|
This
module presents an overview of WAN technologies. It introduces and
explains WAN terminology such as serial transmission, time
division multiplexing (TDM), demarcation, data terminal equipment
(DTE) and data circuit-terminating equipment (DCE). The
development and use of high-level data link control (HDLC)
encapsulation as well as methods to configure and troubleshoot a
serial interface are presented.
Point-to-Point Protocol (PPP) is the protocol of choice to
implement over a serial WAN switched connection. It can handle
both synchronous and asynchronous communication and includes error
detection. Most importantly it incorporates an authentication
process using either CHAP or PAP. PPP can be used on various
physical media, including twisted pair, fiber optic lines and
satellite transmission.
Described in this module are
configuration procedures for PPP, available options, and
troubleshooting concepts. Among the options available is the ability
of PPP to use PAP or CHAP authentication.
Students completing this module should be able to:
-
Explain serial communication
-
Describe and give an example of TDM
-
Identify the demarcation point in a
WAN
-
Describe the functions of the DTE and DCE
-
Discuss the development of HDLC encapsulation
-
Use the
encapsulation hdlc command to configure HDLC
-
Troubleshoot a serial interface using
the
show interface
and
show controllers
commands
-
Identify the advantages of using PPP
-
Explain the functions of the Link Control Protocol (LCP) and the
Network Control Protocol (NCP) components of PPP
-
Describe the parts of a PPP frame
-
Identify the three phases of a PPP
session
-
Explain the difference between PAP and
CHAP
-
List the steps in the PPP
authentication process
-
Identify the various PPP configuration
options
-
Configure PPP encapsulation
-
Configure CHAP and PAP authentication
-
Use
show interface
to verify the serial encapsulation
-
Troubleshoot any problems with the PPP
configuration using
debug PPP
|
