Lancom ES-2126+ Manual page 88

LANCOM ES-2126+ and LANCOM ES-2126P+
Chapter 4: Operation of Web- based Management
Parameter Description:
STP State: Show the current STP Enabled / Disabled status. Default is
"Disabled".
Bridge ID: Show switch's bridge ID which stands for the MAC address
of this switch.
Bridge Priority: Show this switch's current bridge priority setting.
Default is 32768.
Designated Root: Show root bridge ID of this network segment. If this
switch is a root bridge, the "Designated Root" will show this switch's
bridge ID.
Designated Priority: Show the current root bridge priority.
Root Port: Show port number connected to root bridge with the
lowest path cost.
Root Path Cost: Show the path cost between the root port and the
designated port of the root bridge.
Current Max. Age: Show the current root bridge maximum age time.
Maximum age time is used to monitor if STP topology needs to
change. When a bridge does not receive a hello message from root
bridge until the maximum age time is counted down to 0, the bridge
will treat the root bridge malfunctioned and issue a Topology Change
Notification (TCN) BPDU to all other bridges.
All bridges in the LAN will re-learn and determine which the root
bridge is. Maximum Age time is assigned by root bridge in unit of
seconds. Default is 20 seconds.
Current Forward Delay: Show the current root bridge forward delay
time. The value of Forward Delay time is set by root. The Forward
Delay time is defined as the time spent from Listening state moved to
Learning state or from Learning state moved to Forwarding state of a
port in bridge.
Hello Time: Show the current hello time of the root bridge. Hello time
is a time interval specified by root bridge, used to request all other
bridges periodically sending hello message every "hello time" seconds
to the bridge attached to its designated port.
STP Topology Change Count: STP Topology Change Count expresses
the time spent in unit of seconds since the beginning of the Spanning
Tree Topology Change to the end of the STP convergence. Once the
STP change is converged, the Topology Change count will be reset to
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