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LinkBuilder FDDI Workgroup Hub User Guide
Release Note
The system software has been preloaded into the hub management module flash
memory. Downloading the image to the FDDI Workgroup Hub disrupts the
ring. The download sequence isolates the hub from the ring during the power-
on self-test (POST) and may cause the ring to wrap or to isolate attached
stations. Downloads impact the ring the least when the hub is attached to the
ring in a ring of trees configuration as a single attachment hub.
Corrections in the User Guide
The information provided in this section corrects software- and hardware-related
errors and omissions.
Software-Related Corrections
The corrections below are software corrections:
Page 2-14: Check the Baud Rate Setting After
Post
When the power-on self-test (POST) is run, the hub’s serial port output defaults
to 9600 baud regardless of the baud rate setting in nonvolatile RAM. If you
have set the console baud rate to other than 9600, you may need to adjust the
attached terminal baud rate after POST has finished. The default baud rate
setting is 9600.
Page 2-14: Removing Modules
The first two steps for removing modules as given in the User Guide should be
reversed. They should read:
1. Enter the disconnect command.
This disables all ports and isolates the hub from the ring.
2. Disconnect all cables connected to the module that you want to
remove.
If possible, you should always turn off the power before attempting to remove or
insert hardware.