TP-Link T2600G-18TSTL-SG3216 T2600G-18TSUN V1 Configuration Guide - Page 343

Configuring Spanning Tree Priority Path Cost Port Role Port Status LAG MSTP Configurations Enter the value of port priority from 0 to 240, which is divisible by 16, and the default value is 128. The port with the lower value has the higher priority. In the same condition, the port with the highest priority will be elected as the root port in the desired instance. Enter the value of the path cost. The default setting is Auto, which means the port calculates the path cost automatically according to the port's link speed. It is the path cost of the port in the desired instance. The port with the lowest path cost will be elected as the root of the desired instance. Displays the role that the port plays in the desired instance. Root Port: Indicates the port is the root port. Designated Port: Indicates the port is the designated port . Alternate Port: Indicates the port is a backup of a root port. Backup Port: Indicates the port is a backup of a designated port. Disabled: Indicates the port is not participating in the spanning tree. Displays the port status. Forwarding: The port receives and sends BPDUs, and forwards user data. Learning: The port receives and sends BPDUs, and drops the other packets. Blocking: The port only receives BPDUs and drops the other packets. Disconnected: The port is enabled with spanning tree function but not connected to any device. Displays the LAG which the port belongs to. Configuration Guide 313