Dell PowerConnect 3024 User Manual page 50

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Appendix
Dell™ PowerConnect™ 3024 Systems User's Guide
VLAN Description
VLAN Examples
Troubleshooting
Technical Specifications
Technical Assistance
Problems With Your Order
VLAN Description
Packets received by the switch are treated in the following ways:
When an untagged packet enters a port, the system automatically tags it with the port's default VLAN ID tag number. Each port has a default VLAN ID
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setting that is user configurable. The default setting is 1. You can change the default VLAN ID setting for each port from the Port Manager screen.
When a tagged packet enters a port, the default VLAN ID setting has no effect on the tag.
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The packet proceeds to the VLAN specified by its VLAN ID tag number.
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If the port in which the packet entered does not belong to the VLAN specified by the packet's VLAN ID tag, the system drops the packet.
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If the port belongs to the VLAN specified by the packet's VLAN ID, the system can send the packet to other ports with the same VLAN ID.
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NOTE: You can change port VLAN membership settings in the VLAN Membership screen.
Packets leaving the switch are either tagged or untagged depending on that port's membership properties.
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A U for a given port and VLAN means that packets leaving the switch from that port and VLAN are untagged. A T for a given port and VLAN means that
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packets leaving the switch from that port and VLAN are tagged with the respective ID for the VLAN to which that port belongs.
VLAN Examples
In the following two examples, example 1 steps through a simple two-group VLAN setup. Example 2 steps through a more elaborate setup illustrating all
possible scenarios for a comprehensive understanding of tagged VLANs.
Example 1
1. In the VLAN Administration page, add a new VLAN to the list, shown in the following illustration as New with a VLAN ID value of 2.
In the VLAN Membership page, use the space bar to toggle the matrix until the desired ports are all members of the selected VLAN.
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