HP Manager Software manual 384

384CHAPTER 10: STP COMMANDS

Table 71 Output for display spantree statistics

Field	Description
Port	Port number.
VLAN	VLAN ID.
Spanning Tree enabled	State of the STP feature on the VLAN.
for vlan
port spanning tree	State of the STP feature on the port.
state	STP state of the port:
	„ Blocking — The port is not forwarding Layer 2 traffic
	but is listening to and forwarding STP control traffic.
	„ Disabled — The port is not forwarding any traffic,
	including STP control traffic. The port might be
	administratively disabled or the link might be
	disconnected.
	„ Forwarding — The port is forwarding Layer 2 traffic.
	„ Learning — The port is learning the locations of other
	WX switches in the spanning tree before changing
	state to forwarding.
	„ Listening — The port is comparing its own STP
	information with information in STP control packets
	received by the port to compute the spanning tree and
	change state to blocking or forwarding.
port_id	STP port ID.
port_number	STP port number.
path cost	Cost to use this port to reach the root bridge. This is part
	of the total path cost (designated cost).
message age	Age of the protocol information for a port and the value of
	the maximum age parameter (shown in parenthesis)
	recorded by the switch.
designated_root	MAC address of the root bridge.
designated cost	Total path cost to reach the root bridge.
designated_bridge	Bridge to which this switch forwards traffic away from the
	root bridge.
designated_port	STP port through which this switch forwards traffic away
	from the root bridge.
top_change_ack	Value of the topology change acknowledgment flag in the
	next configured bridge protocol data unit (BPDU) to be
	transmitted on the associated port. The flag is set in reply
	to a topology change notification BPDU.