The first step in configuring Frame Relay is to select the interface and then enable the Frame
Relay encapsulation on the serial interface. You do this with the
encapsulation frame-relay
command. As you will notice in the following router configuration commands, there are two
options:
cisco
and
ietf
.
Router#
config t
Router(config)#interface serial 0
Router(config-if)#encapsulation frame-relay [cisco or ietf]
Cisco is the default encapsulation, which means that you have another Cisco router on the
remote end with which your router will communicate. You will use the IETF encapsulation
when communicating with a remote router that is not a Cisco device.
After you configure the encapsulation to the serial interface, you then need to add the Network
layer address, DLCI number, and LMI type. Cisco’s capability to autosense the LMI type has
greatly simplified configuration. The following router configuration shows the process of specifying
the IP address and DLCI number, but not the LMI type because it is automatically detected:
Router(config-if)#ip address 172.16.10.1 255.255.255.0
Router(config-if)#frame-relay interface-dlci 16
Router(config-if)#no shutdown