Dynamic Trunking Protocol Configuration Result

D

The Cisco Dynamic Trunking Protocol (DTP) is a Cisco proprietary protocol that allows switches to dynamically negotiate trunking on a link between switches. When two switches are connected, the DTP negotiation occurs, and the switches communicate their DTP settings. The two DTP settings are:

• Dynamic Auto: This setting enables the switch port to negotiate the trunking state with the remote switch port. If the remote switch port is set to Dynamic Desirable or On, the local port becomes a trunk port. If the remote switch port is set to Access or Dynamic Auto, the local port becomes an access port.

• Dynamic Desirable: This setting enables the switch port to actively attempt to convert the link into a trunk link. If the remote switch port is set to Dynamic Auto, the local port becomes a trunk port. If the remote switch port is set to Dynamic Desirable or On, the local port becomes a trunk port.

Given the above DTP settings, when SW1 is set to Dynamic Auto and SW2 is set to Dynamic Desirable, the result of this configuration is that the link becomes a trunk port. SW2 is actively attempting to convert the link into a trunk link, and SW1 allows the negotiation to occur, resulting in a trunk link being established between the two switches.

Therefore, the correct answer is option D, "The link becomes a trunk port."