實驗拓撲圖如上所示：
R1配置：
R1#sh run
Building configuration...
Current configuration : 1155 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!
interface Loopback0
ip address 1.1.1.1 255.255.255.0
ip router isis
!
interface Serial0/0
no ip address
encapsulation frame-relay
serial restart-delay 0
clock rate 64000
!
interface Serial0/0.1 point-to-point
ip address 200.3.3.1 255.255.255.0
ip router isis
frame-relay interface-dlci 103 //CLNS映射
!
interface Serial0/0.2 point-to-point
ip address 200.4.4.1 255.255.255.0
ip router isis
frame-relay interface-dlci 104
!
interface Serial0/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/3
no ip address
shutdown
serial restart-delay 0
!
router isis
net 49.0001.1111.1111.1111.00
!
no ip http server
no ip http secure-server
!
control-plane
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
!
end
R3配置：
R3#sh run
Building configuration...
Current configuration : 1028 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R3
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!
interface Loopback0
ip address 3.3.3.3 255.255.255.0
ip router isis
!
interface Serial0/0
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/1
no ip address
encapsulation frame-relay
serial restart-delay 0
clock rate 64000
!
interface Serial0/1.1 point-to-point
ip address 200.3.3.3 255.255.255.0
ip router isis
frame-relay interface-dlci 301
!
interface Serial0/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/3
no ip address
shutdown
serial restart-delay 0
!
router isis
net 49.0001.3333.3333.3333.00
!
no ip http server
no ip http secure-server
!
control-plane
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
!
end
R4配置:
R4#sh run
Building configuration...
Current configuration : 1028 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R4
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!
interface Loopback0
ip address 4.4.4.4 255.255.255.0
ip router isis
!
interface Serial0/0
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial0/2
no ip address
encapsulation frame-relay
serial restart-delay 0
clock rate 64000
!
interface Serial0/2.1 point-to-point
ip address 200.4.4.4 255.255.255.0
ip router isis
frame-relay interface-dlci 401
!
interface Serial0/3
no ip address
shutdown
serial restart-delay 0
!
router isis
net 49.0001.4444.4444.4444.00
!
no ip http server
no ip http secure-server
!
control-plane
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
!
end
驗證實驗：查看路由表
R1# sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
C 200.4.4.0/24 is directly connected, Serial0/0.2
1.0.0.0/24 is subnetted, 1 subnets
C 1.1.1.0 is directly connected, Loopback0
3.0.0.0/24 is subnetted, 1 subnets
i L1 3.3.3.0 [115/20] via 200.3.3.3, Serial0/0.1
4.0.0.0/24 is subnetted, 1 subnets
i L1 4.4.4.0 [115/20] via 200.4.4.4, Serial0/0.2
C 200.3.3.0/24 is directly connected, Serial0/0.1
R3# sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
i L1 200.4.4.0/24 [115/20] via 200.3.3.1, Serial0/1.1
1.0.0.0/24 is subnetted, 1 subnets
i L1 1.1.1.0 [115/20] via 200.3.3.1, Serial0/1.1
3.0.0.0/24 is subnetted, 1 subnets
C 3.3.3.0 is directly connected, Loopback0
4.0.0.0/24 is subnetted, 1 subnets
i L1 4.4.4.0 [115/30] via 200.3.3.1, Serial0/1.1
C 200.3.3.0/24 is directly connected, Serial0/1.1
R4# sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
C 200.4.4.0/24 is directly connected, Serial0/2.1
1.0.0.0/24 is subnetted, 1 subnets
i L1 1.1.1.0 [115/20] via 200.4.4.1, Serial0/2.1
3.0.0.0/24 is subnetted, 1 subnets
i L1 3.3.3.0 [115/30] via 200.4.4.1, Serial0/2.1
4.0.0.0/24 is subnetted, 1 subnets
C 4.4.4.0 is directly connected, Loopback0
i L1 200.3.3.0/24 [115/20] via 200.4.4.1, Serial0/2.1
全網路由都有，實驗完成：
總結1.在點到點子接口下，命令”frame-relay interface-dlci” 同時啓動 IP 映射和CNLS 映射，所以不需要額外的 CLSN映
射
2.點到點子接口的映射根本沒有區分 IP 或者CLNS，所以命令“frame-relay interface-dlci”同時啓動IP 映
射和CNLS 映射