Allied Telesis AT-S63 - Manual (Page 336)

Chapter 20: Multiple Spanning Tree Protocol
336 Section IV: Spanning Tree Protocols
Table 11 lists the MSTP port costs with the Auto setting when the port
is part of a port trunk.
Edge Port
This parameter defines whether the port is functioning as an edge port.
The possible settings are Yes and No. For an explanation of this
parameter, refer to “Point-to-Point and Edge Ports” in Chapter 23,
“Spanning Tree and Rapid Spanning Tree Protocols” in the AT-S63
Management Software Menus Interface User’s Guide.
8. After configuring the parameters, click Apply.
9. From the Configuration menu, select the Save Config option to
permanently save your changes. (This option is not displayed if there
are no changes to save.)
10. Repeat this procedure to configure MSTP parameters for other switch
ports.
Table 11. MSTP Auto External Path Trunk Costs
Port Speed Port Cost
10 Mbps 20,000
100 Mbps 20,000
1000 Mbps 2,000