Forum Replies

  1. Hi Rene,
    I want to know how OSPF Prevent Inter-Area Loop at ABR and ASBR end ?? How its works if two ABR /ASBR Scenario ? How ABR do function ? I think a details write up needed regarding looping prevention issue in your clear text . Appreciate your write up on it .Thx


  2. Hello Mohammad

    The ADV Router ID heading shows the router ID of the advertising router, that is the router from which this LSA was received.

    Now the Link State ID heading is a little more tricky. According to the OSPF RFC, when a router is packaging all of its local, Type-1 Router LSAs into a single OSPF packet, and adds an LSA Header to the front of those LSAs, the “Link State ID” field in that header is always the Router-id of that router. Now…within each, individual LSA there is another field called the “Link ID” field. For each Router LSA it is THIS fie

    ... Continue reading in our forum

  3. Hello Mohammad

    I’ll let @ReneMolenaar respond to this one. I’ll let him know and he can tell us if/when inter-area loop prevention for OSPF will be included in a future lesson.


  4. Hi Laz,
    Thanks for your valuable reply on complex issue as always :slight_smile: Could you please reply on Looping issue for the intermediate time ?? It will very much helpful to keep my study continue .Many thanks


  5. Hi Laz ,
    Many Thx laz…:slight_smile: I have read this lesson before . I need to know about how ospf prevent looping issue by using ABR . Suppose two ABR here . One ABR injecting LSA-3/LSA-5 and what will happend when other ABR receiving those LSA-3/LSA-5 and vice versa .Thx



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