INS_CNGE3FE7MS4_REV– Rev. 4.30.14 PAGE 52
INSTALLATION AND OPERATION MANUAL
CNGE3FE7MS4
TECH SUPPORT: 1.888.678.9427
VLAN
A Virtual LAN (VLAN) is a logical network grouping that limits the broadcast domain that
allows you to isolate network traffic. Only the members of the VLAN will receive traffic from the
same members of VLAN. Basically, creating a VLAN from a switch is the logical equivalent of
reconnecting a group of network devices to another Layer 2 switch. However, all the network
devices are still physically plugged into the same switch.
The switch supports port-based and 802.1Q (tagged-based) VLAN. The default configuration
of VLAN operation mode is “802.1Q”.
VLAN Setting - IEEE 802.1Q
Tagged-based VLAN is an IEEE 802.1Q specification standard, and it is possible to create a
VLAN across devices from different switch vendors. IEEE 802.1Q VLAN uses a technique to
insert a “tag” into the Ethernet frames. The Tag contains a VLAN Identifier (VID) that indicates
the VLAN numbers.
You can create Tag-based VLAN, and enable or disable GVRP protocol. There are 256 VLAN
groups to provide configure. Enable 802.1Q VLAN, the all ports on the switch belong to default
VLAN, VID is 1. The default VLAN cannot be deleted.
GVRP allows automatic VLAN configuration between the switch and nodes. If the switch is
connected to a device with GVRP enabled, you can send a GVRP request by using the VID of a
VLAN defined on the switch; the switch will automatically add that device to the existing VLAN.
VLAN Configuration – 802.1Q interface
