ZyXEL 2WG 사용자 가이드

Chapter 8 WAN and 3G Screens

ZyWALL 2WG User’s Guide

Since WAN 2 has a smaller load balancing index (meaning that it is less utilized than WAN 1), 
the ZyWALL will send the subsequent new session traffic through WAN 2.

This example uses the same network scenario as in 

, but uses both the 

outbound and inbound bandwidth utilization in calculating the load balancing index. If the 
measured inbound stream throughput for both WAN 1 and WAN 2 is 1600K, the ZyWALL 
calculates the average load balancing indices as shown in the table below. 
Since WAN 1 has a smaller load balancing index (meaning that it is less utilized than WAN 2), 
the ZyWALL will send the next new session traffic through WAN 1.

To configure Least Load First, select Least Load First in the Load Balancing Algorithm 
field.

Figure 110   Load Balancing: Least Load First

The following table describes the related fields in this screen.

Table 32   Least Load First: Example 1

WAN 1

512 K

412 K

0.8

WAN 2

256 K 

198 K

0.77

Table 33   Least Load First: Example 2

WAN 1

512 K

412 K

8000 K 

1600 K

( 0.8 + 0.2) / 2 = 0.5

WAN 2

256 K 

198 K

2000 K 

1600 K

( 0.77 + 0.8 ) / 2 = 0.79

Table 34   Load Balancing: Least Load First

Active/Active 

Mode

Select Active/Active Mode and set the related fields to enable load balancing on 

the ZyWALL. 

Load Balancing 

Algorithm

Set the load balancing method to Least Load First.