實驗15：RIPv2 手工匯總<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

1.實驗目的

通過本實驗可以掌握：

（1）RIPv2 路由的手工匯總

（2）RIPv2 不支持CIDR 匯總

（3）RIPv2 可以傳遞CIDR 匯總

2.拓撲結構

實驗拓撲如圖 所示。

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3.實驗步驟

路由器R1、R2 和R0的配置如下 Router>en Router#conf t Enter configuration commands, one per line.? End with CNTL/Z. Router(config)#ho r0 r0(config)#no ip do loo r0(config)#lin? c 0 r0(config-line)#logg s r0(config-line)#exec-t 00 r0(config-line)#exit r0(config)#int loo 1 r0(config-if)#ip add *Mar? 1 00:04:20.387: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback1, changed state to up r0(config-if)#ip add 192.168.96.4 255.255.255.0 r0(config-if)#int loo 2 r0(config-if)#ip add 1 *Mar? 1 00:04:38.139: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback2, changed state to up r0(config-if)#ip add 192.168.97.4 255.255.255.0 r0(config-if)#int loo? 3 r0(config-if)#ip add 1 *Mar? 1 00:04:54.815: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback3, changed state to up r0(config-if)#ip add 192.168.98.4 255.255.255.0 r0(config-if)#int loo 4 r0(config-if)#ip add 19 *Mar? 1 00:05:07.659: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback4, changed state to up r0(config-if)#ip add 192.168.99.4 255.255.255.0 r0(config-if)#int s0/0 r0(config-if)#ip add 172.16.1.1 255.255.255.0 r0(config-if)#no sh r0(config-if)# *Mar? 1 00:05:38.623: %LINK-3-UPDOWN: Interface Serial0/0, changed state to up *Mar? 1 00:05:39.623: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed state to up r0(config-if)#do sh ip int b Interface????????????????? IP-Address????? OK? Method Status? ??????????????Protocol Serial0/0????????????????? 172.16.1.1????? YES manual up??????????????????? up????? Serial0/1????????????????? unassigned????? YES unset? administratively down down??? Serial0/2????????????????? unassigned????? YES unset? administratively down down??? Serial0/3????????????????? unassigned????? YES unset? administratively down down??? Loopback1????????????????? 192.168.96.4??? YES manual up??????????????????? up????? Loopback2????????????????? 192.168.97.4??? YES manual up??????? ????????????up????? Loopback3????????????????? 192.168.98.4??? YES manual up??????????????????? up????? Loopback4????????????????? 192.168.99.4??? YES manual up??????????????????? up????? r0(config-if)#do ping 172.16.1.2

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Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 172.16.1.2, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 20/36/64 ms r0(config-if)#exit r0(config)#router rip r0(config-router)#ver 2 r0(config-router)#no auto r0(config-router)#net 172.16.1.0 r0(config-router)#do sh ip route Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP ?????? D - EIGRP, EX - EIGRP external, O - <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />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

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Gateway of last resort is not set

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???? 4.0.0.0/22 is subnetted, 1 subnets R?????? 4.4.0.0 [120/2] via 172.16.1.2, 00:00:04, Serial0/0 ???? 172.16.0.0/24 is subnetted, 2 subnets C?????? 172.16.1.0 is directly connected, Serial0/0 R?????? 172.16.2.0 [120/1] via 172.16.1.2, 00:00:04, Serial0/0 C??? 192.168.98.0/24 is directly connected, Loopback3 C??? 192.168.99.0/24 is directly connected, Loopback4 C??? 192.168.96.0/24 is directly connected, Loopback1 C??? 192.168.97.0/24 is directly connected, Loopback2 r0(config-router)#do 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

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Gateway of last resort is not set

