TP-Link T1500-28TC TL-SL2428 T1500-28TCUN V1 Configuration Guide - Page 182
Parameters Config, Apply, Global Config, enable spanning tree function
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Configuring Spanning Tree STP/RSTP Configurations Follow these steps to configure STP/RSTP globally: 1) In the Parameters Config section, configure the global parameters of STP/RSTP and click Apply. CIST Priority Specify the CIST priority of the switch. The valid values are from 0 to 61440, which are divisible by 4096.By default, it is 32768. The switch with the lower value has the higher priority. CIST priority is usually a parameter configured in MSTP, which means the priority of a switch in CIST. The switch with the highest priority will be elected as the root bridge in CIST. In STP/RSTP, CIST priority means the priority of a switch in the spanning tree. The switch with the highest priority is elected as the root bridge. Hello Time Specify the interval to send BPDUs. The valid values are from 1 to 10 in seconds, and the default value is 2. Max Age Specify the maximum time the switch can wait without receiving a BPDU before attempting to regenerate a spanning tree. The valid values are from 6 to 40 in seconds, and the default value is 20. Forward Delay Specify the time for the port to transit its state after the network topology is changed. The valid values are from 4 to 30 in seconds, and the default value is 15. TxHoldCount Specify the maximum BPDU transmission rate of a port. The valid values are from 1 to 20, and the default value is 5. Max Hops Specify the scale of an MST region. Note: Max Hops is a parameter configured in MSTP. You need not configure it if the spanning tree mode is STP/RSTP. Note: To prevent frequent network flapping, make sure that Hello Time, Forward Delay, and Max Age conform to the following formulas: • 2*(Hello Time + 1) = Max Age 2) In the Global Config section, enable spanning tree function, choose the STP mode as STP/RSTP, and click Apply. Spanning-Tree Enable or disable spanning tree function globally on the switch. Configuration Guide 161