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
About High Availability
High Availability is designed to alleviate or eliminate:
- System downtime
- Single points of failure
- Increased system load
High Availability (HA) is a redundancy design that allows two identical firewalls running SonicOS to be configured to provide a reliable, continuous connection. One firewall is configured as the Primary unit, and an identical firewall is configured as the Secondary unit. In the event of a failure on the Primary firewall, the Secondary firewall takes over to secure a reliable connection between the connected networks. Two firewalls configured in this way are known as a High Availability Pair (HA Pair).
High Availability provides a way to share SonicWall licenses between two firewalls when one is acting as a high-availability system for the other. To use this feature, you must register the firewalls on MySonicWall.com as Associated Products.
Both firewalls must be the same SonicWall model and firmware.
- High Availability Terminology
- High Availability Modes
- High Availability Encryption
- Crash Detection
- Virtual MAC Address
- Dynamic WAN Interfaces with PPPoE HA
- Stateful Synchronization with DHCP
- Stateful Synchronization with DNS Proxy
- About HA Monitoring
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