Allied Telesis AT-S79 - Manual (Page 216)

Chapter 21: Rapid Spanning Tree Protocol (RSTP)
216 Section II: Web Browser Interface
Basic RSTP Configuration
To configure the RSTP settings, perform the following procedure:
1. From the Basic Config menu, select Rapid Spanning Tree and then
RSTP Config.
The Rapid Spanning Tree Configuration page is shown in Figure 63.
Figure 63. Rapid Spanning Tree Configuration Page
The RSTP Configuration page allows you to configure RSTP as well
as to view the current settings and contains the following items of
information in the middle portion:
Root Port
The active port on the switch that is communicating with the root
bridge. If the switch is the root bridge for the LAN, then there is no root
port and the root port parameter will be 0.
Root Path Cost
The sum of all the root port costs of all the bridges between the