Fortinet FortiGate-800 manual Active-Active cluster packet flow, Active-active HA packet flow

High availability Active-Active cluster packet flow

Weight values are entered in order according to the priority of the units in the cluster. For example, if you have a cluster of three FortiGate units, you can enter the following command to configure the weight values for each unit:

set system ha weight 1 3 3

This command has the following results:

•The first connection is processed by the primary unit

•The next three connections are processed by the first subordinate unit

•The next three connections are processed by the second subordinate unit

The subordinate units process more connections than the primary unit, and both subordinate units, on average, process the same number of connections.

Active-Active cluster packet flow

This section describes packet flow through an active-active HA cluster. The cluster consists of two FortiGate units (primary and subordinate). Cluster interfaces are connected using switches.

•NAT/Route mode packet flow

•Configuring switches to work with a NAT/Route mode cluster

•Transparent mode packet flow

Figure 18: Active-active HA packet flow

Switch 1		Switch 2
	HA cluster
	Primary Unit

Client

Server

Subordinate Unit

FortiGate-800 Installation and Configuration Guide 89