Allied Telesis AT-IFS802SP manual 18.2 802.1Q Vlan

52 AT-IFS802SP-80 User Manual

VLAN—Port Based Edit/Delete interface

• Use Delete to delete the VLAN.

•Use Edit to modify group name,VLAN ID, or add/remove the members of the existing VLAN group.

[note]

Remember to execute the “Save Configuration” action, otherwise the new configuration will lose when switch power off.

6.18.2 802.1Q VLAN

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 noVLAN identification. 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,includingVLAN 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.