Reference Guide

Column Meaning
Auto-Calculate Port Path
Cost
Whether auto calculation for port path cost is enabled.
Port Path Cost Configured value of the Internal Port Path Cost parameter.
Designated Root The Identifier of the designated root for this port.
Root Path Cost The path cost to get to the root bridge for this instance. The root path cost is zero if
the bridge is the root bridge for that instance.
Designated Bridge Bridge Identifier of the bridge with the Designated Port.
Designated Port Identifier Port on the Designated Bridge that oers the lowest cost to the LAN.
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.
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.
Column
Meaning
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 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
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 oers the lowest cost to the LAN.
Topology Change
Acknowledgment
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.
Switching Commands
ExtremeSwitching 200 Series: Command Reference Guide for version 01 .02.04.0007 308