Alloy Computer Products 16-PORT GIGABIT WEB SMART SWITCH GSS-16T2SFP - Manual (Page 25)

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4-2-3. VLAN Mode Configuration
The switch supports Port-based VLAN and Tag-based VLAN (802.1q) . 16
active VLANs can be support with VLAN ID’s from 1~4094. VLAN configuration is
used to partition your LAN into small broadcast domains (groups). Properly
configuring VLANS can improve your network security and increase network
performance by limiting broadcast propagation.
Function name:
VLAN Mode Setting
Function description:
There are 4 VLAN Modes: Port-based, Tag- based, Metro mode or Disabled.
These are selected from the drop down list. Selecting one will take affect
immediately.
Parameter description:
VLAN Mode:
Disable:
Disable all VLAN functions. This is the default setting.
Port-based:
Port-based VLAN simply groups ports together. Ports within the same
group can talk to each other ports not in the same group are blocked
from communicating. Any port can be a member of more than one
VLAN to enable shared server, internet or uplink ports. This switch can
support up to a maximal of 16 port-based VLAN groups.
Tag-based:
Tag-based VLAN identifies its members by a VID that is included in the
headers of packets sent and received. This is quite different from port-
based VLAN, in that Tagged VLANs can exist as groups across multiple
switches in your enterprise where as port VLANS are local only to the
switch that they are defined on. Port ingress (incoming) and egress
(outgoing) rules allow for filtering of packets that don’t conform to your
specific policies on accepting or denying non Tagged packets.
Each tag-based VLAN that is configured must be assigned a VLAN
name and a VLAN ID. Valid VLAN ID’s are from 1 to 4094.
Administrators can create a total of up to 16 Tag VLAN groups.