Specifications

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Item Meaning Displayed information
Down The port is in Down status. Indicates that the port is in Down status. If link
aggregation is used, this means that the channel
group is in Down status.
Boundary Boundary port Indicates that the port is the boundary port for the
region. If the role of the partner device port is
alternate port or backup port, the boundary port
might never receive BPDUs. In such cases, the port
is not displayed as the boundary port.
Compatible Compatible mode Indicates that the port is operating in compatible
mode for an MSTP Spanning Tree Protocol. Ports
operating in compatible mode do not perform rapid
status transitions.
Status Port state Discarding: Discarding
Learning: Learning
Forwarding: Indicates Forwarding status.
Disabled: Disabled
This parameter becomes Disabled if the port is in
the Down status.
Role The role of the port Root: Root port
Designated: Designated port
Alternate: Alternate port
Backup: Backup port
Master: Master port
If the port is in the Down status, a hyphen (-) is
displayed, because ports in this status are not
included in the topology calculations.
Priority Port priority Displays the value of the port priority setting for the
MST instance of the Switch. If the port is in the
Down status, a hyphen (-) is displayed.
Cost Port cost Displays the value of the port cost setting for the
MST instance of the Switch. If the port is in the
Down status, a hyphen (-) is displayed.
Link Type Link type of the line point-to-point: The line is a 1-to-1 connection.
shared: The line is a shared connection.
A hyphen (-) is displayed when Mode is STP or
when the port is in the Down status.
PortFast The PortFast status.
The status of receive
BPDUs is displayed
enclosed in parentheses.
OFF: PortFast is not operating.
ON: PortFast is operating.
BPDU Guard: The BPDU guard functionality is
being applied to PortFast. The receive status of
BPDUs is displayed when this item is On or BPDU
Guard.
 BPDU received (when PortFast is On: The
port is included in the calculations of the
Spanning Tree topology, when PortFast is
BPDU Guard: The port is down)
 BPDU not received (the port is not included
in the calculations of the Spanning Tree
topology)