EIGRP Authentication

  

LAB Step :

1. setup interface ip address

2. setup EIGRP AS number , and network address

3. in the interface , setup EIGRP authentication mode : MD5 , and setup the keystring

4.create the key chain name : my_keychain

5.setup key-string : mykey

=================================
hostname R1
!
key chain my_keychain
 key 1
   key-string mykey
!
interface Loopback0
 ip address 10.1.1.1 255.255.255.255
!
interface Loopback1
 ip address 10.2.2.2 255.255.255.255
!
interface Loopback2
 ip address 10.3.3.3 255.255.255.255
!
interface Serial1/0
 ip address 172.16.1.1 255.255.255.252
 ip authentication mode eigrp 10 md5
 ip authentication key-chain eigrp 10 my_keychain
!
router eigrp 10
 network 10.1.1.1 0.0.0.0
 network 10.2.2.2 0.0.0.0
 network 10.3.3.3 0.0.0.0
 network 172.16.1.0 0.0.0.3
 no auto-summary
!
=================================


=================================
hostname R2
!
key chain my_keychain
 key 1
   key-string mykey
!
interface Loopback0
 ip address 10.4.4.4 255.255.255.255
!
interface Loopback1
 ip address 10.5.5.5 255.255.255.255
!
interface Loopback6
 ip address 10.6.6.6 255.255.255.255
!
interface Serial1/0
 ip address 172.16.1.2 255.255.255.252
 ip authentication mode eigrp 10 md5
 ip authentication key-chain eigrp 10 my_keychain
!
router eigrp 10
 network 10.4.4.4 0.0.0.0
 network 10.5.5.5 0.0.0.0
 network 10.6.6.6 0.0.0.0
 network 172.16.1.0 0.0.0.3
 no auto-summary
!
=================================