ZyXEL Communications 1000 User Manual

 Chapter 14 Trunks

ZyWALL USG 1000 User’s Guide

Click Configuration > Network > Interface > Trunk and then the Add (or 
Edit) icon to open the Trunk Edit screen. Use this screen to create or edit a WAN 
trunk entry.

Figure 271   Configuration > Network > Interface > Trunk > Add (or Edit)   

  

Enable Default 
SNAT

Select this to have the ZyWALL use the IP address of the outgoing 
interface as the source IP address of the packets it sends out through 
its WAN trunks. The ZyWALL automatically adds SNAT settings for 
traffic it routes from internal interfaces to external interfaces.

Default Trunk 
Selection

Select whether the ZyWALL is to use the default system WAN trunk or 
one of the user configured WAN trunks as the default trunk for routing 
traffic from internal interfaces to external interfaces.

User 
Configuration / 
System Default

The ZyWALL automatically adds all external interfaces into the pre-
configured system default SYSTEM_DEFAULT_WAN_TRUNK. You 
cannot delete it. You can create your own User Configuration trunks. 

Add

Click this to create a new user-configured trunk.

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 
ZyWALL confirms you want to remove it before doing so.

Object 
References

Select an entry and click Object References to open a screen that 
shows which settings use the entry. See 

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 ZyWALL. 

Reset

Click this button to return the screen to its last-saved settings. 

Table 79   Configuration > Network > Interface > Trunk (continued)