Port has three modes: Access, Hybrid, Trunk .
access port can belong to a character vlan, and the port has not play tag, trunk can belong to several vlan, can receive and send packets of a plurality vlan, is generally connected to the switch; Hybrid may belong to a plurality of vlan, vlan can receive and send a plurality of packets may be used for connection between the switch may also be used to connect between the switch and the user's computer. The difference is mainly trunk and hybrid, hybrid port allows the packets of multiple vlan untagged, but a trunk port only allows packets from the default vlan without tags, hybrid and trunk can not coexist on the same switch.