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Forum Replies

  1. If you change the hello and dead time on R1, do you have to make the exact same change on the R2 interface? Do the hello and dead timers have to be the same on both routers?

  2. Hi Jason,

    These have to be match yes, otherwise no neighbor adjacency is established.

    Rene

  3. Hi Mohammad,

    A good question. I am referring to you to RFC which is a type of publication from the Internet Engineering Task Force (IETF) and the Internet Society (ISOC), the principal technical development and standards-setting bodies for the Internet.
    On April 1998, they have created the publication RFC 2328 for OSPF version 2, and on point 9.5 they spoke about “Sending Hello Packets” as following:

    “Hello packets are sent out each functioning router interface. They are used to discover and maintain neighbor relationships.[6] On broadcast and NBMA networks, He

    ... Continue reading in our forum

  4. Hi Rene,

    I have two established neighbors, just take dead interval as 40 secs if dr goes down for 30 secs bdr will wait for dead interval to proceed further or will it become as dr ??

  5. Hi Karthik,

    If your dead interval is 40 seconds then OSPF will wait for 40 seconds until it declares the neighbor as dead, deleting the neighbor adjacency. If you want to see this in action, connect two routers to each other with a switch in the middle, then disconnect one of the links :slight_smile:

    Rene

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