實驗拓撲
R1：
spanning-tree mode pvst
!
!
!
!
!
key chain MD5
key 1
key-string cisco
!
interface FastEthernet0/0
ip address 172.16.1.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!
interface Serial0/0/0
bandwidth 64
ip address 172.16.3.1 255.255.255.252
ip hello-interval eigrp 1 10
ip authentication mode eigrp 1 md5
ip authentication key-chain eigrp 1 cisco
clock rate 2000000
!
interface Serial0/0/1
ip address 192.168.10.5 255.255.255.252
clock rate 2000000
!
interface Vlan1
no ip address
shutdown
!
router eigrp 1
passive-interface FastEthernet0/0
network 172.16.0.0
network 192.168.10.0
no auto-summary
!
ip classless
!
ip flow-export version 9
R2：
spanning-tree mode pvst
!
!
!
!
!
!
interface FastEthernet0/0
ip address 192.168.1.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 192.168.2.1 255.255.255.0
duplex auto
speed auto
!
interface Serial0/0/0
ip address 192.168.10.10 255.255.255.252
ip summary-address eigrp 1 192.168.0.0 255.255.252.0 5
!
interface Serial0/0/1
ip address 192.168.10.6 255.255.255.252
ip summary-address eigrp 1 192.168.0.0 255.255.252.0 5
!
interface Vlan1
no ip address
shutdown
!
router eigrp 1
eigrp router-id 2.2.2.2
redistribute static
passive-interface FastEthernet0/0
network 192.168.10.0
network 192.168.1.0
network 192.168.2.0
no auto-summary
!
ip classless
ip route 0.0.0.0 0.0.0.0 FastEthernet0/0
!
ip flow-export version 9
R3：
spanning-tree mode pvst
!
!
!
!
!
key chain MD5
key 1
key-string cisco
!
interface FastEthernet0/0
ip address 172.16.2.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
ip address 209.165.200.1 255.255.255.0
duplex auto
speed auto
!
interface Serial0/0/0
bandwidth 64
ip address 172.16.3.2 255.255.255.252
ip hello-interval eigrp 1 10
ip authentication mode eigrp 1 md5
ip authentication key-chain eigrp 1 cisco
!
interface Serial0/0/1
ip address 192.168.10.9 255.255.255.252
clock rate 2000000
!
interface Vlan1
no ip address
shutdown
!
router eigrp 1
passive-interface FastEthernet0/0
network 172.16.0.0
network 192.168.10.0
no auto-summary
!
ip classless
ip route 0.0.0.0 0.0.0.0 FastEthernet0/1
!
ip flow-export version 9