User manual

The WebMux Pro and Model WM108E User Guide – Version 5. 8 Rev15

Network Overview

The WebMux has two modes, In-Path, or NAT (Network Address Translation)

and Out-of-Path (Direct Routing) mode. Each mode has its advantage and

disadvantages. Lets look the NAT mode first.

The main purpose of the WebMux is to balance the traffic among multiple web or

other servers. The diagram above shows an NAT installation with two

WebMuxes. In this configuration, one WebMux is serving as the primary, and the

other is serving as the secondary, or backup, providing a fault tolerant solution.

In order for the web servers to share the incoming traffic, the WebMux must be

connected to the network. There are two interfaces on the WebMux. One

interface connects to the Router LAN. This is the network to which the Internet

router is connected. The other interface is connected to the Server LAN. This

network connects all the web servers. The WebMux routes traffic between these

two networks.

Next, a Virtual Farm or multiple farms must be configured on the WebMux. A

virtual farm is a single representation of the servers to the clients. A farm consists

of a group of servers that service the same domain, website or services. For

example, to configure a farm (or virtual farm) to serve www.cainetworks.com: