function.
Following a successful Xmodem file transfer, the 8237 will restart and you
will see the diagnostic messages that are displayed after a normal
powering on of the system.
Exit
Type q and press Enter to exit the Model 001 interface program and
return to the password prompt. If you have made changes, but have not
written them to memory, you will be prompted to do this before exiting the
user interface.
Set FEM Status
If your Model 001 has an FEM installed, entering f on the Main Menu causes the
panel illustrated in Figure 3-2 to be displayed.
****************************************************
*IBM 8237 Stackable Ethernet Hub 10BASE-T Model 001*
****************************************************
FEM Status
----------
Duplex : negotiated half-duplex
Forward : adaptive cut-through
Back Pressure : enable
===============================
Command
-------
d = Set duplex mode
m = Set forward mode
b = Set back pressure
r = Return to Main Menu
Enter command :
Figure 3-2. Model 001 Set FEM Status Panel
Set duplex mode
Type d and press Enter to display a window in which you can enter 1 to
set the FEM to half-duplex mode, 2 to set it to full-duplex mode, or 3 to
set it to auto-negotiation mode. Use half-duplex mode when connecting
to a shared collision domain, such as another hub. Full-duplex mode can
be used when making a dedicated connection to another device, such as
a workstation, server, or switch. Auto-negotiation mode will automatically
select half-duplex or full-duplex to match the attached device, providing it
also supports auto-negotiation.
Summary of Contents for 8237
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