Technical Reference - ZyXEL Communications SBG3300-N series User Manual

Click the Edit icon next to the ETHWAN WAN connection. This brings up the edit window. Change
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the weight field to 3 and click the Apply button.
You have finished the configuration. When both the ETHWAN and ADSL connections are up, the
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Device will send traffic over these two connections in a 3:1 ratio. When only one of these two
connections are up, the Device will use that connection exclusively. Only when both of these two
connections are down will the Device use the 3G connection.
5.7.2.2 What Can Go Wrong?
• There can only be one WAN connection configured as passive mode at a time. If there is already
a WAN connection configured as passive mode, you will not be able to add or edit another WAN
connection in passive mode until the first WAN connection is changed to active mode or deleted.
• The Device will automatically add newly created WAN connections (from the Network Setting >
Broadband > Broadband screen) to the multi-WAN configuration as active mode with a weight
of 1. If you are creating a new WAN connection for other purposes (such as exclusive VPN use),
you will need to delete that WAN connection from the multi-WAN configuration. Deleting a WAN
connection from the multi-WAN screen does not delete the WAN connection from the Broadband
page.
• A WAN connection can only be listed once in the multi-WAN configuration table. If you are trying
to add a new entry but do not see the desired WAN connection in the Interface drop-down list,
it is probably already in the multi-WAN configuration. The Interface drop-down list in the Add/
Edit screen only includes WAN connections which currently exist on the Device but are not
currently configured in multi-WAN.

5.8 Technical Reference

The following section contains additional technical information about the Device features described
in this chapter.
SBG3300-N Series User's Guide
Chapter 5 Broadband
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