1、R1-configinterface Serial0/0ip address 12.1.1.1 255.255.255.0interface Ethernet1/0ip address 12.12.12.1 255.255.255.0 router eigrp 90offset-list 1 in 486400 Ethernet1/0network 12.1.1.1 0.0.0.0network 12.12.12.1 0.0.0.0auto-summaryaccess-list 1 permit 3.3.3.3R2-configkey chain r2key 1key-string cisco
2、interface Serial0/0ip address 12.1.1.2 255.255.255.0shutdowninterface Serial0/1ip address 21.1.1.1 255.255.255.0ip authentication mode eigrp 90 md5ip authentication key-chain eigrp 90 r2interface Ethernet1/0ip address 12.12.12.2 255.255.255.0ip summary-address eigrp 90 15.0.0.0 255.255.248.0 5 leak-
3、map 1router eigrp 90network 12.1.1.2 0.0.0.0network 12.12.12.2 0.0.0.0network 21.1.1.1 0.0.0.0no auto-summaryaccess-list 1 permit 15.0.4.0 0.0.0.255route-map 1 permit 10match ip address 1R3-configinterface Loopback0ip address 3.3.3.3 255.255.255.255interface Loopback1ip address 15.0.1.1 255.255.255.
4、0ip address 15.0.2.1 255.255.255.0 secondaryip address 15.0.3.1 255.255.255.0 secondaryip address 15.0.4.1 255.255.255.0 secondaryinterface Serial0/1ip address 21.1.1.2 255.255.255.0ip authentication mode eigrp 90 md5ip authentication key-chain eigrp 90 r3router eigrp 90network 3.3.3.3 0.0.0.0network 15.0.0.0 0.0.255.255network 21.1.1.2 0.0.0.0no auto-summary
