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If multiple WAN port lines are used, they must be set through Multi-line Options. You can add, delete, and modify the line information and the SDWAN path selection policy.
When the device has a multi-WAN port and enables multiple lines, check Enabled and add multiple lines.
Click the Add to add a line. The dialog box appears as follows:
The Use static Internet IP address should be filled in according to the actual situation. The setting is not necessary if it is a dynamic IP address.
1. When the line type is Ethernet, you must fill in Test DNS; the filled DNS address must be a normal public network DNS address. If it is an ADSL dial-up line, it can be left blank.
2. The Bandwidth Preset item should be filled with the bandwidth parameters according to the actual situation of the line.
Click the Advanced on the Multi-line Options interface, and the Multiline Advanced Settings will appear as follows:
Check Enable DNS detection to enable the status detection for multi-lines.
Interval (1-120): Set the interval frequency of the DNS detection through the multi-line status detection function. This setting is activated only when DNS detection is enabled.
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