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 à 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 à 接口封装帧中继 fr-sw(config-if)# frame-relay intf-type dce à 类型DCE fr-sw(config-if)# frame-relay route 301 interface s1 103 à 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 à 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 à 指定静态映射 r1(config-if)# no frame-relay inverse-arp à 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 à 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 à 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 à 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 à 启用路由协议 r1(config-router)# network 10.1.1.0 0.0.0.255 à 发布直联网段 r1(config-router)# network 30.1.1.0 0.0.0.255 r1(config-router)# no auto-summary à 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 |
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