TP-Link T1600G-18TS Configuration Manual page 246

Configuring Spanning Tree
 Configuring Parameters on Ports in the Instance
Choose the menu Spanning Tree > MSTP Instance > Instance Port Config to load the
following page.
Figure 3-4 Configuring Port Parameters in the Instance
Follow these steps to configure port parameters in the instance:
1) In the Instance ID Select section, select the desired instance ID for its port
configuration.
Instance ID
2) In the Instance Port Config section, configure port parameters in the desired instance.
UNIT
Select the desired instance.
Select the desired unit or LAGs for configuration.
MSTP Configurations
Configuration Guide 223