HP A5500 EI Command Reference Manual page 105

If the access device is configured to send usernames that carry the domain name to the RADIUS server,
the username of the RADIUS user configured here must contain the domain name. If not, the username of
the RADIUS user configured here does not contain the domain name.
Related commands: user-name-format (RADIUS scheme view).
Examples
# Create RADIUS user user1 and enter its view.
<Sysname> system-view
[Sysname] radius-server user user1
[Sysname-rdsuser-user1]
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