Dell Force10 MXL Blade MXL 10/40GbE Switch IO Module FTOS Command Line Referen - Page 457
spanning-tree pvst err-disable
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By default bpdu filtering on an interface is disabled. Note: A port configured as an edge port, on a PVST switch, will immediately transition to the forwarding state. Only ports connected to end-hosts should be configured as an edge port. Consider an edge port similar to a port with a spanning-tree portfast enabled. Example Figure 24-8. spanning-tree pvst vlan Command Example FTOS(conf-if-te-1/1)#spanning-tree pvst vlan 3 cost 18000 FTOS(conf-if-te-1/1)#end FTOS(conf-if-te-1/1)#show config ! interface TenGigabitEthernet 1/1 no ip address switchport spanning-tree pvst vlan 3 cost 18000 no shutdown FTOS(conf-if-te-1/1)#end FTOS# Related Commands show spanning-tree pvst View PVST+ configuration spanning-tree pvst err-disable Place ports in an err-disabled state if they receive a PVST+ BPDU when they are members an untagged VLAN. Syntax spanning-tree pvst err-disable cause invalid-pvst-bpdu Defaults Enabled; ports are placed in err-disabled state if they receive a PVST+ BPDU when they are members of an untagged VLAN. Command Modes INTERFACE Command History Version 8.3.16.1 Introduced on MXL 10/40GbE Switch IO Module Usage Some non-Dell Force10 systems which have hybrid ports participating in PVST+ transmit two kinds of Information BPDUs: an 802.1D BPDU and an untagged PVST+ BPDU. Dell Force10 systems do not expect PVST+ BPDU on an untagged port. If this happens, FTOS places the port in error-disable state. This behavior might result in the network not converging. To prevent FTOS from executing this action, use the command no spanning-tree pvst err-disable cause invalid-pvst-bpdu. Related Commands show spanning-tree pvst View the PVST+ configuration. Per-VLAN Spanning Tree Plus (PVST+) | 457