TP-Link T1600G-18TS Jetstream Smart Switches User Guide - Page 358

Configuring Spanning Tree MSTP Configurations Step 5 spanning-tree max-hops value (Optional) Specify the maximum BPDU hop counts that can be forwarded in a MST region. A switch receives BPDU, then decrements the hop count by one and generates BPDUs with the new value. When the hop reaches zero, the switch will discard the BPDU. This value can control the scale of the spanning tree in the MST region. 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. Step 6 show spanning-tree bridge (Optional) View the global parameters of the switch. Step 7 end Return to privileged EXEC mode. Step 8 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 Switch(config-if)#spanning-tree timer forward-time 12 Switch(config-if)#spanning-tree hold-count 8 Switch(config-if)#spanning-tree max-hops 25 Switch(config-if)#show spanning-tree bridge State Mode Priority Hello-Time Fwd-Time Max-Age Hold-Count Max-Hops -------- -------- Enable Mstp 36864 2 12 20 8 25 Switch(config-if)#end Switch#copy running-config startup-config User Guide 333