D-Link DGS-1510 User Manual - Page 148

DGS-1510 Series Gigabit Ethernet SmartPro Switch Web UI Reference Guide The field that can be configured for Spanning Tree State is described below: Parameter Spanning Tree State Description Select this option to enable or disable the STP global state here. Click the Apply button to accept the changes made. The fields that can be configured for STP Traps are described below: Parameter STP New Root Trap STP Topology Change Trap Description Select this option to enable or disable the STP new root trap option here. Select this option to enable or disable the STP topology change trap option here. Click the Apply button to accept the changes made. The fields that can be configured for STP Mode are described below: Parameter STP Mode Description Select the STP mode used here. Options to choose from are MSTP, RSTP, and STP. Click the Apply button to accept the changes made. The fields that can be configured for Spanning Tree Priority are described below: Parameter Priority Description Select the STP priority value here. This value is between 0 and 61440. By default, this value is 32768. The lower the value, the higher the priority. Click the Apply button to accept the changes made. The fields that can be configured for Spanning Tree Configuration are described below: Parameter Bridge Max Age Bridge Hello Time Bridge Forward Time Description Enter the bridge's maximum age value here. This value must be between 6 and 40 seconds. By default, this value is 20 seconds. The maximum age value may be set to ensure that old information does not endlessly circulate through redundant paths in the network, preventing the effective propagation of the new information. Set by the Root Bridge, this value will aid in determining that the Switch has spanning tree configuration values consistent with other devices on the bridged LAN. After selecting RSTP/STP as the STP Mode, this parameter will be available. Enter the bridge's hello time value here. This value must be between 1 and 2 seconds. By default, this value is 2 seconds. This is the interval between two transmissions of BPDU packets sent by the Root Bridge to tell all other switches that it is indeed the Root Bridge. This field will only appear here when STP or RSTP is selected for the STP Version. For MSTP, the Hello Time must be set on a port per port basis. Enter the bridge's forwarding time value here. This value must be between 4 and 30 seconds. By default, this value is 15 seconds. Any port on the Switch spends this time in the listening state while moving from the blocking state to the forwarding state. 137