3Com 3031 Command Reference Manual page 241

PPP and MP Configuration Commands 241
PPP is a link-layer protocol bearing network-layer packets over the point-to-point
link. It defines a whole set of protocols including LCP (link control protocol), NCP
(network-layer control protocol), PAP (Password Authentication Protocol) and
CHAP (Challenge Handshake Authentication Protocol). It is widely used for it
supports user authentication, easy scalability and
synchronization/asynchronization.
For the related command, see display interface.
Example
Configure PPP encapsulation on interface Serial 0/0/0.
[3Com--Dialer0] link-protocol ppp
mp binding-mode
Syntax
ppp mp binding-mode { authentication | both | descriptor }
undo ppp mp binding-mode
View
System view
Parameter
authentication: Performs the MP binding according to the authentication user
name of PPP.
both: Performs the MP binding based on both the authentication user name of
PPP and the terminal identifier.
descriptor: Performs the MP binding according to the terminal identifier.
Description
Using the ppp mp binding-mode command, you can set the MP binding
condition. Using the undo ppp mp binding-mode command, you can restore the
default value of the MP binding condition.
By default, it performs the MP binding based on both the authentication user
name of PPP and the terminal identifier.
User name is the peer one received by the PPP link performing the PAP or CHAP
authentication, while the terminal identifier, as a unique flag of a Router, is the
peer one received in performing the LCP negotiation. The system can perform the
MP binding base on the received user name and terminal identifier, and then the
interfaces with the identical user name or the same terminal identifier is bound
together.
For the related command, see ppp mp user.