EIGRP Key Chain Practice Example



AUSTIN ROUTER
Austin>enable
Austin#configure terminal
Austin(config)#interface serial 0/0/0
Austin(config-if)#ip address 172.16.20.1 255.255.255.0
Austin(config-if)#ip authentication mode eigrp 100 md5
Austin(config-if)#ip authentication key-chain eigrp 100 SURAJ (Enables authentication of EIGRP packets. SURAJ is the name of the key chain)
Austin(config-if)#no shutdown
Austin(config-if)#interface fastethernet 0/1
Austin(config-if)#ip address 172.16.10.1 255.255.255.0
Austin(config-if)#no shutdown
Austin(config-if)#router eigrp 100
Austin(config-router)#no auto-summary
Austin(config-router)#network 172.16.0.0
Austin(config-router)#key chain SURAJ (Identifies a key chain name, which must match the name configured in interface configuration mode.)
Austin(config-keychain)#key 1 (Identifies the key number.)
Austin(config-keychain-key)#key-string tower (Identifies the key string.)
Austin(config-keychain-key)#exit
Austin(config)#exit

HOUSTON ROUTER
Houston>enable
Houston#configure terminal
Houston(config)#interface serial 0/0/1
Houston(config-if)#ip address 172.16.20.2 255.255.255.0
Houston(config-if)#ip authentication mode eigrp 100 md5
Houston(config-if)#ip authentication key-chain eigrp 100 eddie
Houston(config-if)#clock rate 56000
Houston(config-if)#no shutdown
Houston(config-if)#interface fastethernet 0/1
Houston(config-if)#ip address 172.16.30.1 255.255.255.0
Houston(config-if)#no shutdown
Houston(config-if)#router eigrp 100
Houston(config-router)#no auto-summary
Houston(config-router)#network 172.16.0.0
Houston(config-router)#key chain eddie
Houston(config-keychain)#key 1
Houston(config-keychain-key)#key-string tower
Houston(config-keychain-key)#exit

Houston(config)#exit

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