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Is an OSPF Link State Request message ever sent or received after an adjacency is FULL?

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  • 1.  Is an OSPF Link State Request message ever sent or received after an adjacency is FULL?

     
    Posted 04-14-2020 22:09

    Hi.

     

    I understand that the LS Request message is required for OSPF database synchronization during the creation of an OSPF adjacency between two routers. However, once both databases are synchronized and the adjacency is FULL, is there any scenario where an LS Request message can be seen over the FULL adjacency?

     

    Thanks.



  • 2.  RE: Is an OSPF Link State Request message ever sent or received after an adjacency is FULL?
    Best Answer

     
    Posted 04-14-2020 22:31

    Hi 

     

    The link state request message is sent just after the Database Description exchange. Once the requested link state are exchanged and the adjanceny is full then only link state update (LS update) and link state acknowledge (LS ack) is exchanged whenver there is change in the ospf domain. I dont think there is any scenario where LS request is seen after the adjacency is full.

     

    Check out the RFC

     

    https://www.freesoft.org/CIE/RFC/1583/106.htm

     

     



  • 3.  RE: Is an OSPF Link State Request message ever sent or received after an adjacency is FULL?

     
    Posted 04-15-2020 12:38

     

     

    If this solves your problem, please mark this post as "Accepted Solution" so we can help others too \:)/

     

    Regards,

     

    Lil Dexx
    JNCIE-ENT#863, 3X JNCIP-[SP-ENT-DC], 4X JNCIA [cloud-DevOps-Junos-Design], Champions Ingenius, SSYB