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Untagged VID:
Tagged VID:
Access Link
Because the access port doesn't have an understanding of tagged frame, the column field of
Tagged VID is not available.
Trunk Link
1.
A trunk port doesn't insert tag into an untagged frame, and therefore the untagged VID
column field is not available.
2.
It's not necessary to type '1' in the tagged VID. The trunk port will forward the frames of
VLAN 1.
3.
The trunk port has to be connected to a trunk/hybrid port of the other switch. Both the
tagged VID of the two ports have to be the same.
A segment which provides the link path for one or more stations to the
VLAN-aware device. An Access Port (untagged port), connected to the access
link, has an untagged VID (also called PVID). After an untagged frame gets
into the access port, the switch will insert a four-byte tag in the frame. The
contents of the last 12-bit of the tag is untagged VID. When this frame is sent
out through any of the access port of the same PVID, the switch will remove
the tag from the frame to recover it to what it was. Those ports of the same
untagged VID are regarded as the same VLAN group members.
Trunk Link:
A segment which provides the link path for one or more VLAN-aware devices
(switches). A Trunk Port, connected to the trunk link, has an understanding of
tagged frame, which is used for the communication among VLANs across
switches. Which frames of the specified VIDs will be forwarded depends on the
values filled in the Tagged VID column field. Please insert a comma between
two VIDs.
Hybrid Link:
A segment which consists of Access and Trunk links. The hybrid port has both
the features of access and trunk ports. A hybrid port has a PVID belonging to a
particular VLAN, and it also forwards the specified tagged-frames for the
purpose of VLAN communication across switches.
This column field is available when Link Type is set as Access Link and Hybrid
Link. Assign a number in the range between 1 an 4094.
This column field is available when Link Type is set as Trunk Link and Hybrid
Link. Assign a number in the range between 1 an 4094.
User's Manual of ISW-1022M
74
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