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4.5.1.
VLAN Management
4.5.1.a. Special Features
・ Corresponding to IEEE802.1Q Tag VLAN, the VLAN can send frames with a
VLAN tag (hereinafter, called as just "tag") attached.
・ It has two different parameters: VLAN ID and PVID. The destination of
untagged frames is determined by a combination of these parameters.
・ VLAN ID
The VLAN ID is a VLAN identifier attached to each frame when tagged frames are
handled. Also in case of untagged frames, ports are divided into group by this ID,
and a destination of frame forwarding is determined by referring to this ID. Multi-
ple VLAN IDs can be set to each port.
・ PVID (Port VLAN ID)
Only one PVID can be set to each port. When a untagged frame was received, this
ID determines to which VLAN ID the frame should be transferred. In case of a
tagged frame, this ID is not referred to, and the VLAN ID within the tag is used
instead.
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