CCNA LAB:EIGRP CONFIGURATION with MD5 AUTHENTICATION

EIGRP MD 5 Authentication

To specify MD5 authentication, the command is:

router(config-if)#ip authentication mode eigrp autonomous-system md5

Once MD5 is specified, the command to set the key is:

router(config-if)#ip authentication key-chain eigrp autonomous-system chain-name

Finally, the key-chain is configured and the key is specified:

router(config-if)#key chain chain-name

router(config-if)#key key-id

router(config-keychain-key)#key-string key

RTA ROUTER

Router>enable

Router# configure terminal

Router(config)#hostname RTA

RTA(config)#interface serial 0/0 

RTA(config-if)#ip address 192.168.10.1 255.255.255.252

RTA(config-if)#clock rate 64000

RTA(config-if)#ip authentication mode eigrp 65 md5

RTA(config-if)#ip authentication key-chain eigrp 65 thewayofccie

RTA(config-if)#no shutdown

RTA(config-if)#exit

RTA(config)#key chain thewayofccie

RTA(config-keychain)#key 1

RTA(config-keychain-key)#key-string mykey

RTA(config-keychain-key)#exit

RTA(config-keychain)#exit

RTA(config)#interface fastethernet 0/0

RTA(config-if)#ip address 192.168.20.1 255.255.255.0

RTA(config-if)#no shutdown

RTA(config-if)#exit

RTA(config)#router eigrp 65

RTA(config-router)#network 192.168.10.0

RTA(config-router)#network 192.168.20.0

RTA(config-if)#no auto-summary

RTA(config-if)#exit

RTA(config)#exit

RTA# copy running-config startup-config

RTB ROUTER

Router>enable

Router# configure terminal

Router(config)#hostname RTB

RTB(config)#interface serial 0/0

RTB(config-if)#ip address 192.168.10.2 255.255.255.252

RTB(config-if)#ip authentication mode eigrp 65 md5

RTB(config-if)#ip authentication key-chain eigrp 65 thewayofccie

RTB(config-if)#no shutdown

RTB(config-if)#exit

RTB(config)#key chain thewayofccie

RTB(config-keychain)#key 1

RTB(config-keychain-key)#key-string mykey

RTB(config-keychain-key)#exit

RTB(config-keychain)#exit

RTB(config)#interface fastethernet 0/0

RTB(config-if)#ip address 192.168.30.1 255.255.255.0

RTB(config-if)#no shutdown

RTB(config-if)#exit

RTB(config)#router eigrp 65

RTB(config-router)#network 192.168.10.0

RTB(config-router)#network 192.168.30.0

RTB(config-if)#no auto-summary

RTB(config-if)#exit

RTB(config)#exit

RTB# copy running-config startup-config