IPv6 HA Monitoring Considerations

Consider the following when configuring IPv6 HA Monitoring:

• In the Interface Monitoring Settings dialog box, the Physical/Link Monitoring and Override Virtual MAC options are dimmed because they are Layer 2 properties. That is, the properties are used by both IPv4 and IPv6, so you configure them in the IPv4 monitoring page.
• The Primary/Secondary IPv6 address must be in the same subnet as the interface, and it cannot be the same as the global IPv6 address or the link-local address of the Primary or Secondary firewall.
• If the monitoring IP address is set to anything other than ::, the two addresses cannot be the same.
• If Allow Management on Primary/Secondary IPv6 Address is enabled, then Primary/Secondary monitoring IPv6 addresses cannot be unspecified (that is, ::).
• If Logical/Probe IPv6 Address is enabled, then the probe IP cannot be unspecified.