The main distinction between access and truck

VLAN in the switch port type, by two differences are as follows:
1, uses different ports: port VLAN aggregation Truck port connected to the other switch ports, Port Access ports connected to VLAN switch to the host domain

2, trunk usually tag stripped, usually played only the marker tag through the vlan, the port may allow a plurality of vlan tag kept by the access port generally untag untagged port, and a access vlan port allows only one access vlan through.