Operation Manual – VLANH3C S7500E Series Ethernet Switches Chapter 1 VLAN Configuration1-61.4 Configuring Port-Based VLAN1.4.1 Introduction to Port-Based VLANThis is the simplest and yet the most effective way of classifying VLANs. It groupsVLAN members by port. After added to a VLAN, a port can forward the packets of theVLAN.I. Port link typeBased on the tag handling mode, a port’s link type can be one of the following three:z Access port: the port only belongs to one VLAN, normally used to connect userdevice;z Trunk port: the port can belong to multiple VLANs, can receive/send packets formultiple VLANs, normally used to connect network devices;z Hybrid port: the port can belong to multiple VLANs, can receive or send packetsfor multiple VLANs, used to connect either user or network devices;The differences between Hybrid and Trunk port:z A Hybrid port allows packets of multiple VLANs to be sent without the Tag label;z A Trunk port only allows packets from the default VLAN to be sent without the Taglabel.II. Default VLANYou can configure the default VLAN for a port. By default, VLAN 1 is the default VLANfor all ports. However, this can be changed as needed.z An Access port only belongs to one VLAN. Therefore, its default VLAN is theVLAN it resides in and cannot be configured.z You can configure the default VLAN for the Trunk port or the Hybrid port as theycan both belong to multiple VLANs.z After deletion of the default VLAN using the undo vlan command, the defaultVLAN for an Access port will revert to VLAN 1, whereas that for the Trunk orHybrid port remains, meaning the port can use a nonexistent VLAN as the defaultVLAN.Note:For the voice VLAN in automatic mode, the default VLAN of the corresponding portcannot be configured as voice VLAN. Otherwise, the system prompts error information.For information about voice VLAN, refer to Voice VLAN Configuration.Configured with the default VLAN, a port handles packets in the following ways:
