Topology: Redundancy through multiple Exinda appliances

Given a redundant topology (shown in the image on the left), multiple Exinda appliances can be deployed within the redundant architecture. When the Exinda appliances are configured as a high availability cluster, they act as a single appliance (shown in the image on the right) yet maintain redundancy in case of failure.

Each appliance processes traffic between its switch and router. The two appliances are directly connected to each other and forwards its traffic to the other appliance. Note that the traffic that is received from the other Exinda appliance will not be forwarded onto the LAN. Both appliances report on the data in the same way.

The Exinda appliances also automatically synchronize configuration settings between the two appliances.

All platforms support this topology.

Capabilities

• Monitoring of both links.
• Optimization of both links.
• Redundancy of Exinda appliances.

Installation

1. On each Exinda, assign an interface for cluster internal use and an interface to manage the appliance.
2. Connect the cluster interfaces on each Exinda with a crossover cable.
3. Power up Exinda 1. After one minute, power up Exinda 2.
4. Connect Exinda 1 LAN into switch 1/port 1.
5. Connect Exinda 1 WAN into router 1.
6. Connect Exinda 2 LAN into switch 2/port 1.
7. Connect Exinda 2 WAN into router 2.
8. Connect Exinda 1 management interface into switch 1/port 2.
9. Connect Exinda 2 management interface into switch 2/port 2.