环境:三台路由器通过串行接口相连。
要求:配置R2为帧中继交换机,使R1和R3运行在帧中继网络上;
在R1和R3分别启用loop0口,并且运行EIGRP路由选择协议。

步骤一、帧中继的配置
fr-sw的配置:
fr-sw(config)#frame-relay switching 启用帧中继交换机
fr-sw(config)#interface serial0
fr-sw(config-if)#clock rate 64000
fr-sw(config-if)#encapsulation frame-relay 接口封装帧中继
fr-sw(config-if)#frame-relay intf-type dce 类型DCE
fr-sw(config-if)#frame-relay route 301 interface s1 103 指定路由
fr-sw(config-if)#no shutdown
fr-sw(config-if)#interface serial1
fr-sw(config-if)#encapsulation frame-relay
fr-sw(config-if)#clock rate 64000
fr-sw(config-if)#frame-relay intf-type dce
fr-sw(config-if)#frame-relay route 103 inter s0 301
fr-sw(config-if)#no shutdown

r1的配置:
r1(config)#interface serial0
r1(config-if)#encapsulation frame-relay 接口封装帧中继
r1(config-if)#ip address 30.1.1.1 255.255.255.0
r1(config-if)# frame-relay map ip 30.1.1.3 103 broadcast 指定静态映射
r1(config-if)#no frame-relay inverse-arp 关闭逆向ARP
r1(config-if)#no shutdown
r3的配置:
r3(config)#interface s1
r3(config-if)#encapsulation frame-relay
r3(config-if)#ip add 30.1.1.3 255.255.255.0
r3(config-if)# frame-relay map ip 30.1.1.1 301 broadcast
r3(config-if)#no frame-relay inverse-arp
r3(config-if)#no shutdown
步骤二、查看帧中继的状态及联通性测试
r3的查看:
r3#show frame-relay pvc 显示永久虚电路
PVC Statistics for interface Serial1 (Frame Relay DTE)
Active Inactive Deleted Static
Local 1 0 0 0
Switched 0 0 0 0
Unused 0 0 0 0
DLCI = 301, DLCI USAGE = LOCAL, PVC STATUS = ACTIVE, INTERFACE = Serial1
r3#show interface s1 显示接口封装及状态
Serial1 is up, line protocol is up
Hardware is HD64570
Internet address is 30.1.1.3/24
MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation FRAME-RELAY, loopback not set
r3#show frame-relay map 显示映射
Serial1 (up): ip 30.1.1.1 dlci 301(0x12D,0x48D0), static,
broadcast,, status defined, active
测试帧中继连通性:
r1#ping 30.1.1.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 30.1.1.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 60/60/60 ms

步骤三、启用回环口,配置EIGRP路由
r1(config)#interface loopback 0
r1(config-if)#ip address 10.1.1.1 255.255.255.0
r1(config-if)#
r1(config-if)#`router eigrp 100 启用路由协议
r1(config-router)#network 10.1.1.0 0.0.0.255 发布直联网段
r1(config-router)#network 30.1.1.0 0.0.0.255
r1(config-router)#no auto-summary 关闭自动汇总
r1(config-router)#
r3(config)#interface loopback 0
r3(config-if)#ip address 20.1.1.1 255.255.255.0
r3(config-if)#router eigrp 100
r3(config-router)#network 20.1.1.0 0.0.0.255
r3(config-router)#network 30.1.1.0 0.0.0.255
r3(config-router)#no auto-summary
r3(config-router)#
步骤四、显示学习到的路由
r1#show ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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
20.0.0.0/24 is subnetted, 1 subnets
D 20.1.1.0 [90/2297856] via 30.1.1.3, 00:00:38, Serial0
10.0.0.0/24 is subnetted, 1 subnets
C 10.1.1.0 is directly connected, Loopback0
30.0.0.0/24 is subnetted, 1 subnets
C 30.1.1.0 is directly connected, Serial0
r3#show ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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
20.0.0.0/24 is subnetted, 1 subnets
C 20.1.1.0 is directly connected, Loopback0
10.0.0.0/24 is subnetted, 1 subnets
D 10.1.1.0 [90/2297856] via 30.1.1.1, 00:00:00, Serial1
30.0.0.0/24 is subnetted, 1 subnets
C 30.1.1.0 is directly connected, Serial1
步骤五、显示当前配置
fr-sw的当前配置:
fr-sw#show running-config
hostname fr-sw
!
no ip domain-lookup
!
frame-relay switching
!
interface Serial0
no ip address
encapsulation frame-relay
clockrate 64000
frame-relay intf-type dce
frame-relay route 301 interface Serial1 103
!
interface Serial1
no ip address
encapsulation frame-relay
clockrate 64000
frame-relay intf-type dce
frame-relay route 103 interface Serial0 301
!
end
r1的当前配置:
r1#show running-config
!
hostname r1
!
no ip domain-lookup
!
interface Loopback0
ip address 10.1.1.1 255.255.255.0
!
interface Serial0
ip address 30.1.1.1 255.255.255.0
encapsulation frame-relay
frame-relay map ip 30.1.1.3 103 broadcast
no frame-relay inverse-arp
!
router eigrp 100
network 10.1.1.0 0.0.0.255
network 30.1.1.0 0.0.0.255
no auto-summary
end
r3的当前配置:
r3#show running-config
hostname r3
!
interface Loopback0
ip address 20.1.1.1 255.255.255.0
!
interface Serial1
ip address 30.1.1.3 255.255.255.0
encapsulation frame-relay
frame-relay map ip 30.1.1.1 301 broadcast
no frame-relay inverse-arp
!
router eigrp 100
network 20.1.1.0 0.0.0.255
network 30.1.1.0 0.0.0.255
no auto-summary
!
end