Configuring Point to Point WANs HDLC and PPP
Point-to-point Wide Area Networks (WANs) provide dedicated connectivity between two network devices over a communication channel. Two common data link protocols used to establish a point-to-point WAN link are High-Level Data Link Control (HDLC) and Point-to-Point Protocol (PPP).
To configure a point-to-point WAN using HDLC or PPP, you need to perform the following steps:
Configure the physical interface with the appropriate encapsulation type. For example:
interface serial 0/0/0
encapsulation hdlc
or
interface serial 0/0/0
encapsulation ppp
Configure the WAN link parameters such as IP address, subnet mask, clock rate, bandwidth, and framing type. For example:
interface serial 0/0/0
ip address 192.168.1.1 255.255.255.252
clock rate 64000
bandwidth 64
framing ppp
Configure the authentication method for PPP. There are two types of authentication: Password Authentication Protocol (PAP) and Challenge Handshake Authentication Protocol (CHAP). For example:
interface serial 0/0/0
encapsulation ppp
ppp authentication chap
Configure the default route or static routes for routing traffic between the two devices. For example:
ip route 0.0.0.0 0.0.0.0 serial 0/0/0
Verify the configuration using the show commands. For example:
show interface serial 0/0/0
show ip route
Note that the exact commands and parameters may vary depending on the specific router and network setup.
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