STP - Spanning Tree Protocol

switch(config)#spanning-tree mode pvst
switch(config)#spanning-tree mode rapid-pvst
switch(config)#spanning-tree vlan 10 root primary
switch(config)#spanning-tree vlan 20 root secondary
switch(config)#spanning-tree vlan 10 priority 4096
switch(config)#spanning-tree vlan 99 root primary diameter 5
switch(config)#interface fastethernet 0/18
switch(config-if)#spanning-tree cost 25
switch(config-if)#spanning-tree portfast
-> for access port. Also designates RSTP edge port.
switch(config-if)#spanning-tree port-priority 112 (default 128)
switch(config-if)#spanning-tree link-type point-to-point
switch#clear spanning-tree detected-protocols
-> clear all detected STP
switch#show spanning-tree vlan 10