HP GbE2c - Blc Layer 2/3 Fiber SFP Option Cli Reference Manual page 32

Port number and priority
Cost
State
Port Fast Forwarding state
Designated bridge
Designated port
The following table describes the STP parameters.
Table 22 STP parameters
Parameter Description
Shows information about the root bridge for the Spanning Tree. Information includes the priority
Current Root
(hex) and MAC address of the root.
Path-cost is the total path cost to the root bridge. It is the summation of the path cost between
Path-Cost
bridges (up to the root bridge).
The current root port refers to the port on the switch that receives data from the current root.
Port
Zero (0) indicates the root bridge of the STP.
The bridge priority parameter controls which bridge on the network will become the STP root
Priority (bridge)
bridge.
The hello time parameter specifies, in seconds, how often the root bridge transmits a
Hello
configuration bridge protocol data unit (BPDU). Any bridge that is not the root bridge uses the
root bridge hello value.
The maximum age parameter specifies, in seconds, the maximum time the bridge waits without
MaxAge
receiving a configuration bridge protocol data unit before it reconfigures the STP network. If the
bridge is not the root bridge, it uses the
The forward delay parameter specifies, in seconds, the amount of time that a bridge port has to
FwdDel
wait before it changes from learning state to forwarding state. If the bridge is not the root
bridge, it uses the
The aging time parameter specifies, in seconds, the amount of time the bridge waits without
Aging
receiving a packet from a station before removing the station from the Forwarding Database.
The port priority parameter helps determine which bridge port becomes the designated port. In
Priority (port)
a network topology that has multiple bridge ports connected to a single segment, the port with
the lowest port priority becomes the designated port for the segment.
The port path cost parameter is used to help determine the designated port for a segment.
Cost
Generally speaking, the faster the port, the lower the path cost.
The State field shows the current state of the port. The State field can be one of the following:
State
BLOCKING, LISTENING, LEARNING, FORWARDING, or DISABLED.
Shows information about the bridge connected to each port, if applicable. Information includes
Designated bridge
the priority (hex) and MAC address of the Designated Bridge.
The port ID of the port on the Designated Bridge to which this port is connected. This information
Designated port
includes the port priority (hex) and the port number (hex).
MaxAge
value of the root bridge.
FwdDel
value of the root bridge.
Information Commands 32