What is WAN ?• A WAN is a data communications network that operates beyond the geographic scope of a LAN.. WAN Physical Layer Terminology... WAN Physical Layer Standards... Smart Serial
Trang 1BSCI v3.0—2-1
WAN INTRODUCTION
Trang 2What is WAN ?
• A WAN is a data communications network that operates
beyond the geographic scope of a LAN.
• WANs are different from LANs in several ways While a LAN connects computers, peripherals, and other devices in a
single building or other small geographic area, a WAN allows the transmission of data across greater geographic
Trang 3What is WAN ?
Trang 4WANs vs LANs
Trang 5What is WAN ?
Trang 6WAN Connection Options
Trang 7What is WAN ?
Trang 8WAN Physical Layer Terminology
Trang 9WAN Physical Layer Standards
Trang 10WAN Link Connection Types
Trang 11BSCI v3.0—2-11
PPP & HDLC
Trang 12Smart Serial
Trang 13Smart Serial connector
Trang 14Set clock rate
(on DCE interfaces only).
Set bandwidth
(recommended).
Configuring a Serial Interface
Trang 15Shows the serial cable type
Serial Interface show controller Command
Trang 16HDLC
Trang 17RouterX(config-if)# encapsulation hdlc
Enables Cisco HDLC encapsulation
Uses the default encapsulation on synchronous serial interfaces
Configuring HDLC Encapsulation
Trang 19PPP
Trang 20PPP PHYSICAL LAYER
Trang 21LCP
Trang 22NCP
Trang 23Establishing a PPP Session
Trang 24RouterX(config-if)# encapsulation ppp
Enables PPP encapsulation
Enable PPP Encapsulation
Trang 25ip address 10.0.1.2 255.255.255.0 encapsulation ppp
Trang 26Authentication means to put a username and password before accessing the network.
There is two authentication protocols:
• PAP (PPP Authentication Protocol).
• CHAP (Challenge Handshake Authentication
Protocol).
Authentication
Trang 27PPP AUTHENTICATION
Trang 28PAP
Trang 30CHAP
Trang 33PAP AUTHENTICATION
Trang 34CHAP AUTHENTICATION