3Com 09-0487-002 manual Corrections in the User Guide, Software-Related Corrections

2LinkBuilder 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.