Asus GigaX2024SX User Manual

Page 130

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should add this port to the VLAN as an untagged port.

VLAN-aware or VLAN-unaware

network interconnection devices, but the VLAN tags should be stripped off before


Note:
VLAN-tagged frames can pass through

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

omain of the frame.

lement 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

henever possible to fully automate VLAN registration.

ich

twork indicating the VLAN groups it wants to join. When this

witch receives these messages, it will automatically place the receiving port in

VLANs, and pass the message on to all other ports.

ghout the network. This

d

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 imp

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. However, you should use IEEE 802.3 tagged VLANs with GVRP
w

Automatic VLAN Registration
– GVRP (GARP VLAN Registration Protocol)
defines a system whereby the switch can automatically learn the VLANs to wh
each end station should be assigned. If an end station (or its network adapter)
supports the IEEE 802.1Q VLAN protocol, it can be configured to broadcast a
message to your ne
s
the specified VLANs, and then forward the message to all other ports. When the
message arrives at another switch that supports GVRP, it will also place the
receiving port in the specified
VLAN requirements are propagated in this way throu
allows GVRP-compliant devices to be automatically configured for VLAN groups
based solely on endstation requests.

3-105

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