High Availability for FortiADC on Alibaba Cloud

You can deploy FortiADC-VM HA (High Availability) on Alibaba Cloud (AliCloud) in Active-Active-VRRP mode.

In an Active-Active-VRRP cluster, one of the nodes is selected as the primary node of a traffic group, and all other nodes in the traffic group are member nodes. Traffic from upstream can be load-balanced to up to two member nodes. When failover occurs in an Active-Active-VRRP cluster, the traffic group active on the primary node will fail over to one of the backup nodes which will send gratuitous ARP to adjacent devices to redirect traffic for its own MAC address to all network interfaces within the traffic group.

For more information about HA modes, see the FortiADC Handbook topic on High Availability Deployments.

Currently, FortiADC HA on AliCloud is supported only for Active-Active-VRRP mode with Layer 7 virtual servers and Layer 4 virtual servers in Full NAT mode. For AliCloud Active-Active-VRRP mode with Layer 4 virtual servers in Full NAT mode, only one IP is supported.