GS748T Software User Manual
4.The following situations produce results as described:
•If an untagged packet enters Port 1, the switch tags it with a VLAN tag value 10. The packet has access to Port 2 and Port 3. The outgoing packet is stripped of its tag to leaves Port 2 as an untagged packet. For Port 3, the outgoing packet leaves as a tagged packet with a VLAN tag value of 10.
•If a tagged packet with a VLAN tag value 10 enters Port 3, the packet has access to Port 1 and Port 2. If the packet leaves Port 1 and/or Port 2, it is stripped of its tag to leave the switch as an untagged packet.
•If an untagged packet enters Port 4, the switch tags it with a VLAN tag value 20. The packet will have access to Port 5 and Port 6. The outgoing packet is stripped of its tag to become an untagged packet as it leaves Port 6. For Port 5, the outgoing packet leaves as a tagged packet with a VLAN tag value of 20.
Port-based VLANs
Packets received by the switch are treated in the following way:
•When a packet enters a port, it can only proceed to ports with the same VLAN membership as that ingress port.
•If a port on the switch does not have a common VLAN membership with the source port, the packet is dropped.
Port-based VLAN Example Configuration
This example basically demonstrates how the
•VLAN 1 (IT department)
•VLAN 2 (Sales department)
•VLAN 3 (Marketing department)
•VLAN 4 (Accounting department).
•Configure the VLAN membership. Be sure to set all of them as follows.
•Setting up second VLAN group (Sales), VLAN ID = 02, with membership of ports 1~8, 25.
Virtual Local Area Networks (VLANs) |
