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Chapter 1. Red Hat Cluster Suite Overview
a Red Hat cluster, you can configure one high-availability cluster to serve both of these roles
simultaneously.
8.3. Routing Methods
You can use Network Address Translation (NAT) routing or direct routing with LVS. The
following sections briefly describe NAT routing and direct routing with LVS.
8.3.1. NAT Routing
Figure 1.22, "LVS Implemented with NAT
Routing", illustrates LVS using NAT routing to move
requests between the Internet and a private network.
Figure 1.22. LVS Implemented with NAT Routing
In the example, there are two NICs in the active LVS router. The NIC for the Internet has a real
IP address on eth0 and has a floating IP address aliased to eth0:1. The NIC for the private
network interface has a real IP address on eth1 and has a floating IP address aliased to eth1:1.
In the event of failover, the virtual interface facing the Internet and the private facing virtual
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