H3C Technologies H3C S7500E Series Switches - Manual (Page 225)

15-17
With MAC-based dynamic port assignment enabled, packets with unknown source MAC
addresses are sent to the CPU for processing. Because this packet processing mode has the
highest priority, the configuration of MAC learning limit and disabling MAC address learning
becomes invalid. Therefore, it is recommended not to configure these two features if MAC-based
dynamic port assignment is enabled.
In MAC-based dynamic port assignment, the port that receives a packet with an unknown source
MAC address can be successfully assigned to the matched VLAN only when the matched VLAN
is a static VLAN.
With MSTP enabled, if the MSTP instance for the corresponding VLAN is blocked, packets with
unknown source MAC addresses will fail to be sent to the CPU. As a result, the receiving port will
not be dynamically assigned to the corresponding VLAN. Since MAC-based dynamic port
assignment is mainly configured on the access side, it is recommended not to configure it together
with MSTP.
Do not enable MAC-based dynamic port assignment together with 802.1X or MAC authentication.
When a MAC address ages, the receiving port automatically leaves the VLAN to which it was
dynamically assigned to. For more information about MAC address aging, see MAC Address
Table Configuration in the Layer 2 - LAN Switching Configuration Guide.
To do... Use the command... Remarks
Enter system view system-view —
Associate MAC addresses
with a VLAN
mac-vlan mac-address
mac-address vlan vlan-id [ priority
priority ]
Required
Enter Ethernet
interface view
interface interface-type
interface-number
Enter
Ethernet
interface
view or port
group view
Enter port
group view
port-group manual
port-group-name
Use either command.
In Ethernet interface view, the
subsequent configurations apply only
to the current port; in port group view,
the subsequent configurations apply
to all ports in the port group.
Configure the link type of the
port(s) as hybrid
port link-type hybrid Required
Enable MAC-based VLAN mac-vlan enable
Required
Disabled by default
Enable MAC-based dynamic
port assignment
mac-vlan trigger enable
Optional
Disabled by default