Ha Setup; Hardware Setup; High Availability Setup - D-Link NetDefend DFL-210 User Manual

11.3. HA Setup

11.3. HA Setup
This section provides a step-by-step guide for setting up an HA Cluster.

11.3.1. Hardware Setup

1. Start with two physically similar D-Link Firewalls. Both may be newly purchased or one may
have been purchased to be the back-up unit (in other words, to be the slave unit).
2. The units should have the appropriate licenses for a cluster.
3. Make the physical connections:
• Connect the matching interfaces of master and slave through a common switch.
• Select an interface on the master and slave which is to be used by the units for monitoring
each other and connect them together with an Ethernet crossover cable. This will be the
NetDefendOS sync interface. It is recommended that the same interface is used on both
master and slave, assuming they are similar systems.
Figure 11.1. High Availability Setup
The illustration above shows the typical HA Cluster connections. All interfaces of the master
would normally also be present on the slave and be connected to the same networks. This is
achieved by connecting the same interfaces on both master and slave via a switch to other
network portions.
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Chapter 11. High Availability