RSTP VLAN Bridge Overview
Hello Time: Interval (in seconds) at which the root device transmits a configuration message.
Max Age: The maximum time (in seconds) a device can wait without receiving a configuration message before attempting to reconfigure. All device ports (except designated ports) should receive configuration messages at regular intervals. Any port that ages out STA information (provided in the last configuration message) becomes the designated port for the attached LAN. If it is a root port, a new root port is selected from among the device ports attached to the network.
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Fwd Delay: The maximum time (in seconds) the root device will wait before changing states (i.e., discarding to learning to forwarding). This delay is required because every device must receive information about topology changes before it starts to forward frames. In addition, each port needs time to listen for conflicting information that would make it return to a discarding state; otherwise, temporary data loops might result.
Topology: Indicates if Spanning Tree topology is steady or undergoing reconfiguration. (The time required for reconfiguration is extremely short, so no values other than “steady” state are likely to be seen in this field.)
Root ID: The priority and MAC address of the device in the Spanning Tree that this switch has accepted as the root device, and the port connected to the root device.
RSTP Port Status
Port/Group: The number of a port or the ID of a static trunk.
Path Cost: The cost for a packet to travel from this port to the root in the current Spanning Tree configuration. The slower the media, the higher the cost.
Edge Port: Shows if this port is functioning as an edge port, either through manual
selection (see the RSTP Port Configuration table) or
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