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
Use Case 2: Forward LAN traffic to the External Network through the Gateway after HA Failover
The interface IP (aka floating IP) in the Azure HA environment is set as the default gateway of the LAN subnet. When LAN traffic forwards to the external network through the gateway, traffic will automatically flow into the active HA Azure firewall without flowing into the standby HA Azure firewall. This is because the interface IP always floats to the active HA Azure firewall. After HA failover, the active HA Azure firewall will change to the standby firewall, so traffic will be forwarded to the newly active firewall.
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