Editing an OSPF interface

You can edit an OSPF interface in a CPE template or on an individual device. When you edit an OSPF interface in a CPE template, the interface is automatically modified on all devices that are using the template.

To edit an OSPF interface:

1. Edit an OSPF interface in one of the following ways:
   • If you want to edit an OSPF interface in a CPE template, go to the SD-WAN → CPE templates menu section, click the template and in the displayed settings area, select the OSPF → OSPF interface tab.
   • If you want to edit an OSPF interface on a CPE device, go to the SD-WAN → CPE menu section, click the device, and in the displayed settings area, select the OSPF → OSPF interface tab and select the Override check box.

   A table of OSPF interfaces is displayed.

2. Click Edit next to the OSPF interface that you want to edit.
3. This opens a window, in that window, in the Interface drop-down list, select a previously created network interface which you want to use as an OSPF interface.
4. In the OSPF area field, enter the ID of the OSPF area to which the OSPF interface belongs, as an IPv4 address or an integer number.
5. If you want to specify OSPF authentication:
   1. In the Authentication drop-down list, select an authentication method:
      • Message digest to use the MD5 algorithm.
      • Simple password to use an unencrypted password. This authentication method is less secure than MD5 algorithm, however, it can provide authentication when used in a trusted network environment. If you select this option, enter the authentication password in the Password field.
   2. If in the Authentication drop-down list, you selected Message digest, follow these steps:
      1. In the Key ID field, enter the MD5 hash. Range of values: 1 to 255.
      2. In the Key field, enter the MD5 key.
6. In the Cost field, enter the metric of the OSPF interface. Range of values: 1 to 65,535.
7. In the Network type drop-down list, select the type of network to which the OSPF interface is connected:
   • Broadcast
   • Non-broadcast
   • Point-to-multipoint
   • Point-to-point
8. In the Priority field, enter the priority of the OSPF interface. The greater the value, the higher the priority of the OSPF interface.

   The highest-priority OSPF interface becomes the designated router of the network segment. The OSPF interface with the second highest priority becomes the backup designated router.

9. If you want to switch the OSPF interface to passive mode, select the Passive interface check box. In passive mode, OSPF interfaces do not exchange traffic packets.
10. If you want to use the BFD protocol to detect loss of connectivity, select the BFD check box. This check box is cleared by default.
11. If you want to configure OSPF timers:
    1. Select the OSPF timers check box. This check box is cleared by default.
    2. In the Hello (sec.) field, enter the time interval in seconds that the OSPF interface uses to send control packets to OSPF peers. Range of values: 1 to 65,535.
    3. In the Dead (sec.) field, enter the time interval in seconds that the OSPF interface uses to receive control packets from OSPF peers. If no control packets are received from an OSPF peer within the specified time, the OSPF interface considers the peer unavailable. Range of values: 1 to 65,535.
12. In the Retransmit interval (sec.) field, enter the time after which the OSPF resends lost traffic packets. Range of values: 1 to 65,535.
13. In the Transmit delay (sec.) field, enter the delay in seconds before the OSPF interface sends the first traffic packet. Range of values: 1 to 65,535.
14. Click Save.

    The OSPF interface is modified and updated in the table.

15. In the upper part of the settings area, click Save to save the settings of the CPE template or device.