OSPF opens and sets up OSPF dynamic routing protocols for IAG devices, including network configuration, interface configuration, parameter configuration, information display, debugging options, etc. In addition, these devices support IPv4 OSPF. It is shown in the figure below:

Select Enable OSPF, and it will show the prompts below:

Click Yes to save the configuration.

Click Set Virtual Link: When the area where IAG devices are located is not adjacent to the OSPF backbone area, the virtual link needs to be enabled and configured.

Select Enable to enable the virtual link.

Area ID: Enter the ID of the backbone area.

Router ID: Enter the router ID on the opposite endpoint establishing the virtual link to indicate which router the virtual link is established.

Hello Time: The retransmit interval of Hello messages, with a default value of 10s.

Retransmit Interval: The retransmit interval of the connection status message adjacent to the interface, with a default value of 10s.

Delay: The estimated time to transmit a link-status update packet with a default value of 5s.

Dead Time: If the Hello message has not been received after the dead time, the OSPF neighbor is considered unreachable, and it is generally set to 4 times the Hello interval, with a default value of 40s.

Encryption Method: Set the encryption method for message transmission in plaintext, MD5, or no authentication.[A249]

Password: The password used for message encryption.

Click OK[A250] to save the configuration.

Click Advanced[A251] to set up the route redistribution and NBMA neighbor configuration, as shown in the following figure: