TP-Link T1500-28TC TL-SL2428 T1500-28TCUN V1 Configuration Guide - Page 205
Switch#con Switchconfig#spanning-tree priority
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Configuring Spanning Tree MSTP Configurations Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 spanning-tree timer {[ forward-time forward-time ] [ hello-time hello-time ] [ max-age max-age ]} (Optional) Configure the Forward Delay, Hello Time and Max Age. forward-time: Specify the value of Forward Delay. The valid values are from 4 to 30 in seconds, and the default value is 15. Forward Delay is the time for the port to transit its state after the network topology is changed. hello-time: Specify the value of Hello Time. The valid values are from 1 to 10 in seconds, and the default value is 2. The root bridge sends configuration BPDUs at an interval of Hello Time to check whether the links are failed. max-age: Specify the value of Max Age. The valid values are from 6 to 40 in seconds, and the default value is 20. Max Age is the maximum time the switch can wait without receiving a BPDU before attempting to regenerate a spanning tree. spanning-tree hold-count value (Optional) Configure the maximum number of BPDU packets transmitted per Hello Time interval. value: Specify the maximum number of BPDU packets transmitted per Hello Time interval. The valid values are from 1 to 20 pps, and the default value is 5. spanning-tree max-hops value (Optional) Configure the maximum number of hops that occur in a specific region before the BPDU is discarded. value: Specify the maximum number of hops that occur in a specific region before the BPDU is discarded. The valid values are from 1 to 40 in hop, and the default value is 20. show spanning-tree bridge (Optional) View the global parameters of the switch. end Return to privileged EXEC mode. copy running-config startup-config Save the settings in the configuration file. 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 This example shows how to configure the CIST priority as 36864, the Forward Delay as 12 seconds, the Hold Count as 8 and the Max Hop as 25: Switch#configure Switch(config)#spanning-tree priority 36864 Configuration Guide 184