Dahua PFS4218-16GT-190 Web Config Manual page 13

Select General > Aggregation, and the Aggregation interface is displayed. See Figure 3-4.
Step 1 Add the port member to the static group. For example, add port 1 and port 2 to Static
Group 1. See Figure 3-5.
Up to 13 static groups can be set at the same time.
Step 2 Click Save.
The port 1 and port 2 form the logical port.
Figure 3-4 Aggregation
Figure 3-5 Static group
General Settings 6