Hi Peter,thank you for your elaborate answer. I almost always learn something, when reading your posts or attending your sessions.I assume you tested the defective behavior you describe in your own lab, since the screenshot of the packet capture I sh...

Hi Peter,after playing a bit around with the interface configuration, we found the reason: It is the voice VLAN. As soon as we remove theswitchport voice vlan 2010stanza, we can observe IEEE-compatible BPDUs for the access VLAN on the port:switch(con...

@Peter Paluch wrote:on access ports, Cisco sends entirely standard BPDUs without any 802.1Q tags and without any PVID TLVs.Hi Peter,curiously I can only observe untagged PVST+ BPDUs sent to the PVST+ Destination Multicast MAC 01:00:0c:cc:cc:cd contai...