Dell Force10 MXL Blade MXL 10/40GbE Switch IO Module FTOS Command Line Referen - Page 456
spanning-tree pvst
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www.dell.com | support.dell.com spanning-tree pvst Configure a PVST+ interface with one of the following settings: edge port with optional Bridge Port Data Unit (BPDU) guard, BPDU filter, port disablement if an error condition occurs, port priority or cost for a VLAN range, or root guard. Syntax spanning-tree pvst {edge-port [bpduguard [shutdown-on-violation] | bpdufilter] | err-disable | vlan vlan-range {cost number | priority value} | rootguard} Parameters edge-port bpduguard shutdown-on-vi olation bpdufilter err-disable vlan vlan-range cost number priority value rootguard Enter the keyword edge-port to configure the interface as a PVST+ edge port. (OPTIONAL) Enter the keyword bpduguard to disable the port when it receives a BPDU. (OPTIONAL) Enter the keyword shutdown-on-violation to hardware disable an interface when a BPDU is received and the port is disabled. (OPTIONAL) Enter the keyword bpdufilter to stop sending and receiving BPDUs on port fast enabled ports. Enter the keyword err-disable to enable the port to be put into error-disable state (EDS) if an error condition occurs. Enter the keyword vlan followed by the VLAN number(s). Range: 1 to 4094 Enter the keyword cost followed by the port cost value. Range: 1 to 200000 Defaults: 10-Gigabit Ethernet interface = 2000 40-Gigabit Ethernet interface = 1400 Port Channel interface with one 10-Gigabit Ethernet = 2000 Port Channel with two 10-Gigabit Ethernet = 1800 Port Channel with two 40-Gigabit Ethernet = 600 Enter the keyword priority followed the Port priority value in increments of 16. Range: 0 to 240. Default: 128 Enter the keyword rootguard to enable root guard on a PVST+ port or port-channel interface. Defaults Not Configured Command Modes INTERFACE Command History Version 8.3.16.1 Introduced on MXL 10/40GbE Switch IO Module Usage Information The BPDU guard option prevents the port from participating in an active STP topology in case a BPDU appears on a port unintentionally, or is misconfigured, or is subject to a DOS attack. This option places the port into an error disable state if a BPDU appears, and a message is logged so that the administrator can take corrective action. When BPDU guard and BPDU filter is enabled on the port, then BPDU filter takes the highest precedence. 456 | Per-VLAN Spanning Tree Plus (PVST+)