Configuration Examples; Example: Ppp Configuration - Cisco 800M Series Configuration Manual

Chapter 4 Configuring the Serial Interface
DETAILED STEPS
Command or Action
Step 1
physical-layer async
Example:
Router(config-if)# physical-layer async
You cannot use the physical-layer async command for frame-relay encapsulation.
Note
When you make a transition from asynchronous mode to synchronous mode in serial interfaces, the
interface state becomes down by default. You should then use the no shutdown option to bring the
interface up.

Configuration Examples

Example: PPP Configuration:

This example shows how to configure PPP encapsulation with CHAP authentication.
Router> enable
Router# configure terminal
Router(config)# hostname R1
R1(config)# username R2 password cisco
R1(config)# interface serial 0/0/0
R1(config-if)# encapsulation ppp
R1(config-if)# ppp authentication chap
R1(config-if)# exit
Router> enable
Router# configure terminal
Router(config)# hostname R2
R2(config)# username R1 password
R2(config)# interface serial 0/0/0
R2(config-if)# encapsulation ppp
R2(config-if)# ppp authentication chap
R2(config-if)# exit
This example shows how to configure PPP encapsulation with PAP authentication.
Router> enable
Router# configure terminal
Router(config)# hostname R1
R1(config)# username R2 password cisco
R1(config)# interface serial 0/0/0
R1(config-if)# encapsulation ppp
R1(config-if)# ppp authentication PAP
R1(config-if)# ppp pap sent-username R1 password cisco
R1(config-if)# end
Router> enable
Router#configure terminal
Purpose
Specifies the mode of a low-speed interface as either
synchronous or asynchronous.
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Cisco 800M Series Integrated Services Routers Software Configuration Guide
Configuration Examples
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