User`s guide

AT-S39 User’s Guide
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RADIUS client software for the 802.1x port-based access control
feature, but not for the manager accounts feature, leave this
option disabled.
The following prompt is displayed:
Server Based User Authentication (E-Enabled, D-
Disabled) ->
e. Type E to enable the manager account feature on the switch or D
to disable it. The default is disabled.
f. After you have finished configuring the parameters, type S to
select Save Configuration Changes.