Edimax Technology ES-5240G+ - Manual (Page 17)

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Case1: All switch ports are in the same local area network. Every port can access
each other (See Fig. 2-2).
If the VLAN is enabled and configured, each node in the network that can
communicate each other directly is bounded to the same VLAN area.
The VLAN area is defined by which VLAN you are on. The switch supports
both port-based VLAN and tag-based VLAN. They are different in practical
deployment, especially in physical location. The following diagram shows how it
works and what the differences are.
Case2a: Port-based VLAN (See Fig.2-3).
1. The same VLAN members can not be connected to different switches.
2. Every VLAN member can not access VLAN members from other VLAN
group.
3. The network administrator has to assign different names for every VLAN
group on one switch.
Fig. 2-2 No VLAN Configuration Diagram
Fig. 2-3 Port-based VLAN Diagram