SonicOS/X 7 High Availability Administration Guide
- High Availability
- High Availability Status
- Configuring High Availability
- Fine Tuning High Availability
- Monitoring High Availability
- Failure Monitoring
- SonicWall Support
Configuring HA with Dynamic WAN Interfaces
The configuration tasks on DEVICE | High Availability > Settings are performed on the Primary firewall and then are automatically synchronized to the Secondary firewall.
To configure HA with a dynamic WAN interface
- Navigate to NETWORK | System > Interfaces.
- Configure a WAN interface as PPPoE, as described in Configuring a WAN Interface in the SonicOS 7.0 Firewall Network document available at https://www.sonicwall.com/support/technical-documentation/.
- Navigate to DEVICE | High Availability > Settings.
- In GENERAL SETTINGS section, do the following:
- select HA mode from the Mode drop-down field.
- Click OK.
- Ensure Enable Stateful Synchronization is not selected. This option is not selected by default.
- Ensure Enable Preempt Mode is not selected. This option is not selected by default.
- Select Enable Virtual MAC to allow the Primary and Secondary firewalls to share a single MAC address. This greatly simplifies the process of updating network ARP tables and caches when a failover occurs. This option is not selected by default.
- If PPPoE Unnumbered is configured, you must select Enable Virtual MAC.
- Only the switch to which the two firewalls are connected needs to be notified. All outside devices continue to route to the single shared MAC address.
- Configure HA Devices and HA Interfaces options as described in Configuring Active/Standby High Availability Settings.
- Click Accept.
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Navigate to DEVICE | High Availability > Monitoring.
-
Hover over the PPPoE interface and click Edit icon.
Interface Monitoring Settings dialog is displayed.
- Enable Physical/Link Monitoring. This option is not selected by default.
- Ensure the Primary IPv4 Address and Secondary IPv4 Address fields are set to 0.0.0.0.
- Ensure none of the other options are selected.
- Click OK.
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