User guide

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For single WebMux setup, any kind of switch will work, since there is only one bridge path
exist on the network. No Spanning Tree Protocol is required.
4.4 Installation without IP Address Change
(One-Armed Single Network Mode)
Single Network Mode configuration is simple, with only one interface connected to the
network. You can use either the Internet Port or the Server Port of the WebMux, but only
ONE of them. The WebMux and the servers are also all on the same subnet.
In Single Network Mode, connections being load balanced and going to the real servers will
appear to come from the WebMux itself. You will not need to make any changes on your
servers since the servers will always reply back to the WebMux when sending back their
reply.
In this mode, the client’s real IP addresses will not be logged in your server log. You have to
use “X-Forwarded-For” (XFF) http header to find where the client’s real IP address. If the
HTTP header already has X-Forwarded-For tag in it, WebMux will not alter the tag. If the
traffic is not for HTTP port, WebMux will not insert the XFF header for the traffic. Enable
XFF header insertion is optional on the per farm basis. If your host software does not need
this header, it is better not insert it to reduce CPU usage.
If you are configuring a redundant configuration in Single Network Mode, be sure you have
selected the “1ARM-Single Network” option in both WebMuxes’ initial configuration shown
in the following section to ensure that the failover checking between the two WebMuxes will
be correct.