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DNswitch 800 Configuring and Monitoring the Switch 21
Spanning Tree Information
The Spanning Tree Information screen displays a summary of the STA
information for the overall bridge or for a specific port. To make any
changes to the parameters for the Spanning Tree, use the STA
Configuration and STA Port Configuration screens.
Spanning Tree
The parameters shown in the following figure and table describe the
current bridge STA Information.
Figure 3-13. STA Information - Spanning Tree
Parameter Description
Spanning Tree
State
Shows if the switch is enabled to participate in an STA-
compliant network.
Bridge ID A unique identifier for this bridge, consisting of bridge priority
plus MAC address (where the address is normally taken from
Port 1).
Max Age The maximum time (in seconds) a device can wait without
receiving a configuration message before attempting to
reconfigure.
Hello Time The time interval (in seconds) at which the root device transmits
a configuration message.
Forward Delay The maximum time (in seconds) the root device will wait before
changing states (i.e., listening to learning to forwarding).
Root Port The number of the port on this switch that is closest to the root.
This switch communicates with the root device through this
port. If there is no root port, then this switch has been accepted
as the root device of the spanning tree network.
Designated Root The priority and MAC address of the device in the spanning tree
that this switch has accepted as the root device.
Root Path Cost The path cost from the root port on this switch to the root device.
Configuration
Changes
The number of times the spanning tree has been reconfigured.
Last Topology
Change
The time since the spanning tree was last reconfigured.