GE -DSH-73 User Manual page 84

Chapter 5: Web-Based Management
VLAN Configuration
A Virtual LAN (VLAN) is a logical network grouping that limits the broadcast domain. It
allows you to isolate network traffic so only members of the VLAN receive traffic from
the same VLAN members. Basically, creating a VLAN from a switch is logically
equivalent of reconnecting a group of network devices to another Layer 2 switch.
However, all the network devices are still plug into the same switch physically.
The Industrial Switch supports Port-based, 802.1Q (Tagged-based) and GVRP VLAN in
web management page. In the default configuration, VLAN support is "Disable".
Figure 5-30: VLAN Configuration interface
Port-based VLAN
A port-based VLAN basically consists of its members-ports, which means that the
VLAN is created by grouping the selected ports. This method provides the
convenience for users to configure a simple VLAN easily without complicated steps.
Packets can go among only members of the same VLAN group. Note all unselected
ports are treated as belonging to another single VLAN. If the port-based VLAN
enabled, the VLAN-tagging is ignored. The port-based VLAN function allows the user
to create separate VLANs to limit the unnecessary packet flooding; however, for the
purpose of sharing resource, a single port called a common port can belongs to
different VLANs, which all the member devices (ports) in different VLANs have the
permission to access the common port while they still cannot communicate with
each other in different VLANs.
80 GE-DSH-73/DSH-82 and DSH-82-PoE User Manual