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  1. Rene, do you have IPSEC lesson?

  2. Is the “0” or “7” option relating to whether or not the running-config file saves the key as encrypted or clear text?

  3. Hello Chris

    Options 0 and 7 refer to whether or not the key that is sent between the routers during the authentication process is encrypted. In order to encrypt the key in the configuration file, use the system password-encryption command. This command encrypts authentication key passwords among others.

    I hope this has been helpful!

    Laz

  4. Hi,
    does this means IPsec is the only way to authenticate in OSPFv3?
    I tried with the following and it worked:

    R2#interface Ethernet0/0
    
    no ip address
    
    ipv6 address 2001::2/64
    
    ospfv3 1 authentication key-chain CISCO
    
    ospfv3 1 ipv6 area 0
    
    
    
    R2#show ospfv3 ipv6
    
    OSPFv3 1 address-family ipv6
    
    Router ID 2.2.2.2
    
    Active Key-chains:
    
      Key chain CISCO: Send key 1, Algorithm HMAC-SHA-1, Number of interfaces 1
    
        Area BACKBONE(0)
    

    thanks

    Edit: This post gives the idea that OSPFv3 does not support any authentication beside IPsec, but after checking it does support the usual MD5 and HMAC that I mentioned above.
    Samer.

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