DR and BDR

nathan8nathan8 Posts: 12Member ■□□□□□□□□□
How do you tell which router will become the DR and which will become the BDR.
Is it based on the ip address or the layout of the network.

Comments

  • keenonkeenon Posts: 1,921Member ■■■■□□□□□□
    the dr and bdr are determined by the
    highest interface priority in that ospf area
    highest loopback ip address
    finally by the highest ip address on the router

    depending on the network topology if an election takes place..
    Become the stainless steel sharp knife in a drawer full of rusty spoons
  • romainromain Posts: 222Member
    keenon wrote:
    the dr and bdr are determined by the
    highest interface priority in that ospf area
    highest loopback ip address
    finally by the highest ip address on the router

    depending on the network topology if an election takes place..

    That's it and when priority is set up in the config, this setting is pre-emp ;)
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    Dynamips Labs
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