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Add an OSPFv3 interface

To add an OSPFv3 interface, do as follows:

  1. Go to Routing > OSPFv3.
  2. Scroll down to Interfaces and areas. Under Interfaces, click Add.
  3. Interface: Select an interface on which OSPFv3 can run.

  4. Area: Enter a value in IPv4 address format. Example:

  5. Hello interval: Enter the time, in seconds, between hello packets the interface sends to discover its neighbors. Default: 10 seconds.

  6. Dead interval: Time, in seconds, the interface waits to receive a hello packet before it determines a neighbor's unavailable. Default: 40 seconds.

    The firewall automatically sets the dead interval at four times the Hello interval value. When you use this calculated value, make sure the dead interval is within the allowed range. You can change this manually.


    Hello and dead intervals must be the same on all routers in the network.

  7. Retransmit-interval: Enter the time, in seconds, between link-state advertisements (LSA) the interface transmits. Default: 5 seconds.

  8. Transmit-delay: Enter the time, in seconds, needed to transmit a link-state update packet on the interface. Default: 1 second.

    This accommodates transmission and propagation delays, particularly on low-speed links.

  9. Interface cost: Determines the best OSPFv3 route. Choose an option from the following:

    1. If you select Auto, the firewall uses the configured interface speed to calculate the interface cost. See Auto-cost reference-bandwidth.

      If you change the configured speed on Networks > Interfaces for Link mode, OSPF uses the updated speed only after you restart the firewall.

    2. Alternatively, clear the checkbox and enter a value. Lower numbers indicate a lower cost and are preferred.

  10. Instance ID: Enter a number to identify the OSPFv3 instance. Default: 0.

    Currently, the firewall only supports a single instance on an interface.

  11. Router priority: Enter a number from the range. Default: 1.

    It influences the selection of the designated router (DR) and the backup designated router (BDR).

    A router with a higher number has a higher priority in the selection. For routers with the same value, the router with the highest router ID is selected. If you enter 0, the interface can't be the DR or BDR.

  12. Click Save.