PLANET MGSW-28240F - Manual (Page 129)

User’s Manual of MGSW-28240F
■ VLAN Classification
When the switch receives a frame, it classifies the frame in one of two ways. If the frame is untagged, the switch assigns the
frame to an associated VLAN (based on the default VLAN ID of the receiving port). But if the frame is tagged, the switch uses
the tagged VLAN ID to identify the port broadcast domain of the frame.
■ Port Overlapping
Port overlapping can be used to allow access to commonly shared network resources among different VLAN groups, such as
file servers or printers. Note that if you implement VLANs which do not overlap, but still need to communicate, you can connect
them by enabled routing on this switch.
■ Untagged VLANs
Untagged (or static) VLANs are typically used to reduce broadcast traffic and to increase security. A group of network users
assigned to a VLAN form a broadcast domain that is separate from other VLANs configured on the switch. Packets are
forwarded only between ports that are designated for the same VLAN. Untagged VLANs can be used to manually isolate user
groups or subnets.
4.6.3 VLAN Basic Information
The VLAN Basic Information page displays basic information on the VLAN type supported by the Managed Switch.
The VLAN Basic Information screen in Figure 4-6-1 appears.
Figure 4-6-1: VLAN Basic Information Page Screenshot
The page includes the following fields:
Object Description
 Mode Display the current VLAN mode used by this Managed Switch
 Port-Based
 IEEE 802.1Q VLAN
Maximum VLAN ID recognized by this Managed Switch.  Maximum VLAN ID
 Maximum Number of
Supported VLANs
Maximum number of VLANs that can be configured on this Managed Switch.
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