H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 104)

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{
If no VLAN is available, the device tags the frame with the PVID of the receiving port and
forwards the frame.
• When the port receives a tagged frame, the port forwards the frame if the VLAN ID of the frame is
permitted by the port, or otherwise drops the frame.
Dynamic MAC-based VLAN assignment
When you cannot determine the target MAC-based VLANs of a port, you can use dynamic MAC-based
VLAN assignment on the port. To do that, you can create a MAC address-to-VLAN map containing
multiple MAC address-to-VLAN entries, and enable the MAC-based VLAN feature and dynamic
MAC-based VLAN assignment on the port.
Dynamic MAC-based VLAN assignment uses the following workflows:
• As shown in Figure 28 , when the port receives an untagged frame, the port processes the frame by
using the following guidelines:
{
If the frame matches a MAC address-to-VLAN entry configured on the port, the port dynamically
joins the corresponding MAC-based VLAN and forwards the frame.
{
If the frame does not match any MAC address-to-VLAN entry, the port assigns a VLAN to the
frame by using other criteria, such as IP subnet or protocol, and forwards the frame.
{
If no VLAN is available, the port tags the frame with the PVID and forwards the frame if the PVID
is permitted by the port, or otherwise drops the frame.
Figure 28 Flowchart for processing an untagged frame in dynamic MAC-based VLAN assignment
• When the port receives a tagged frame, the port forwards the frame if the VLAN ID of the frame is
permitted by the port, or otherwise drops the frame.