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LGB624A
Chapter 3: Software Description
• 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.
3.3.4.2 RSTP Port Status
Figure 3-29. RSTP port status screen.
• 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 auto-detection.
NOTE: If the switch detects another bridge connected to this port, the manual
setting for Edge Port will be overridden, and the port will instead function
as a point-to-point connection.