TP-Link Jetstream T1500G-8T User Manual page 334

Configuring Spanning Tree
Figure 2-3 Verifying the STP/RSTP Configurations
The STP Summary section shows the summary information of spanning tree :
Spanning Tree
Spanning Tree Mode
Local Bridge
Root Bridge
External Path Cost
Regional Root Bridge
Internal Path Cost
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Displays the status of the spanning tree function.
Displays the spanning tree mode.
Displays the bridge ID of the local bridge. The local bridge is the current switch.
Displays the bridge ID of the root bridge.
Displays the root path cost from the switch to the root bridge.
It is the root bridge of IST. It is not displayed when you choose the spanning tree
mode as STP/RSTP.
The internal path cost is the root path cost from the switch to the root bridge of
IST. It is not displayed when you choose the spanning tree mode as STP/RSTP.
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STP/RSTP Configurations
User Guide 311