Incompatible Trunking Modes
There are different administrative trunking modes an interface can be configured to use when forming a trunk, as follows:
Access: In this administrative mode, a switchport is manually configured to never become a trunk even if DTP messages are received. This mode is designed for ports that are connecting to, for example, end stations, servers, and printers, where a trunk should never be required because only a single VLAN is needed. This mode can be verified as shown in Example 4-6.
Trunk: In this administrative mode, ...
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