load balance
for the load balance feature, you have a choice of intelligent balancer (auto mode) and ip group (by users), except for wan1. the router reserves at least one wan port for non-ip group users, so wan1 will always be set to intelligent balancer (auto mode).
if you change the router’s load balance mode, a confirmation message will appear. you have to save this change before you can change the settings of any wan ports.
intelligent balancer (auto mode)
select the intelligent balancer (auto mode) setting if you want all wan ports to be in auto mode. the router will automatically compute the maximum bandwidth of all wan ports by using weighted round robin to balance the loading.

in the interface setting table, the number of each wan port is shown in the interface column. its load balance mode is displayed in the mode column. click the edit in the config. column to edit the load balance setting of the selected wan port. the edit load balance screen will appear.
in the interface field, the wan port number is displayed. for the max. bandwidth provided by isp setting, select 64k, 128k, 256k, 384k, 512k, 1024k, 1.5m, 2m, or 2.5m or above from the upstream drop-down menu. from the downstream drop-down menu, select 512k, 1024k, 1.5m, 2m, or 2.5m or above.
you can enable the router to check the network service layer using dns lookup. this tool can detect the network connection status of the isp if you have set up the dns server in the network section of the setup page. if you did not set up the dns server, the checkbox will be grayed out, and then you cannot use the dns lookup tool. the default is unchecked. to use this tool, enter the host name and select the appropriate option from the when fail drop-down menu. using dns lookup, the router will check the network service layer every 15 minutes to see if the network connection to your isp is active.
the when fail drop-down menu offers two options. if the connection is not active, the router will generate a system log or suspend this wan interface. for the generate system log setting, the router will generate a system log when dns lookup fails to inform you that the isp connection may be disconnected. for the suspend this wan interface setting, the router will suspend this wan interface when the network connection to your isp is not active. the traffic on this wan will be dispatched to the other wan ports in auto mode. when the isp connection is re-established, traffic will return to this wan interface.

click the save settings button to save your changes, or click the cancel changes button to undo your changes.
to return to the load balance screen, click the back button.
ip group (by users)
ip group (by users) mode enables you to group traffic by different priority levels or classes of service (cos). it can ensure bandwidth and higher priority for the specific ip addresses of important users, and the ip group users don’t need to share bandwidth with lower classification users who use intelligent balancer mode.
in the interface setting table, the number of each wan port is shown in the interface column. if you have set the ip group for a selected wan port, it will show the message, “dispatched by user” in the mode column. if you did not set the ip group for a selected wan port, it will show the message, “dispatched by system” in the mode column.

after you have selected ip group (by users), then click the edit in the config. column to edit the mode setting of the selected wan port. the edit load balance screen will appear.
in the interface field, the wan port number is displayed. for the max. bandwidth provided by isp setting, select 64k, 128k, 256k, 384k, 512k, 1024k, 1.5m, 2m, or 2.5m or above from the upstream drop-down menu. from the downstream drop-down menu, select 512k, 1024k, 1.5m, 2m, or 2.5m or above.
you can enable the router to check the network service layer using dns lookup. this tool can detect the network connection status of the isp if you have set up the dns server in the network section of the setup page. if you did not set up the dns server, the checkbox will be grayed out, and then you cannot use the dns lookup tool. the default is unchecked. to use this tool, enter the host name and select the appropriate option from the when fail drop-down menu. using dns lookup, the router will check the network service layer every 15 minutes to see if the network connection to your isp is active.
the when fail drop-down menu offers two options. if the connection is not active, the router will generate a system log or suspend this wan interface. for the generate system log setting, the router will generate a system log when dns lookup fails to inform you that the isp connection may be disconnected. for the suspend this wan interface setting, the router will suspend this wan interface when the network connection to your isp is not active. the traffic on this wan will be dispatched to the other wan ports in auto mode. when the isp connection is re-established, traffic will return to this wan interface.

to add an ip range, follow these instructions:
1. enter the beginning ip address of the range in the address field.
2. enter the number of users in the range field.
3. check the ip user will be redirected when link fail box. when checked, the ip users’ traffic will be redirected to the backup link when the initial link fails. when unchecked, the ip users’ traffic will not be redirected. the default is a checkmark.
4. click the add to list button, and configure as many ip range entries as you would like, up to a maximum of 30. to delete an entry, select it and click the delete selected range button.
click the save settings button to save your changes, or click the cancel changes button to undo your changes.
to return to the load balance screen, click the back button.