David Sudjiman

This is the answer from Scenario 1: Frame Relay on Multipoint and Point-to-point Subinterfaces.

Frame Relay Switch Configuration

fr_switch#sh run
Building configuration...

Current configuration : 1530 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname fr_switch
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip subnet-zero
no ip domain lookup
!
frame-relay switching
!
!
!
interface Ethernet0
 no ip address
 shutdown
!
interface Serial0
 no ip address
 shutdown
 no fair-queue
!
interface Serial1
 no ip address
 encapsulation frame-relay
 clock rate 56000
 frame-relay intf-type dce
 frame-relay route 122 interface Serial2 221
 frame-relay route 123 interface Serial3 321
 frame-relay route 124 interface Serial4 421
!
interface Serial2
 no ip address
 encapsulation frame-relay
 clock rate 56000
 frame-relay intf-type dce
 frame-relay route 221 interface Serial1 122
 frame-relay route 223 interface Serial3 322
!
interface Serial3
 no ip address
 encapsulation frame-relay
 clock rate 56000
 frame-relay intf-type dce
 frame-relay route 321 interface Serial1 123
 frame-relay route 322 interface Serial2 223
!
interface Serial4
 no ip address
 encapsulation frame-relay
 clock rate 56000
 frame-relay intf-type dce
 frame-relay route 421 interface Serial1 124
!
interface Serial5
 no ip address
 shutdown
!
interface Serial6
 no ip address
 shutdown
!
interface Serial7
 no ip address
 shutdown
!
interface Serial8
 no ip address
 shutdown
!
interface Serial9
 no ip address
 shutdown
!
interface BRI0
 no ip address
 shutdown
!
ip http server
ip classless
!
!
!
!
line con 0
 exec-timeout 0 0
line aux 0
line vty 0 4
 login
!
end

R1 Configuration.

!
hostname R1
!
interface Serial0
 no ip address
 encapsulation frame-relay
!
interface Serial0.1 multipoint
 ip address 10.1.1.1 255.255.255.0
 frame-relay map ip 10.1.1.2 122 broadcast
 frame-relay map ip 10.1.1.3 123 broadcast
!
interface Serial0.2 multipoint
 ip address 10.2.2.1 255.255.255.252
 frame-relay map ip 10.2.2.2 124 broadcast
!
router rip
 version 2
 network 10.0.0.0
!
end

R2 Configuration.

hostname R2
!
interface Serial0
 no ip address
 encapsulation frame-relay
!
interface Serial0.1 multipoint
 ip address 10.1.1.2 255.255.255.0
 frame-relay map ip 10.1.1.1 221 broadcast
 frame-relay map ip 10.1.1.3 223 broadcast
!
router rip
 version 2
 network 10.0.0.0
!
end

R3 Configuration.

hostname R3
!
interface Serial0
 no ip address
 encapsulation frame-relay
!
interface Serial0.1 multipoint
 ip address 10.1.1.3 255.255.255.0
 frame-relay map ip 10.1.1.1 321 broadcast
 frame-relay map ip 10.1.1.2 322 broadcast
!
router rip
 version 2
 network 10.0.0.0
!
end

R4 Configuration.

!
hostname R4
!
interface Serial0
 no ip address
 encapsulation frame-relay
!
interface Serial0.1 point-to-point
 ip address 10.2.2.2 255.255.255.252
 frame-relay interface-dlci 421
!
router rip
 version 2
 network 10.0.0.0
!
end