Netgear GS418TPP User Manual - Page 171

ProSAFE 8-Port or 16-Port Gigabit Smart Managed Switch Model GS418TPP, GS510TLP, and GS510TPP The following table describes the read-only MST port configuration information displayed on the Spanning Tree CST Configuration page. Table 43. MST port status information Field Description Auto-calculated Port Path Cost Indicates whether the path cost is automatically calculated (Enabled) or not (Disabled). Path cost is calculated based on the link speed of the port if the configured value for Port Path Cost is zero. Port ID The port identifier for the specified port within the selected MST instance. It is made up from the port priority and the interface number of the port. Port Up Time Since Counters The time since the counters were last cleared, displayed in days, hours, Last Cleared minutes, and seconds. Port Mode The Spanning Tree Protocol administrative mode that is associated with the port or port channel. The possible values are Enable and Disable. Port Forwarding State Indicates the current STP state of a port. If enabled, the port state determines what forwarding action is taken on traffic. Possible port states are as follows: • Disabled. STP is currently disabled on the port. The port forwards traffic while learning MAC addresses. • Blocking. The port is currently blocked and cannot be used to forward traffic or learn MAC addresses. • Listening. The port is currently in the listening mode. The port cannot forward traffic nor can it learn MAC addresses. • Learning. The port is currently in the learning mode. The port cannot forward traffic. However, it can learn new MAC addresses. • Forwarding. The port is currently in the forwarding mode. The port can forward traffic and learn new MAC addresses Port Role Each MST bridge port that is enabled is assigned a port role for each spanning tree. The port role is one of the following: Root Port, Designated Port, Alternate Port, Backup Port, Master Port, or Disabled Port. Designated Root The root bridge for the selected MST instance. It is made up using the bridge priority and the base MAC address of the bridge. Designated Cost The cost of the port participating in the STP topology. Ports with a lower cost are less likely to be blocked if STP detects loops. Designated Bridge The 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. Designated Port The 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. Configure Switching 171