• High Availability
  • About High Availability
    • 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
  • About Active/Standby HA
    • Benefits of Active/Standby HA
    • Working of Active/Standby HA
  • About Stateful Synchronization
    • Benefits of Stateful Synchronization
    • How Does Stateful Synchronization Work?
    • Example of Stateful Synchronization
  • Active/Standby and Active/Active DPI Prerequisites
    • Supported Platforms and Licensing for HA
    • Physically Connecting Your Security Appliances
    • Connecting the Active/Active DPI Interfaces for Active/Active DPI
  • Maintenance
    • Removing an HA Association
    • Replacing a SonicWall Security Appliance
      • Replacing an HA Primary Unit
      • Replacing an HA Secondary Unit
• High Availability Status
  • Active/Standby High Availability Status
    • High Availability Status
    • High Availability Config
    • High Availability Licenses
• Configuring High Availability
  • 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
  • IPv6 High Availability Monitoring
  • IPv6 HA Monitoring Considerations
• SonicWall Support
  • About This Document

High Availability Config

The High Availability Config section on the DEVICE | High Availability > Status page provides the following information:

• HA Mode - Indicates one of:
  • None – High Availability is not enabled on the unit.
  • Active/Standby – Active/Standby mode provides basic high availability with the configuration of two identical firewalls as a High Availability Pair. By default, Active/Standby mode is stateless, meaning that network connections and VPN tunnels must be re-established after a failover. To avoid this, Stateful Synchronization can be licensed and enabled with Active/Standby mode.
• HA Control Link – Indicates the port, speed, and duplex settings of the HA control link, such as X6 1 Gbps Full Duplex. When High Availability is not enabled, the field displays N/A. The HA control link is used to communicate heartbeats and other control traffic between the units. If the HA control link fails, X0 is used to communicate heartbeats between units; therefore X0 on both units should be in the same broadcast domain.
• HA Data Link – Indicates the port, speed, and duplex settings of the HA data link, such as X7 1 Gbps Full Duplex. When High Availability is not enabled, the field displays N/A. The HA data link is used to transfer data necessary to keep settings and firmware synchronized between the units.