Cisco SRW2024P User Guide - Page 51
Global Setting
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Chapter 5 Advanced Configuration Spanning Tree > STP Status The STP Status screen describes the STP status on the device. Last Topology Change Indicates the amount of time that has elapsed since the bridge was initialized or reset, and the last topographic change occurred. The time is displayed in a day hour minute second format, for example, 2 days 5 hours 10 minutes and 4 seconds. Spanning Tree > Global STP The Global STP screen contains parameters for enabling STP on the device. Spanning Tree > STP Status Spanning Tree State Indicates if STP is enabled on the device. Spanning Tree Mode Indicates the STP mode by which STP is enabled on the device. Bridge ID Identifies the Bridge priority and MAC address. Designated Root Indicates the ID of the bridge with the lowest path cost to the instance ID. Root Port Indicates the port number that offers the lowest cost path from this bridge to the Root Bridge. It is significant when the Bridge is not the Root. The default is 0. Root Path Cost The cost of the path from this bridge to the root. Root Maximum Age (sec) Indicates the device Maximum Age Time. The Maximum Age Time indicates the amount of time in seconds a bridge waits before sending configuration messages. The default max age is 20 seconds. The range is 6-40 seconds. Root Hello Time (sec) Indicates the device Hello Time. The Hello Time indicates the amount of time in seconds a root bridge waits between configuration messages. The default is 2 seconds. The range is 1-10 seconds. Root Forward delay (sec) Indicates the device forward delay time. The Forward Delay Time indicates the amount of time in seconds a bridge remains in a listening and learning state before forwarding packets. The default is 15 seconds. The range is 4-30 seconds. Topology Changes Counts Indicates the total amount of STP state changes that have occurred. WebView Switches Spanning Tree > Global STP Global Setting Spanning Tree State Indicates if STP is enabled on the device. STP Operation Mode Indicates the STP mode by which STP is enabled on the device. The possible field values are: •• Classic STP Enables Classic STP on the device. This is the default value. •• Rapid STP Enables Rapid STP on the device. •• Multiple STP Enables Multiple STP on the device. BPDU Handling Determines how BPDU packets are managed when STP is disabled on the port/device. BPDUs are used to transmit spanning tree information. The possible field values are: •• Filtering Filters BPDU packets when spanning tree is disabled on an interface. This is the default value. •• Flooding Floods BPDU packets when spanning tree is disabled on an interface. 44