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I have this simple configuration, Switch0 is set to dynamic desirable and all others to dynamic auto. The three of them are using rapid-pvst on spanning tree (just mentioning it if it may be affecting) Since Switch0 is on dynamic desirable, it's DTPs...
Many thanks! I don't have physical cisco switches/hub to try out with, but I'll assume for now it was a packet tracer bug on showing the error when the frame arrived at switch 1&2 rather than on the replies of said DTPs towards switch 0
Thanks! Just one question, what is the FCS? Is there some documentation somewhere as to what are the DTP headers? I can't find it nor the RFC of DTP (dynamic trunk)
Thanks a lot! Very helpful, it makes sense.However just a tiny bit more, this issue does not happens when the switches replies to the BPDUs, it happens as soon as they received a BPDU, there are no replies.Iin packet tracer this is the order of the e...
