HP 10Base-T Hub 24M Manual page 101

Configuration Reference
4.
5.
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Type in the IP Address of the device that you want to act as a manager for
the hub and press [Enter]. The Hub Console Interface displays the following
prompt:
Enter in manager IP mask:
Type the subnet mask for the device that you want to act as a manager for
the hub and press [Enter].
The Hub Console Interface displays the authorized manager list with the
authorized manager you just changed at the bottom of the list. Note that
the authorized manager is identified first by its community name (far left
column) and then by network addressing information associated with the
management station.