SonicOS 7.1 High Availability Administration Guide
- SonicOS 7.1
- About SonicOS
- High Availability
- Replacing an HA Primary Unit
- High Availability Config
- Configuration of HA Active/Standby
- Configuring Active/Standby High Availability Settings
- Configuring HA with Dynamic WAN Interfaces
- Configuring Network DHCP and Interface Settings
- Disabling the SonicOS DHCP Server
- Configuring Virtual IP Addresses
- Configuring Redundant Ports
- Fine Tuning High Availability
- Advanced Settings
- Configuring Advanced High Availability Settings
- Monitoring High Availability
- Configuring Active/Standby High Availability Monitoring
- Configuring Active/Standby High Availability Settings
- IPv6 High Availability Monitoring
- About This Document
- Azure Use Cases
- SonicWall Support
Dynamic WAN Interfaces with PPPoE HA
Dynamic WAN interfaces with PPPoE HA is not supported on the NSsp 15700. Only the DHCP Server dynamic WAN mode is supported.
PPPoE can be enabled on interfaces in non-stateful mode, HA Active/Standby mode. PPPoE HA provides HA where a Standby Security Appliance assumes connection to the PPPoE server when the Active Security Appliance fails.
One WAN interface must be configured as PPPoE; see Configuring a WAN Interface section in the SonicOS 7.1 Firewall Network document available at https://www.sonicwall.com/support/technical-documentation/.
After the Active unit connects to the PPPoE server, the Security Appliance synchronizes the PPPoE session ID and server name to the Standby unit.
When the Active Security Appliance fails, it terminates the PPPoE HA connection on the client side by timing out. The Secondary Security Appliance connects to the PPPoE server, terminates the original connection on the server side, and starts a new PPPoE connection. All pre-existing network connections are rebuilt, the PPPoE sessions are re-established, and the PPP process is renegotiated.
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