Dell PowerSwitch S4820T FTOS 8.3.19.0 Command Line Reference Guide for the S48 - Page 1202
spanning-tree pvst err-disable, tc-flush-standard
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www.dell.com | support.dell.com spanning-tree pvst err-disable c e s Place ports in an err-disabled state if they receive a PVST+ BPDU when they are members an untagged VLAN. Syntax Defaults Command Modes Command History Usage Information Related Commands spanning-tree pvst err-disable cause invalid-pvst-bpdu Enabled; ports are placed in err-disabled state if they receive a PVST+ BPDU when they are members of an untagged VLAN. INTERFACE version 8.3.19.0 Version 8.3.7.0 Version 8.2.1.0 Introduced on S4820T Introduced on S4810 Introduced Some non-Dell Force10 systems which have hybrid ports participating in PVST+ transmit two kinds of 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. show spanning-tree pvst View the PVST+ configuration. tc-flush-standard c e s Enable the MAC address flushing upon receiving every topology change notification. Syntax Defaults Command Modes Command History tc-flush-standard To disable, use the no tc-flush-standard command. Disabled CONFIGURATION version 8.3.19.0 Version 8.3.7.0 Version 7.6.1.0 Introduced on S4820T Introduced on S4810 Support added for S-Series 1202 | Per-VLAN Spanning Tree Plus (PVST+)