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???? 4.0.0.0/22 is subnetted, 1 subnets R?????? 4.4.0.0 [120/2] via 172.16.1.2, 00:00:15, Serial0/0 ???? 172.16.0.0/24 is subnetted, 2 subnets C?????? 172.16.1.0 is directly connected, Serial0/0 R?????? 172.16.2.0 [120/1] via 172.16.1.2, 00:00:15, Serial0/0 C??? 192.168.98.0/24 is directly connected, Loopback3 C??? 192.168.99.0/24 is directly connected, Loopback4 C??? 192.168.96.0/24 is directly connected, Loopback1 C??? 192.168.97.0/24 is directly connected, Loopback2 r0(config-router)#net 192.168.96.0???? r0(config-router)#net 192.168.97.0 r0(config-router)#net 192.168.98.0 r0(config-router)#net 192.168.99.0 r0(config-router)#exit r0(config)#int s0/0 r0(config-if)#ip summary-address rip 192.168.96.0 255.255.252.0 ?Summary mask must be greater or equal to major net //顯示的提示信息表明匯總后的掩碼長度必須要大于或等于主類網絡的掩碼程度，因為

“22<24”,所以不能匯總。所以RIPv2 不支持CIDR 匯總

r0(config-if)#exit???????????????????????????????????????????? r0(config)#router rip r0(config-router)#ver 2 r0(config-router)#no net 192.168.99.0????????????????????????????? r0(config-router)#no net 192.168.98.0 r0(config-router)#no net 192.168.97.0 r0(config-router)#no net 192.168.96.0 r0(config-router)#exit 解決方案如下

用靜態路由發布被匯總的路由，再將靜態路由重分布到RIP 網絡中

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r0(config)#ip route 192.168.96.0 255.255.252.0 null0

r0(config)#router rip r0(config-router)#ver 2 r0(config-router)#redistribute static //態路由重分布到RIP r0(config-router)#do 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

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Gateway of last resort is not set

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???? 4.0.0.0/22 is subnetted, 1 subnets R?????? 4.4.0.0 [120/2] via 172.16.1.2, 00:00:01, Serial0/0 ???? 172.16.0.0/24 is subnetted, 2 subnets C?????? 172.16.1.0 is directly connected, Serial0/0 R?????? 172.16.2.0 [120/1] via 172.16.1.2, 00:00:01, Serial0/0 C??? 192.168.98.0/24 is directly connected, Loopback3 C??? 192.168.99.0/24 is directly connected, Loopback4 C??? 192.168.96.0/24 is directly connected, Loopback1 C??? 192.168.97.0/24 is directly connected, Loopback2 S??? 192.168.96.0/22 is directly connected, Null0 r0(config-router)#do wr Building configuration... [OK] r0(c

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changed state to down Router>en Router#conf t Enter configuration commands, one per line.? End with CNTL/Z. Router(config)#ho r1 r1(config)#no ip do loo r1(config)#lin? c 0 r1(config-line)#logg s r1(config-line)#exec-t 00 r1(config-line)#exit r1(config)#int s0/0 r1(config-if)#ip add 172.16.1.2 255.255.255.0 r1(config-if)#no sh r1(config-if)#exit r1(config)#int s *Mar? 1 00:02:07.587: %LINK-3-UPDOWN: Interface Serial0/0, changed state to up *Mar? 1 00:02:08.587: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed state to up r1(config)#int s0/1 r1(config-if)#ip add 172.16.2.1 255.255.255.0 r1(config-if)#clo r 64000 r1(config-if)#no sh r1(config-if)# *Mar? 1 00:02:27.907: %LINK-3-UPDOWN: Interface Serial0/1, changed state to up *Mar? 1 00:02:28.907: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/1, changed state to up r1(config-if)# *Mar? 1 00:02:33.527: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed state to down *Mar? 1 00:02:53.555: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/1, changed state to down *Mar? 1 00:04:13.555: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/1, changed state to up *Mar? 1 00:05:53.511: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed state to up r1(config-if)#exit r1(config)#router rip r1(config-router)#ve 2 r1(config-router)#no auto r1(config-router)#net 172.16.1.0 r1(config-router)#net 172.16.2.0 r1(config-router)#do 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

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Gateway of last resort is not set

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???? 4.0.0.0/22 is subnetted, 1 subnets R?????? 4.4.0.0 [120/1] via 172.16.2.2, 00:00:21, Serial0/1 ???? 172.16.0.0/24 is subnetted, 2 subnets C?????? 172.16.1.0 is directly connected, Serial0/0 C?????? 172.16.2.0 is directly connected, Serial0/1 r1(config-router)#do 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

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Gateway of last resort is not set

