RIP不同版本之间的相互通信

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R1配置：
interface Loopback0
ip address 1.1.1.1 255.255.255.0
interface Serial1/2
ip address 12.0.0.1 255.255.255.0
router rip
version 2
network 1.0.0.0
network 12.0.0.0

R2配置：
Router>EN
Router#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#host R2
R2(config)#int s2/1
R2(config-if)#ip add 12.0.0.2 255.255.255.0
Bad mask /24 for address 12.0.0.2
R2(config-if)#ip subnet-zero
R2(config)#int s2/1
R2(config-if)#ip add 12.0.0.2 255.255.255.0
R2(config-if)#no shut
R2(config-if)#int s2/3
R2(config-if)#ip add 23.0.0.2 255.255.255.0
R2(config-if)#no shut
R2(config-if)#
R2#
R2#conf t
R2(config)#router rip
R2(config-router)#ve 2
R2(config-router)#net 12.0.0.0
R2(config-router)#net 23.0.0.0
R2(config-router)#
R2#sh 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, * - candidate default
       U - per-user static route, o - ODR
Gateway of last resort is not set
R    1.0.0.0/8 [120/1] via 12.0.0.1, 00:00:26, Serial2/1
R    3.0.0.0/8 [120/1] via 23.0.0.3, 00:00:33, Serial2/3
     12.0.0.0/24 is subnetted, 1 subnets
C       12.0.0.0 is directly connected, Serial2/1
     23.0.0.0/24 is subnetted, 1 subnets
C       23.0.0.0 is directly connected, Serial2/3
R2#

R3配置：
Router>EN
Router#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#ost R3
               ^
% Invalid input detected at '^' marker.
Router(config)#host R3
R3(config)#ints3/2
              ^
% Invalid input detected at '^' marker.
R3(config)#int s3/2
R3(config-if)#ip add 23.0.0.3 255.255.255.0
Bad mask /24 for address 23.0.0.3
R3(config-if)#ip subnet-zero
R3(config)#int s3/2
R3(config-if)#ip add 23.0.0.3 255.255.255.0
R3(config-if)#no shut
R3(config-if)#int loopback1
R3(config-if)#
%LINK-3-UPDOWN: Interface Serial3/2, changed state to upip
%LINEPROTO-5-UPDOWN: Line protocol on Interface Serial3/2, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback1, changed state to upad
d 3.3.3.3 255.255.255.0
R3(config-if)#no shut
R3(config)#router rip
R3(config-router)#ve 2
R3(config-router)#net 23.0.0.0
R3(config-router)#net 3.0.0.0
R3(config-router)#
R3(config-router)#distribute-list 1 in s3/2
R3(config-router)#exit
R3(config)#no au
R3(config)#
R3#sh 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, * - candidate default
       U - per-user static route, o - ODR
Gateway of last resort is not set
R    1.0.0.0/8 [120/2] via 23.0.0.2, 00:00:08, Serial3/2
     3.0.0.0/24 is subnetted, 1 subnets
C       3.3.3.0 is directly connected, Loopback1
R    12.0.0.0/8 [120/1] via 23.0.0.2, 00:00:09, Serial3/2
     23.0.0.0/24 is subnetted, 1 subnets
C       23.0.0.0 is directly connected, Serial3/2
R3#ping 1.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 188/506/1204 ms
R3#ping 1.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round-trip min/avg/max = 136/502/1116 ms


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