OSPF router id

Discussion in 'Cisco' started by abhijeet.churmure@gmail.com, Jan 12, 2005.

  1. Guest

    hi
    when router is configured with ospf routing protocol the highest ip
    address configured on any interface becomes the router id. And if
    looback address is configured the it becomes the router id ok. My
    question is that even if the looback interface is configured and its
    ip address is lower than the some other physical interface address,
    then what will be the router id ie weather loopback ip assigend will
    override any other ip specified having higher value than loopback ip
    bye
    Abhi
    , Jan 12, 2005
    #1
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  2. Ivan Ostreš Guest

    In article <>,
    says...
    > hi
    > when router is configured with ospf routing protocol the highest ip
    > address configured on any interface becomes the router id. And if
    > looback address is configured the it becomes the router id ok. My
    > question is that even if the looback interface is configured and its
    > ip address is lower than the some other physical interface address,
    > then what will be the router id ie weather loopback ip assigend will
    > override any other ip specified having higher value than loopback ip
    >



    It's simple:

    1) The highest loopback IP address will become OSPF RID

    2) If no loopback IP is configured, the highest IP address will become
    OSPF RID.


    --
    -Ivan.

    *** Use Rot13 to see my eMail address ***
    Ivan Ostreš, Jan 12, 2005
    #2
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