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Authentication

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Authentication

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Authentication

RST Forum White Paper

 

LAB6: Named EIGRP – IPv4

Disclaimer

This Configuration Guide is designed to assist members to enhance their skills in respective technology area. ​​ While every effort has been made to​​ ensure that all material is as complete and accurate as possible, the enclosed material is presented on an “as is” basis. ​​ Neither the authors nor Forum assume any liability or responsibility to any person or entity with respect to loss or damages incurred​​ from the information contained in this guide. This Lab Guide was developed by RSTForum. ​​ Any similarities between material presented in this configuration guide and any other material is completely coincidental.

LAB 6: Diagram

Note: This Lab was developed​​ on Cisco IOS Version15.2(4) M1 ADVENTERPRISEK9-M.

LAB 6: EIGRP Authentication using named configuration:

Task 1: Configure IPv4 EIGRP Authentication using named​​ 

configuration

 

  • In the configuration mode of router configure IPv4 EIGRP process with a name

 

R1:

router eigrp cisco

address-family ipv4 autonomous-system 100

net 12.0.0.1 255.255.255.0

net 11.0.1.1 255.255.255.0

net 11.0.2.1 255.255.255.0

net 11.0.3.1 255.255.255.0

exit

 

 

  • In the configuration mode of router configure create Key chain and assign​​ key and select encryption mode

 

R1:

key chain akbar

key 1

key-string cisco

exit

interface serial 2/0

ip authentication mode eigrp 100 md5

ip authentication key-chain eigrp 100 akbar

exit

 

 

  • Enable EIGRP authentication on both the neighbors

 

R2:

key chain​​ birbal

key 1

key-string cisco

exit

interface serial 2/0

ip authentication mode eigrp 100 md5

ip authentication key-chain eigrp 100 birbal

exit

 

Task 2: ​​ Verification:

  • Verification of authentication by following command:

 

R1#show running-config

key chain​​ akbar

key 1

key-string cisco

!

!

interface Serial2/0

ip address 12.0.0.1 255.255.255.0

ip authentication mode eigrp 100 md5

ip authentication key-chain eigrp 100 akbar

serial restart-delay 0

!

!

router eigrp cisco

!

address-family ipv4 unicast​​ autonomous-system 100

!

topology base

exit-af-topology

network 11.0.1.1 0.0.0.0

network 11.0.2.1 0.0.0.0

network 11.0.3.1 0.0.0.0

network 12.0.0.1 0.0.0.0

exit-address-family

!

 

R2#show running-config

key chain birbal

key 1

key-string cisco

!

!

interface​​ Serial2/0

ip address 12.0.0.2 255.255.255.0

ip authentication mode eigrp 100 md5

ip authentication key-chain eigrp 100 birbal

serial restart-delay 0

!

!

router eigrp cisco

!

address-family ipv4 unicast autonomous-system 100

!

topology base

network 12.0.0.2​​ 0.0.0.0

network 22.0.1.2 0.0.0.0

network 22.0.2.2 0.0.0.0

network 22.0.3.2 0.0.0.0

network 23.0.0.2 0.0.0.0

!

exit-address-family

!

 

 

  • Verify EIGRP neighborship by following command:

 

R1#show ip eigrp neighbors

! (Gives details and list of EIGRP neighbors)

 

EIGRP-IPv4 VR(cisco) Address-Family Neighbors for AS(100)

H  ​​​​ Address  ​​ ​​ ​​ ​​ ​​​​ Interface  ​​ ​​ ​​ ​​ ​​​​ Hold  ​​​​ Uptime  ​​​​ SRTT  ​​​​ RTO  ​​​​ Q  ​​ ​​​​ Seq

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ (sec)  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ (ms)  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ Cnt Num

0  ​​​​ 12.0.0.1  ​​ ​​ ​​ ​​ ​​​​  ​​ ​​ ​​​​ Se2/0  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​  ​​ ​​ ​​​​ 10  ​​ ​​​​ 00:00:19 ​​ ​​ ​​​​ 17  ​​ ​​ ​​ ​​​​ 102  ​​ ​​​​ 0  ​​ ​​ ​​ ​​ ​​​​ 6

 

R2#show ip eigrp neighbors

! (Gives details and list of EIGRP neighbors)

 

EIGRP-IPv4 VR(cisco) Address-Family Neighbors for AS(100)

H  ​​​​ Address  ​​ ​​ ​​ ​​ ​​​​ Interface  ​​ ​​ ​​ ​​​​ Hold Uptime  ​​​​ SRTT  ​​​​ RTO ​​ ​​ Q  ​​ ​​​​ Seq

 ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ (sec)  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ (ms)  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ Cnt Num

0  ​​​​ 12.0.0.1  ​​ ​​ ​​​​ Se2/0  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​  ​​​​ 11 ​​ 00:00:33 ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ 11  ​​ ​​ ​​​​ 100  ​​ ​​​​ 0  ​​ ​​ ​​​​ 13

1  ​​​​ 23.0.0.3  ​​ ​​​​ Et0/0  ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ 12 ​​ 00:13:54  ​​ ​​ ​​​​ 1  ​​ ​​ ​​ ​​ ​​​​ 100​​  ​​ ​​​​ 0  ​​ ​​ ​​​​ 15

 

 

 

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