PPP Command List

PPP Command List

PPP configuration is often done in connection with configuring other services. To configure PPP on the router, complete the following tasks:

1. Set PPP encapsulation on the interface. You must set the encapsulation method to PPP before you can configure authentication or compression.
2. Select CHAP and/or PAP as the authentication method (optional).
3. If authentication is used, configure username/password combinations.

PPP options are configured in interface mode for a specific interface.

Use . . .	To . . .
Router(config-if)#encapsulation ppp	Set the encapsulation type to PPP
Router(config-if)#ppp authentication <chap|pap> Router(config-if)#ppp authentication chap pap	Set the authentication method(s) When multiple methods are specified, the first method will be tried first
Router(config-if)#ppp compression	Set compression options
Router(config-if)#ppp chap|pap password <password>	Set the password used with CHAP or PAP for an unknown host
Router(config)#username <hostname> password <password>	Set the username and password for the local router
Router(config)#bandwidth <value>	Set a bandwidth value for an interface
Router#show interface	View encapsulation and PPP information on an interface

To hide the CHAP password from view in the configuration file, use the service password-encryption command from the global configuration mode.

Example
The following commands configure the SFO router to use PPP and enable it to connect to the LAX router using PAP authentication.

SFO(config)#hostname LAX password cisco5

SFO(config)#int s0/1/0

SFO(config-if)#encap ppp

SFO(config-if)#ppp auth pap