User's Manual

VLAN C

ONFIGURATION

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• Passing traffic between VLAN-aware and VLAN-unaware devices

• Priority tagging

Assigning Ports to VLANs

Before enabling VLANs for the switch, you must first assign each port to

the VLAN group(s) in which it will participate. By default all ports are

assigned to VLAN 1 as untagged ports. Add a port as a tagged port if you

want it to carry traffic for one or more VLANs, and any intermediate

network devices or the host at the other end of the connection supports

VLANs. Then assign ports on the other VLAN-aware network devices

along the path that will carry this traffic to the same VLAN(s), either

manually or dynamically using GVRP. However, if you want a port on this

switch to participate in one or more VLANs, but none of the intermediate

network devices nor the host at the other end of the connection supports

VLANs, then you should add this port to the VLAN as an untagged port.

Note: VLAN-tagged frames can pass through VLAN-aware or

VLAN-unaware network interconnection devices, but the VLAN

tags should be stripped off before passing it on to any end-node

host that does not support VLAN tagging.

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.

VA: VLAN Aware

VU: VLAN Unaware

tagged frames

VA VUVA

tagged

frames

untagged

frames