R1
interface Loopback0
ip address 1.1.1.1 255.255.255.0
interface Serial0/0
ip address 123.1.1.1 255.255.255.0
encapsulation frame-relay
frame-relay map ip 123.1.1.3 103 broadcast
frame-relay map ip 123.1.1.2 102 broadcast
frame-relay map ip 123.1.1.1 102 broadcast
frame-relay lmi-type cisco
router rip
version 2
network 1.0.0.0
network 123.0.0.0
no auto-summary
R2
interface Loopback0
ip address 2.2.2.2 255.255.255.0
interface Serial0/0
ip address 123.1.1.2 255.255.255.0
encapsulation frame-relay
frame-relay map ip 123.1.1.3 201 broadcast
frame-relay map ip 123.1.1.1 201 broadcast
frame-relay map ip 123.1.1.2 201 broadcast
router rip
version 2
network 2.0.0.0
network 123.0.0.0
no auto-summary
R3
interface Loopback0
ip address 3.3.3.3 255.255.255.0
!
interface Serial0/0
ip address 123.1.1.3 255.255.255.0
encapsulation frame-relay
frame-relay map ip 123.1.1.1 301 broadcast
frame-relay map ip 123.1.1.2 301 broadcast
frame-relay map ip 123.1.1.3 301 broadcast
router rip
version 2
network 3.0.0.0
network 123.0.0.0
no auto-summary
R4
interface Serial0/1
encapsulation frame-relay
clock rate 64000
frame-relay lmi-type cisco
frame-relay intf-type dce
frame-relay route 102 interface Serial0/2 201
frame-relay route 103 interface Serial0/3 301
!
interface Serial0/2
encapsulation frame-relay
clock rate 128000
frame-relay lmi-type cisco
frame-relay intf-type dce
frame-relay route 201 interface Serial0/1 102
!
interface Serial0/3
encapsulation frame-relay
clock rate 128000
frame-relay lmi-type cisco
frame-relay intf-type dce
frame-relay route 301 interface Serial0/1 103