EIGRP Authentication PPPoFR Virtual-template

Example of EIGRP authentication by using different passwords for each neighbor in frame relay network.

R1 - R2  
using md5 and CISCO12 as a password.
R1 - R3
using md5 and CISCO13 as a password.
Note
We are not allowed to use sub-interface at R1

Configuration

R1

key chain MY_KEY13
 key 1
   key-string CISCO13
!
key chain MY_KEY12
 key 1
   key-string CISCO12


interface Serial0/0
 ip address 192.168.1.1 255.255.255.0
 encapsulation frame-relay
 clock rate 2000000
 frame-relay interface-dlci 102 ppp Virtual-Template1
 frame-relay interface-dlci 103 ppp Virtual-Template2
 frame-relay lmi-type ansi
!

interface Virtual-Template1
 ip address 192.168.1.1 255.255.255.0
 ip authentication mode eigrp 1 md5
 ip authentication key-chain eigrp 1 MY_KEY12
!
interface Virtual-Template2
 ip address 192.168.1.1 255.255.255.0
 ip authentication mode eigrp 1 md5
 ip authentication key-chain eigrp 1 MY_KEY13
!
router eigrp 1
 network 0.0.0.0
 auto-summary

 

R2

key chain MY_KEY

 key 1

   key-string CISCO12

interface Serial0/0

 ip address 192.168.1.2 255.255.255.0

 encapsulation frame-relay

 clock rate 2000000

 frame-relay interface-dlci 201 ppp Virtual-Template1

!

!

interface Virtual-Template1

 ip address 192.168.1.2 255.255.255.0

 ip authentication mode eigrp 1 md5

 ip authentication key-chain eigrp 1 MY_KEY

!

router eigrp 1

 network 0.0.0.0

 auto-summary

R3

key chain MY_KEY

 key 1

   key-string CISCO13

!

!

!

interface Serial0/0

 ip address 192.168.1.3 255.255.255.0

 encapsulation frame-relay

 clock rate 2000000

 frame-relay interface-dlci 301 ppp Virtual-Template1

!

interface Virtual-Template1

 ip address 192.168.1.3 255.255.255.0

 ip authentication mode eigrp 1 md5

 ip authentication key-chain eigrp 1 MY_KEY

!

router eigrp 1

 network 0.0.0.0

 auto-summary