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There are no configuration changes that need to be made on the servers, except for the way
they are physically connected to the network.
The diagram also gives an example of a redundant WebMux setup. In this case, it is
absolutely required that the WebMux units are connected in between two switches. In
earlier firmware versions, WebMux depends on STP (spanning tree protocol) to avoid
broadcast storms. From
version 8.7.xx, WebMux no longer require switches to support
STP.
During a failover situation, you may immediately notice that the backup becomes
unreachable though the Internet LAN side. In firmware older than 8.7.09, you may notice
the server LAN side is not accessible.
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.
One-Armed Single Network Mode
The WebMux supports two kinds of “one-armed” modes: Single Network Mode and Out-of-
Path Mode. For Single Network Mode, there are no changes required for the network topology
or server IP addresses. Requests from
clients go to the farm address on the WebMux, which
will in turn go to the servers
through load balancing methods. The server replies are directed
back to the WebMux and sent back to the clients. Single Network Mode has a 65,000
concurrent connections limit per farm.
One-Armed Single Network Mode (Installation without IP Address Change)