Specifications

42 Barracuda Link Balancer Administrator’s Guide
Planning Your High Availability Deployment
Extra equipment may be needed to support the clustered Barracuda Link Balancers.You may need to
add switches so that the WAN links can connect to two systems. If deploying in front of an existing
firewall, you will need to add a switch between the Barracuda Link Balancers and the firewall (or two
switches for dual firewalls).
The following figures show examples of deployments of a pair of clustered Barracuda Link Balancers
with two clustered firewalls, with one firewall and with no external firewall.
In Front of Single Network Firewall
Figure 4.3 shows two Barracuda Link Balancers deployed with one network firewall. The LAN IP
addresses of the two Barracuda Link Balancers and the VRRP virtual IP address must all be on the
same subnet.
Figure 4.3: Deployment Example - Single Firewall