Allied Telesis AT-IFS802SP Switch User Manual


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52 AT-IFS802SP/POE(W)-80 User Manual
VLAN—Port Based Edit/Delete interface
Use to delete the VLAN.•
Use to modify group name, VLAN ID, or add/remove the members of the existing •
VLAN group.
Delet e
E d i t
[note]
Remembertoexecutethe“SaveConguration”action,otherwisethenew
congurationwilllosewhenswitchpoweroff.
Virtual Local Area Network (VLAN) can be implemented on the switch to logically create
different broadcast domain.
When the 802.1Q VLAN function is enabled, all ports on the switch belong to default VLAN of
VID 1, which means they logically are regarded as members of the same broadcast domain. The
valid VLAN ID is in the range of number between 1 and 4094. The amount of VLAN groups is
up to 256 including default VLAN that cannot be deleted.
Each member port of 802.1Q is on either an Access Link (VLAN-tagged) or a Trunk Link (no
VLAN-tagged).AllframesonanAccessLinkcarrynoVLANidentication.Conversely,allframes
on a Trunk Link are VLAN-tagged. Besides, there is the third mode—Hybrid. A Hybrid Link can
carry both VLAN-tagged frames and untagged frames. A single port is supposed to belong to
one VLAN group, except it is on a Trunk/Hybrid Link.
The technique of 802.1Q tagging inserts a 4-byte tag, including VLAN ID of the destination port—
PVID, in the frame. With the combination of Access/Trunk/Hybrid Links, the communication
across switches also can make the packet sent through tagged and untagged ports.
6.18.2 802.1Q VLAN
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