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???? 4.0.0.0/22 is subnetted, 1 subnets R?????? 4.4.0.0 [120/1] via 172.16.2.2, 00:00:05, Serial0/1 ???? 172.16.0.0/24 is subnetted, 2 subnets C?????? 172.16.1.0 is directly connected, Serial0/0 C?????? 172.16.2.0 is directly connected, Serial0/1 R??? 192.168.96.0/22 [120/1] via 172.16.1.1, 00:00:22, Serial0/0 r1(config-router)#do wr Building configuration... [OK] r1(config-router)#

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Router> Router>EN Router#CONF T Enter configuration commands, one per line.? End with CNTL/Z. Router(config)#ho r2 r2(config)#no ip domain loo r2(config)#lin c 0 r2(config-line)#logg s r2(config-line)#exec-t 00 r2(config-line)#exit r2(config)#int loo 1 r2(config-if)#ip add 19 *Mar? 1 00:02:36.447: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback1, changed state to up r2(config-if)#ip add 4.4.0.4 255.255.255.0 r2(config-if)#int loo 2 r2(config-if)#ip addd *Mar? 1 00:02:53.227: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback2, changed state to up r2(config-if)#ip add 4.4.1.4 255.255.255.0 r2(config-if)#int loo 3 r2(config-if)# *Mar? 1 00:03:14.543: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback3, changed state to up r2(config-if)#ip add 4.4.2.4 255.255.255.0 r2(config-if)#int loo 4 r2(config-if)#ip add *Mar? 1 00:03:32.179: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback4, changed state to up r2(config-if)#ip add 4.4.3.4 255.255.255.0 r2(config-if)#exit r2(config)#int s0/0 r2(config-if)#ip add 172.16.2.2? 255.255.255.0 r2(config-if)#no sh r2(config-if)# *Mar? 1 00:04:12.939: %LINK-3-UPDOWN: Interface Serial0/0, changed state to up *Mar? 1 00:04:13.939: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed state to up r2(config-if)#exit r2(config)#router rip r2(config-router)#net 4.0.0.0 r2(config-router)#net 172.16.2.0 r2(config-router)#net 4.0.0.0?? r2(config-router)#no net 4.0.0.0 r2(config-router)#no net 172.16.2.0 r2(config-router)#v 2 % Ambiguous command:? "v 2" r2(config-router)#ver 2 r2(config-router)#no auto r2(config-router)#net 172.16.2.0 r2(config-router)#net 4.0.0.0 r2(config-router)#exit r2(config)#int s0/0 r2(config-if)#ip summary-address rip 4.4.0.0 255.255.252.0 r2(config-if)#do 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

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Gateway of last resort is not set

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???? 4.0.0.0/24 is subnetted, 4 subnets C?????? 4.4.0.0 is directly connected, Loopback1 C?????? 4.4.1.0 is directly connected, Loopback2 C?????? 4.4.2.0 is directly connected, Loopback3 C?????? 4.4.3.0 is directly connected, Loopback4 ???? 172.16.0.0/24 is subnetted, 1 subnets C?????? 172.16.2.0 is directly connected, Serial0/0 r2(config-if)# r2(config-if)# r2(config-if)#do 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

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Gateway of last resort is not set

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???? 4.0.0.0/24 is subnetted, 4 subnets C?????? 4.4.0.0 is directly connected, Loopback1 C?????? 4.4.1.0 is directly connected, Loopback2 C?????? 4.4.2.0 is directly connected, Loopback3 C?????? 4.4.3.0 is directly connected, Loopback4 ???? 172.16.0.0/24 is subnetted, 2 subnets R?????? 172.16.1.0 [120/1] via 172.16.2.1, 00:00:10, Serial0/0 C?????? 172.16.2.0 is directly connected, Serial0/0 R??? 192.168.96.0/22 [120/2] via 172.16.2.1, 00:00:10, Serial0/0 r2(config-if)#do ping 192.168.96.4

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Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 192.168.96.4, timeout is 2 seconds: !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 24/40/64 ms r2(config-if)#do wr Building configuration... [OK] r2(config-if)# 通過輸出不難看出RIPv2 是可以傳遞CIDR 匯總信息的。

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轉載于:https://blog.51cto.com/gauyanm/235791

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