SWANS enables greater control to dynamically determine which of the available WAN interfaces is connected and when or how the router should switch to an alternate interface. WAN selection is based on configurable selection criteria.
Note
Enabling SWANS overrides existing failback settings.
Mode – Determines how to apply the selection criteria.
Periodic: Recheck criteria periodically at the configured refresh interval and select the highest priority interface as determined by the current Resolution setting
Acceptable: Continue using the currently connected interface as long as the interface's status continues to fall within the bounds of the configured criteria.
Refresh – The time interval the router waits before reevaluating the enabled criteria to determine interface priority.
Resolution – Determines which interface is selected when more than one interface meets all enabled criteria.
Manual – Use the priority order from the Connection Manager WAN Interface Profile & Priority list to prioritize the interfaces that meet all the enabled selection criteria.
Best Fit – Prioritize all interfaces that meet the enabled selection criteria by the amount that each interface exceeds the criteria threshold of the highest priority criteria. If there is a tie, the second highest priority criterium is considered, and so on.
Selection Criteria – The conditions that are evaluated when determining which interfaces are preferred. Interfaces that exceed all enabled criteria are prioritized above those that do not. Enable only the criteria that should be used in interface evaluation and configure appropriate criteria thresholds.
Signal Strength – Strength is a calculated percentage based on values read from the modem (Ethernet WAN connections will always report 100% strength). Set the minimum allowable signal strength. As strength drops below 50% connections will become increasingly unreliable. The default is 50%.
Data Usage – The current percentage of the configured monthly, weekly, or daily usage cap is used to determine whether an interface passes these criteria. Data Usage is configured in the WAN Interface Profile table on this page. If no data caps are set for an interface, the criteria will always pass. For example, the usage remaining will be 100%.
Latency – Set the maximum allowable latency period. Latency is the average round-trip time to send data from the router to the configured ping target and receive a response. The default is 1,000 ms.
Jitter – Set the maximum allowable jitter. Jitter refers to the variation in latency on data sent between the router and the configured ping target. The default is 500 ms.
Jitter – Set the maximum allowable jitter. Jitter refers to the variation in latency on data sent between the router and the configured ping target. The default is 500 ms.
Supplemental Data – Ping Target: The ping utility (ICMP Echo Request/Response) is used when measuring the latency and jitter criteria. The Ping Target should be set to an IP address or hostname that is appropriate for your data usage, that is, a typical connection destination. The default is 8.8.8.8 (Google Public DNS server).
Current WAN Interface Priority – The order of the criteria can be adjusted by dragging and dropping the rows up or down. This ordering matters only when Resolution is set to Best Fit and multiple criteria are enabled. When that occurs, the interfaces that meet all enabled criteria are prioritized by the amount that each interface exceeds the threshold of the highest ordered and enabled criteria. If there is a tie, then the second highest criteria resolves the tie, and so on.
.