spanning-tree pvstConfigure a PVST+ interface with one of these settings: edge port with optional bridge port data unit (BPDU)guard, port disablement if an error condition occurs, port priority or cost for a VLAN range, loop guard, orroot guard.C9000 SeriesSyntax spanning-tree pvst {edge-port [bpduguard [shutdown-on-violation]]| err-disable | vlan vlan-range {cost number | priority value} |loopguard | rootguard}Parameters edge-port Enter the keywords edge-port to configure the interface as aPVST+ edge port.bpduguard Enter the keyword portfast to enable Portfast to move theinterface into Forwarding mode immediately after the root fails.Enter the keyword bpduguard to disable the port when itreceives a BPDU.shutdown-on-violation(OPTIONAL) Enter the keywords shutdown-on-violation tohardware disable an interface when a BPDU is received and theport is disabled.err-disable Enter the keywords err-disable to enable the port to be putinto the error-disable state (EDS) if an error condition occurs.vlan vlan-range Enter the keyword vlan then the VLAN numbers. The range isfrom 1 to 4094.cost number Enter the keyword cost then the port cost value. The range isfrom 1 to 200000.Defaults:• 10-Gigabit Ethernet interface = 2000.• Port Channel interface with one 10 Gigabit Ethernet =2000.• Port Channel with two 10 Gigabit Ethernet = 1800.priority value Enter the keyword priority then the Port priority value inincrements of 16. The range is from 0 to 240. The default is 128.loopguard Enter the keyword loopguard to enable loop guard on a PVST+port or port-channel interface.Per-VLAN Spanning Tree Plus (PVST+) 1647
