Hello, before you proceed on the instruction please check first the product version since this is more accurate in version 8.0.35.

link-load balancing route can be used to prevent wasting bandwidth.

There are four types of policy for link-load balancing as follows:

Requirements: All internal network users will go to the external network through
eth1. The method being chosen here is Prefer Link at Top.
Configuration:
Step 1. Fill in the policy name (Any will do)
Step 2. Source Zone (where the internal network user is located)
Step 3. Source IP (All)
Step 4. Destination IP group (All)

Step 5. Select HTTP application in the Application
Step 6. Interface (Select eth1 and eth3)
Step 7. Others can be kept as default Sample Configuration:

I hope you did it right.

Hello, before you proceed on the instruction please check first the product version since this is more accurate in version 8.0.35.

link-load balancing route can be used to prevent wasting bandwidth.

There are four types of policy for link-load balancing as follows:

Requirements: All internal network users will go to the external network through
eth1. The method being chosen here is Prefer Link at Top.
Configuration:
Step 1. Fill in the policy name (Any will do)
Step 2. Source Zone (where the internal network user is located)
Step 3. Source IP (All)
Step 4. Destination IP group (All)

Step 5. Select HTTP application in the Application
Step 6. Interface (Select eth1 and eth3)
Step 7. Others can be kept as default Sample Configuration:

I hope you did it right.