Activity e-Lab Activity: username name password password In this activity, the student will demonstrate how to use the username name password password command. Web Links Configuring and Troubleshooting PPP Password Authentication Protocol (PAP) http://www.cisco.com/en/US/tech/tk713/ tk507/technologies_tech_ note09186a0080093c6f.shtml
Content 3.3 Configuring PPP 3.3.4 Verifying the serial PPP encapsulation configuration Use the show interfaces serial command to verify proper configuration of HDLC or PPP encapsulation. The command output in Figure illustrates a PPP configuration. When high-level data link control (HDLC) is configured, "Encapsulation HDLC" should be reflected in the output of the show interfaces serial command. When PPP is configured, its Link Control Protocol (LCP) and Network Control Protocol (NCP) states can be checked using the show interfaces serial command.Figure lists commands used when enabling, configuring and verifying PPP. Lab Activity Lab Exercise: Verifying PPP Configuration In this lab, the student will configure a serial interface on the Brasilia and Warsaw routers with the PPP protocol. Lab Activity e-Lab Activity: Verify PPP Protocol In this lab, the student will configure a serial interface on the Brasilia and Warsaw routers with the PPP protocol. Web Links Configuring and Troubleshooting PPP Password Authentication Protocol (PAP) http://www.cisco.com/en/US/tech/ tk713/tk507/ technologies_tech_ note09186a0080093c6f.shtml
Content 3.3 Configuring PPP 3.3.5 Troubleshooting the serial encapsulation configuration The debug ppp authentication command displays the authentication exchange sequence. Figure illustrates the Left router output during CHAP authentication with the router on the right when debug ppp authentication is enabled. With two-way authentication configured, each router authenticates the other. Messages appear for both the authenticating process and the process of being authenticated. Use the debug ppp authentication command to display the exchange sequence as it occurs. Figure highlights router output for a two-way PAP authentication. The debug ppp command is used to display information about the operation of PPP. The no form of this command disables debugging output. Router#debug ppp {authentication | packet | negotiation | error | chap}
Router#no debug ppp {authentication | packet | negotiation | error | chap} Lab Activity Lab Exercise: Troubleshooting PPP Configuration In this lab, the student will configure a serial interface on the London and Paris routers and troubleshoot the connection. Lab Activity e-Lab Activity: Troubleshooting a Serial Interface In this lab, the student will configure a serial interface on the London and Paris routers then use show commands to troubleshoot and connectivity issues.
Content Summary An understanding of the following key points should have been achieved: