TP-Link TL-ER6020 manual Protocol, Timing, Failover, Status ：,  List of Rules

Timing:	Link Backup will be enabled if the specified effective time is reached.
	All the traffic on the primary WAN will switch to the backup WAN at the
	beginning of the effective time; the traffic on the backup WAN will
	switch to the primary WAN at the ending of the effective time.
Failover:	Specify the premise for Failover Mode. The backup WAN port will be
	enabled only when the premise is met.

Backup Effective Time: Specify the backup effective time if Timing Mode has been selected. Then the backup WAN port will be enabled, while the primary WAN port is disabled in the specified time period. When the start time you enter is not earlier than the end time, the default effective time is from the start time of the day to the end time of the next day.

Status： Activate or inactivate the entry.

List of Rules

You can view the information of the entries and edit them by the Action buttons.

The first entry in Figure 3-41indicates: WAN1 is the primary port and WAN2 is the backup port. WAN2 will be enabled while WAN1 is failed. This entry is enabled.

Note:

The same WAN port cannot be added to the primary and secondary WAN lists at the same time, and one WAN port should be added to only one list.

3.3.4.4Protocol

On this page, you can specify the protocol for routing rules conveniently. A protocol constitutes of the name and number. The Router predefines three commonly used protocols such as TCP, UDP and TCP/UDP. Moreover, you can also add new protocols as your wish.

Choose the menu Advanced→Load Balance→Protocol to load the following page.

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