ZyXEL Communications 110, 1100, 310 8.2 The Trunk Summary Screen

Chapter 8 Trunk

Spillover

The spillover load balancing algorithm sends network traffic to the first interface in the trunk member list until the interface’s maximum allowable load is reached, then sends the excess network traffic of new sessions to the next interface in the trunk member list. This continues as long as there are more member interfaces and traffic to be sent through them.

Suppose the first trunk member interface uses an unlimited access Internet connection and the second is billed by usage. Spillover load balancing only uses the second interface when the traffic load exceeds the threshold on the first interface. This fully utilizes the bandwidth of the first interface to reduce Internet usage fees and avoid overloading the interface.

Figure 103 Spillover Algorithm Example

8.2 The Trunk Summary Screen

Click Configuration > Network > Interface > Trunk to open the Trunk screen. This screen lists the configured trunks and the load balancing algorithm that each is configured to use.

Figure 104 Configuration > Network > Interface > Trunk

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	ZyWALL 110/310/1100 Series User’s Guide