Chapter 13: AI2524 Frame Relay Configuration Steps
August 1997 Page 13-25
2524UM
Point-to-Point Subinterfac es
In interface configuration mode, configure transparent bridging for
point-to-point subinterfaces:
1. Specify a serial interface.
interface serial
number
2. Configure Frame Relay encapsulation on the serial interface.
encapsulation frame-relay
3. Specify a subinterface.
interface serial

number.subinterface-number

point-to-point
4. Associate a DLCI with the subinterface.
frame-relay interface-dlci
dlci
[
option
]
5. Associate the subinterface with a bridge group.
bridge-group
bridge-group
Example: Unnumbered IP over a Point-to-Point Subinterface
This example sets up unnumbered IP over subinterfaces at both ends
of a point-to-point connection. In this example, R out er A functions as
the DTE, and Router B functions as the DCE. Router s A and B are both
attached to Token Ring networks.
Configuration for Router A
frame-relay switching
!
interface token-ring 0
ip address 131.108.177.1 255.255.255.0
!
interface serial 0
no ip address
encapsulation frame-relay IETF
!
interface Serial0.2 point-to-point
ip unnumbered TokenRing0
ip pim sparse-mode
frame-relay interface-dlci 20