Managed Switch CLI Manual, Release 8.0.3
Switching Commands
3-26
v1.0, July 2010
show spanning-tree mst port detailed
This command displays the detailed settings and parameters for a specific switch port within a
particular multiple spanning tree instance. The parameter
<mstid>
is a number that corresponds
to the desired existing multiple spanning tree instance. The
<unit/slot/port
> is the desired
switch port.
Format
show spanning-tree mst port detailed
<mstid> <unit/slot/port>
Mode
• Privileged EXEC
• User EXEC
Term
Definition
MST Instance ID
The ID of the existing MST instance.
Port Identifier
The port identifier for the specified port within the selected MST instance. It is made up
from the port priority and the interface number of the port.
Port Priority
The priority for a particular port within the selected MST instance. The port priority is
displayed in multiples of 16.
Port Forwarding
State
Current spanning tree state of this port.
Port Role
Each enabled MST Bridge Port receives a Port Role for each spanning tree. The port
role is one of the following values: Root Port, Designated Port, Alternate Port, Backup
Port, Master Port or Disabled Port
Auto-Calculate
Port Path Cost
Indicates 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 offers 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.
