168 CHAPTER 12: CONFIGURING PPP AND MP
Tabl e 194 Configure the link layer protocol of the interface to PPP
The default link layer protocol of the interface is PPP.
2Configure PPP Authentication
PPP has two authentication modes: PAP mode and CHAP mode. CHAP
authentication is more secure.
■Configure PAP authentication
aConfigure the authenticator of PAP authentication
Perform the following configuration in the interface view, and use the user
command in the system view.
Tabl e 195 Configure the local authenticates the peer in PAP mode
bConfigure the requester of PAP authentication
Perform the following configuration in the interface view.
Tabl e 196 Configure the peer authenticates the local in PAP mode
While configuring PAP authentication, note following:
■If one side originates the PAP, authenticator should add username and
password for the requester in the local database (use local-user
command). The requester should send its username and password to the
authenticator (use ppp pap local-user command).
■If one side originates the PAP, authenticator only needs to start PAP
authentication itself (use ppp authentication-mode pap command). The
requester does not need to configure the command.
■If both sides originate PAP simultaneously, then each side is both
authenticator and requester. At this time, both sides need to configure all
the commands supporting the PAP authentication.
■Configure CHAP authentication
aConfigure the authenticator of CHAP authentication
Perform the following configuration in the interface view, and use the
local-user command in the system view.
Operation Command
Configure the link layer protocol of the interface to PPP link-protocol ppp
Operation Command
Enable PAP authentication ppp authentication-mode pap [
callin ] [scheme { default |
name-list }]
Disable PPP authentication undo ppp authentication-mode
Add the username and password of the peer
into the local user list local-user user password {
simple | cipher } password
service-type ppp
Operation Command
Configure PAP username and password when
the peer authenticates the local in PAP mode ppp pap local-user username
password { simple | cipher }
password
Delete the above configured username and
password sent during authentication in PAP
mode
undo ppp pap local-user