1、拓撲圖
2、配置詳細信息
R1#show run
Building configuration...
Current configuration : 646 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R1
!
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interface Loopback0
ip address 1.1.1.1 255.255.255.0
!
interface FastEthernet0/0
ip address 12.12.12.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!
interface Vlan1
no ip address
shutdown
!
ip classless
ip route 3.3.3.0 255.255.255.0 23.23.23.3
ip route 23.23.23.0 255.255.255.0 12.12.12.2
ip route 2.2.2.0 255.255.255.0 12.12.12.2
!
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line con 0
line vty 0 4
login
!
!
!
end
R1#
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R2#show run
Building configuration...
Current configuration : 612 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R2
!
!
!
!
!
!
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interface Loopback0
ip address 2.2.2.2 255.255.255.0
!
interface FastEthernet0/0
ip address 12.12.12.2 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 23.23.23.1 255.255.255.0
duplex auto
speed auto
!
interface Vlan1
no ip address
shutdown
!
ip classless
ip route 1.1.1.0 255.255.255.0 12.12.12.1
ip route 3.3.3.0 255.255.255.0 23.23.23.3
!
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line con 0
line vty 0 4
login
!
!
!
end
R2#
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R3#show run
Building configuration...
Current configuration : 646 bytes
!
version 12.4
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname R3
!
!
!
!
!
!
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!
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interface Loopback0
ip address 3.3.3.3 255.255.255.0
!
interface FastEthernet0/0
no ip address
duplex auto
speed auto
shutdown
!
interface FastEthernet0/1
ip address 23.23.23.3 255.255.255.0
duplex auto
speed auto
!
interface Vlan1
no ip address
shutdown
!
ip classless
ip route 1.1.1.0 255.255.255.0 12.12.12.1
ip route 12.12.12.0 255.255.255.0 23.23.23.1
ip route 2.2.2.0 255.255.255.0 23.23.23.1
!
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line con 0
line vty 0 4
login
!
!
!
end
R3#
3、實驗目的
R1#ping 3.3.3.3
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 3.3.3.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 50/60/63 ms
4、遞歸路由的作用
在網絡拓撲發生改變的時候，可以減少靜態路由更改的工作量。