Lantech IES-22812F-2P, Руководство пользователя

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6.20 VLAN configuration
A Virtual LAN (VLAN) is a logical network grouping that limits the broadcast domain,
which would allow you to isolate network traffic, so only the members of the same
VLAN will receive traffic from the ones of the same VLAN. Basically, creating a VLAN
on a switch is logically equivalent of reconnecting a group of network devices to
another Layer 2 switch. However, all the network devices are still plugged into the
same switch physically.
6.20.1. Port-based VLAN
A port-based VLAN basically consists of its members—ports, which means 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.
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