Motorola Netopia 3397GP Administrator's Handbook page 189

option [ off | on | pap-only | chap-only ]
Specifying on turns both PAP and CHAP on, or you can select PAP or CHAP. Specify the
password when port authentication is turned on (both CHAP and PAP, CHAP or PAP.) Authentication
must be enabled before you can enter other information.
set ppp module [vccn] port-authentication username username
The username argument is 1 – 255 alphanumeric characters. The information you enter must match
the username configured in the PPP peer's authentication database.
set ppp module [vccn] port-authentication password password
The password argument is 1 – 128 alphanumeric characters. The information you enter must match
the password used by the PPP peer.
username and
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