Netgear GS516TP Software Administration Manual - Page 74

GS516TP Gigabit Smart Switches CST Port Status To display Common Spanning Tree (CST) and Internal Spanning Tree on a specific port on the switch, use the Spanning Tree CST Port Status screen. To display the Spanning Tree CST Port Status screen, select Switching > STP > Advanced > CST Port Status. To view CST settings for an interface, click PORTS, LAGS, or All. The following table describes the CST Status information displayed on the screen. Table 16. CST Status Information. Field Interface Port Role Designated Root Designated Cost Designated Bridge Designated Port Edge Port Point-to-point MAC CST Regional Root CST Path Cost Port Forwarding State Description Select a physical or port channel interface to configure. The port is associated with the VLANs associated with the CST. Each MST Bridge Port that is enabled is assigned a port role for each spanning tree. The port role can be one of the following values: Root, Designated, Alternate, Backup, Master, or Disabled. Root bridge for the CST. It is made up using the bridge priority and the base MAC address of the bridge. Displays cost of the port participating in the STP topology. Ports with a lower cost are less likely to be blocked if STP detects loops. Bridge identifier of the bridge with the designated port. It is made up using the bridge priority and the base MAC address of the bridge. Port identifier on the designated bridge that offers the lowest cost to the LAN. It is made up from the port priority and the interface number of the port. Indicates whether the port is enabled as an edge port. Possible values are Enabled and Disabled. Derived value of the point-to-point status. Displays the bridge priority and base MAC address of the CST regional root. Displays the path cost to the CST tree regional root. Displays the forwarding state of this port. 74