Chapter 10 Interfaces
ZyWALL USG Series User’s Guide
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10.14.1 Configuring a User-Defined Trunk
Click Configuration > Network > Interface > Trunk, in the User Configuration table click the Add (or Edit)
icon to open the following screen. Use this screen to create or edit a WAN trunk entry.
Figure 279 Configuration > Network > Interface > Trunk > Add (or Edit)
Each field is described in the table below.
Edit Double-click an entry or select it and click Edit to open a screen where you can modify
the entry’s settings.
Remove To remove a user-configured trunk, select it and click Remove. The Zyxel Device confirms
you want to remove it before doing so.
References Select an entry and click References to open a screen that shows which settings use the
entry. See Section 10.5.4 on page 328 for an example.
# This field is a sequential value, and it is not associated with any interface.
Name This field displays the label that you specified to identify the trunk.
Algorithm This field displays the load balancing method the trunk is set to use.
Apply Click this button to save your changes to the Zyxel Device.
Reset Click this button to return the screen to its last-saved settings.
Table 131 Configuration > Network > Interface > Trunk (continued)
LABEL DESCRIPTION
Table 132 Configuration > Network > Interface > Trunk > Add (or Edit)
LABEL DESCRIPTION
Name This is read-only if you are editing an existing trunk. When adding a new trunk, enter a
descriptive name for this trunk. You may use 1-31 alphanumeric characters, underscores
(
_), or dashes (-), but the first character cannot be a number. This value is case-sensitive.
Load Balancing
Algorithm
Select a load balancing method to use from the drop-down list box.
Select Weighted Round Robin to balance the traffic load between interfaces based on
their respective weights. An interface with a larger weight gets more chances to transmit
traffic than an interface with a smaller weight. For example, if the weight ratio of wan1 and
wan2 interfaces is 2:1, the Zyxel Device chooses wan1 for 2 sessions’ traffic and wan2 for 1
session’s traffic in each round of 3 new sessions.
Select Least Load First to send new session traffic through the least utilized trunk member.
Select Spillover to send network traffic through the first interface in the group member list
until there is enough traffic that the second interface needs to be used (and so on).
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