I read that in order to disable sending DTP frames, we issue "switchport nonegotiate".
But, why do we need it if we already specified that the port is in access or tunk mode already? setting a port to access or trunk disables trunk negotiation, doesn't it?
A port statically set to trunk mode still sends DTP packets to inform the other side to also activate the trunk mode. Only a port set to access mode does not send DTP packets.