Which command can you use to disable DTP negotiation on a switchport?

Disabling DTP (Dynamic Trunking Protocol) negotiation on a switchport is important for controlling how a port negotiates trunking with its neighboring device. The command "switchport nonegotiate" achieves this by explicitly disabling DTP for that interface. When this command is issued, the switchport will no longer send DTP packets to negotiate trunking with another switch device. As a result, the port relies on its configured mode (like trunk or access) without automatically negotiating its trunk status.

Issuing "switchport auto disable," "switchport mode access," or "switchport mode no negotiate" does not correctly disable DTP. For instance, "switchport mode access" simply configures the port as an access port, while "switchport auto disable" is not a valid command in the context of DTP negotiation. Understanding the specific functionality of the "nonegotiate" command is essential for effective trunk management and ensuring ports operate in the desired mode without unnecessary negotiation processes.