Coyote Point Systems E350GX, Installation And Administration Manual

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Adding Equalizer to Your Network
Equalizer Installation and Administration Guide 31
Using Equalizer E250GX in a Dual Network Environment
In dual network mode, the client systems, Intranet, and Internet connect to Equalizer through the External Interface
Port, while servers are connected to Equalizer through the Internal Interface Port. Figure 8 shows an example.
Figure 8 Example single network configuration for Equalizer E250GX
As you can see in the example above, Equalizer has a management IP and cluster IP on the 172.16.0.x network
connected to the External Port, and all servers are located on the 192.168.0.x network on the Internal Port.
The External Port is connected to a router which is this subnet’s gateway to other subnets on the Intranet and
Internet networks. The router is assumed to perform all necessary NAT for external clients, so that clients from
outside the 172.16.0.x network can access Equalizer cluster IPs, and Equalizer uses the router as its default gateway.
Internal clients will require special routing to access the cluster IPs, and selective SNAT on Equalizer or special
routing on the servers to ensure that server responses to internal clients go through Equalizer.