Outbound LLB

System > Network > Basic Network > Load Balancing > Link Load Balancing > Outbound

After enabling LLB for outbound traffic, the system will detect the best link using  proximity detection technique if it fails to find the egress via existing PBR, SIBR, SBR, destination route (except for the default route 0.0.0.0/0) and ISP route.

Enabling Outbound LLB

To enable the outbound LLB, you should enable the proximity detection function on the specified interfaces. Take the following steps:

  1. Click Proximity Interface, the Proximity Interface dialog appears.
  2. Select the interfaces you want to enable the proximity detection function on.
  3. Click OK.

Configuring Poximity Route

After successfully detecting a link via proximity detection technique, the system will generate a static route (known as proximity route) and add it to the routing table. You can customize the proximity route as needed. To configure a proximity route, take the following steps:

  1. Select the next-hop interface from the Interface drop-down list, and select the virtual router the route in from the Virtual Router drop-down list. The routes on the specified interface in the specified virtual router will be listed in the table below.
  2. Click Proximity Route Options, the Proximity Route Options dialog appears. Configure the proximity route settings on this dialog. The description of options are listed in the below table.
  3. Click OK.

Options on the Proximity Route Options dialog:

Option Description

Aging Time

Specifies the aging time for the proximity route. The value range is 1 to 1440 minutes. The default value is 10. If no traffic matches to the route after aging time, the system will age out the route and delete it from the routing table.

Subnet Mask

Specifies the mask for the proximity route. The system supports two mask formats: A.B.C.D and number. The value range of A.B.C.D is 255.0.0.0 to 255.255.255.255, the default value is 255.255.255.0; the value range of num is 8 to 32, the default value is 24.

Restore Default

Restores the settings to the default values.