The Trunk Summary Screen - ZyXEL Communications ZyWall USG 2000 User Manual

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.
In this example figure, the upper threshold of the first interface is set to 800K.
The ZyWALL sends network traffic of new sessions that exceed this limit to the
secondary WAN interface.
Figure 144 Spillover Algorithm Example
Finding Out More
• See Section 5.4.3 on page 91
• See Section 11.4 on page 232
• See Section 6.3 on page 109

11.2 The Trunk Summary Screen

Click 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 145 Network > Interface > Trunk
ZyWALL USG 2000 User's Guide
for related information on the Trunk screens.
for more background information on trunks.
for an example of how to configure load balancing.
Chapter 11 Trunks
229