Hi
Here is the config from my 1720, should help you out.
Current configuration : 1243 bytes
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname frame_switch
!
logging buffered 4096 debugging
!
ip subnet-zero
!
!
no ip domain-lookup
!
frame-relay switching
!
!
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/0
description to Bilad
no ip address
encapsulation frame-relay
shutdown
no fair-queue
clockrate 128000
frame-relay lmi-type cisco
frame-relay intf-type dce
frame-relay route 300 interface Serial0/2 100
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial0/1
description to SBEI
no ip address
encapsulation frame-relay
shutdown
clockrate 128000
frame-relay lmi-type cisco
frame-relay intf-type dce
frame-relay route 400 interface Serial0/2 200
!
interface Serial0/2
no ip address
encapsulation frame-relay
shutdown
clockrate 128000
frame-relay lmi-type cisco
frame-relay intf-type dce
frame-relay route 100 interface Serial0/0 300
frame-relay route 200 interface Serial0/1 400
!
interface Serial0/3
no ip address
shutdown
clockrate 2000000
!
ip classless
no ip http server
ip pim bidir-enable
!
!
line con 0
line aux 0
line vty 0 4
!
end
frame_switch#
