Command Reference Guide

Spanning Tree Protocol Commands
CLI Command Reference
September 2014 Page 292
HP Moonshot Switch Module CLI Command Reference
If you specify 0 (defined as the default CIST ID) as the mstid, this command displays the settings and parameters
for a specific switch port within the common and internal spanning tree. The
unit/slot/port is the desired
switch port. In this case, the following are displayed.
Term Definition
Port Identifier The port identifier for this port within the CST.
Port Priority The priority of the port within the CST.
Port Forwarding State The forwarding state of the port within the CST.
Port Role The role of the specified interface within the CST.
Auto-Calculate Port Path
Cost
Indicates whether auto calculation for port path cost is enabled or not (disabled).
Port Path Cost The configured path cost for the specified interface.
Auto-Calculate External
Port Path Cost
Indicates whether auto calculation for external port path cost is enabled.
External Port Path Cost The cost to get to the root bridge of the CIST across the boundary of the region.
This means that if the port is a boundary port for an MSTP region, then the
external path cost is used.
Designated Root Identifier of the designated root for this port within the CST.
Root Path Cost The root path cost to the LAN by the port.
Designated Bridge The bridge containing the designated port.
Designated Port Identifier Port on the Designated Bridge that offers the lowest cost to the LAN.
Topology Change
Acknowledgement
Value of flag in next Configuration Bridge Protocol Data Unit (BPDU) transmission
indicating if a topology change is in progress for this port.
Hello Time The hello time in use for this port.
Edge Port The configured value indicating if this port is an edge port.
Edge Port Status The derived value of the edge port status. True if operating as an edge port; false
otherwise.
Point To Point MAC Status Derived value indicating if this port is part of a point to point link.
CST Regional Root The regional root identifier in use for this port.
CST Internal Root Path
Cost
The internal root path cost to the LAN by the designated external port.
Loop Inconsistent State The current loop inconsistent state of this port in this MST instance. When in loop
inconsistent state, the port has failed to receive BPDUs while configured with loop
guard enabled. Loop inconsistent state maintains the port in a blocking state until
a subsequent BPDU is received.
Transitions Into Loop
Inconsistent State
The number of times this interface has transitioned into loop inconsistent state.
Transitions Out of Loop
Inconsistent State
The number of times this interface has transitioned out of loop inconsistent state.