Configuring Frame Relay

Normally, you will be a customer who is attaching to a provider’s frame relay switch.  For the purposes of the Sybex lab – we will need to configure one of the routers to act as a frame relay switch.  This means we will need to change the default router configuration, which is DTE, and tell it to act as a DCE device with the “frame-relay  intf-type dce” command:

For this example we will be using one service provider switch, with two access routers connecting to it:

Configure Edge Switch

frame-relay switching    - change device from router to FR switch

int s0

encap frame-relay

frame-relay intf-type dce

int s1

encap frame-relay

frame-relay intf-type dce

NOTE:  now the s0 and s1 line protocol state will change to “DOWN”

int s0

frame-relay interface-dlci 16

int s1

frame-relay interface-dlci 17

Configure FR Access Routers

at router1

int s0

encap frame-relay

frame-relay interface-dlci 16

at router2

int s1

encap frame-relay

frame-relay interface-dlci 17

To see the Frame Relay IP and IPX to DLCI mappings:

show frame map

To see the PVC’s and DLCI info:

            show frame pvc            (show run will also list DLCI’s)