IP-Link in the Hot Standby Environment
This section describes the IP-link in the hot standby environment.
If the FW works in dual-system hot backup networking and identifies a fault affecting services, you can set the VGMP management group to monitor IP-link. In this case, the FW adjusts the priority of VGMP management group to trigger the active/standby switchover, ensuring service continuity.
After VGMP management group monitor IP-link is configured, the status of links or interfaces indirectly connected to the FW can be identified. As shown in Figure 1, if the interface (with IP address 1.1.1.1/24) of the router in the Untrust zone is faulty and IP-link is enabled, the system automatically triggers the active/standby switchover to ensure service continuity.
