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Automatic VLAN creation is done by enabling the Automatic VLAN Creation parameter on an individual port under the 'Module & Ports > Configuration > Switch Ports > name menu. With this parameter enabled, the port will automatically create a VLAN each time it receives a frame from an unknown VLAN ID in received IEEE 802.1Q and Multi-Layer tagged frames.
Note: The automatic VLAN creation feature does not create entries in 3Com Mapping Tables.
When a VLAN is created automatically the VLAN name and VLAN ID are derived from the received tagged frame. The VLAN name will be created as *autoVlan <VLAN ID>. The VLAN ID will be identical to the VLAN ID of the received tagged frame. As with all VLANs, the VLAN name may be modified to something more descriptive.
Table�52 shows the Avaya P580 and P882 Multiservice switch VLAN table. The VLANs Default and Discard are permanent VLANs assigned to every switch. VLAN Net90 is a manually created VLAN, while VLAN *autoVlan1001 was created automatically by software.
Table�51 describes the VLAN Binding field options.
| Option |
Description |
|---|---|
| Static |
Assigns VLAN membership manually, using the VLAN Switch Ports page described in "Creating and Implementing VLANs" in Chapter 6:�Using VLANs, Hunt Groups, and VTP Snooping. |
| Bind to All |
Binds this port to all VLANs known to the switch. This is an appropriate mode for switch-to-switch connections. Note: When a tagged IEEE 802.1Q packet arrives on a port that is set to bind to all and the VLAN does not exist on the switch, the packet is forwarded on to the VLAN assigned to the port default VLAN for that port. To prevent unintended forwarding of unknown VLAN traffic to the port's default VLAN, configure the port default VLAN to Discard. The automatic VLAN creation feature will not work if the port's default VLAN is the discard VLAN, because the switch does not learn for this VLAN. |
| Bind to Received |
Binds this port to any VLAN it receives traffic from. Note: If Automatic VLAN Creation is enabled, the port binds to previously unknown VLANs and a VLAN entry is added to the switch VLAN table. If Automatic VLAN Creation is disabled, the port does not bind to any VLAN unknown to the switch. |
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