Authentication
LAB10: OSPF – IPv6
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LAB 10: Diagram
Note: This Lab was developed on Cisco IOS Version15.2(4) M1 ADVENTERPRISEK9-M.
LAB 10: IPv6 OSPF Authentication:
Task 1: Configure IPv6 OSPF Authentication
Enter the interface where authentication is required and select the encryption mode:
R1:
interface s2/0
ipv6 ospf authentication ipsec spi 256 md5 0123456789ABCDEF0123456789ABCDEF
exit
Enable IPv6 OSPF authentication on both the neighbors:
R2:
interface s2/0
ipv6 ospf authentication ipsec spi 256 md5 0123456789ABCDEF0123456789ABCDEF
exit
Task 2: Verification:
Verification of authentication by following command:
R1#show run
! (To display the contents of the currently running configuration file or the configuration the show running-config command in privileged EXEC mode.)
interface Serial2/0
ipv6 address 12::/64 eui-64
ipv6 ospf authentication ipsec spi 256 md5 0123456789ABCDEF0123456789ABCDEF
ipv6 ospf 1 area 1
R2#show run
interface Serial2/0
ipv6 address 12::/64 eui-64
ipv6 ospf authentication ipsec spi 256 md5 0123456789ABCDEF0123456789ABCDEF
ipv6 ospf 1 area 1
Verify OSPF neighborship by following command:
R1#clear ipv6 ospf process
R2#clear ipv6 ospf process
! (Will flush current IPv6 OSPF process and initiate fresh OSPF process.)
R1#show ipv6 ospf neighbors
! (Gives list of OSPF neighbors)
OSPFv3 Router with ID (11.0.3.1) (Process ID 1)
Neighbor ID Pri State Dead Time Interface ID Interface
22.0.3.2 0 FULL/ - 00:00:32 11 Serial2/0
R2#show ipv6 ospf neighbors
! (Gives list of OSPF neighbors)
OSPFv3 Router with ID (22.0.3.2) (Process ID 2)
Neighbor ID Pri State Dead Time Interface ID Interface
33.0.3.3 1 FULL/DR 00:00:39 3 Ethernet0/0
11.0.3.1 0 FULL/ - 00:00:39 11 Serial2/0
(OSPF neighbors will authenticate the key and if key matches, OSPF neighborship will be formed. Fresh IPv6 OSPF neighborship can be verified in IPv6 OSPF neighbor table.)
