Planet IGS-801 [53/120] User s manual of igs 801m

User’s Manual of IGS-801M

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.

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 tha

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.

erlapping can be used to allow access to commonly shared network resources among different VLAN groups, such

Untagged (or static) VLANs are typically used to reduce broadcast traffic and to increase security. A group of network

sers assigned to a VLAN form a broadcast domain that is separate from other VLANs configured on the switch. Packets

een ports that are designated for the same VLAN. Untagged VLANs can be used to manually

■ Port Overlapping

Port ov

as file servers or printers. Note that if you implement VLANs which do not overlap, but still need to communicate, you can

connect them by enabled routing on this switch.

■ Untagged VLANs

are forwarded only betw

isolate user groups or subnets.