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Active-active cluster packet flow – Fortinet FortiGate-800 User Manual

Page 89

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High availability

Active-Active cluster packet flow

FortiGate-800 Installation and Configuration Guide

89

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

Server

Client

Switch 1

Switch 2

HA cluster

Primary Unit

Subordinate Unit