Allied Telesis AT-S63 - Manual (Page 310)

Chapter 19: Multiple Spanning Tree Protocol
310 Section IV: Spanning Tree Protocols
P2P
Whether or not the port is functioning as a point-to-point port. The
possible settings are Yes, No, and Auto-Detect.
Version
Whether the port is operating in MSTP mode or STP-compatible
mode.
Internal Port Cost
The port cost when the port is connected to a bridge in the same
MSTP region.
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