Chapter 7 Tutorials

5Go to the Dashboard. The Interface Status Summary section should contain a “cellular” entry. When its connection status is Connected you can use the 3G connection to access the Internet.

Figure 74 Status

6The ZyWALL automatically adds the cellular interface to the system default WAN trunk. If the ZyWALL is using a user-configured trunk as its default trunk and you want this cellular interface to be part of it, use the Trunk screens to add it.

This way the ZyWALL can automatically balance the traffic load amongst the available WAN connections to enhance overall network throughput. Plus, if a WAN connection goes down, the ZyWALL still sends traffic through the remaining WAN connections. For a simple test, disconnect all of the ZyWALL’s wired WAN connections. If you can still access the Internet, your cellular interface is properly configured and your cellular device is working.

To fine-tune the load balancing configuration, see Chapter 14 on page 337. See also Section 7.3 on page 124 for an example.

7.3How to Configure Load Balancing

This example shows how to configure a trunk for two WAN connections (to the Internet). The available bandwidth for the connections is 1Mbps (ge2) and 512 Kbps (ge3) respectively. As these connections have different bandwidth, use the Weighted Round Robin algorithm to send traffic to wan1 and wan2 in a 2:1 ratio.

Figure 75 Trunk Example

ge2: 1 Mbps

ge3: 512 Kbps

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ZyWALL USG 2000 User’s Guide