HP A5120 EI Series Configuration Manual page 121

NOTE:

With dynamic MAC-based VLAN assignment enabled, packets are delivered to the CPU for processing. The
packet processing mode has the highest priority and overrides the configuration of MAC learning limit and
disabling of MAC address learning. When dynamic MAC-based VLAN assignment is enabled, do not configure
the MAC learning limit or disable MAC address learning.

Do not use dynamic MAC-based VLAN assignment together with 802.X and MAC authentication.

In dynamic MAC-based VLAN 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 a port is blocked in the MST instance (MSTI) of the target MAC-based VLAN, the port
drops the received packets, instead of delivering them to the CPU. As a result, the receiving port will not be
dynamically assigned to the corresponding VLAN. Do not configure dynamic MAC-based VLAN assignment
together with MSTP, because the former is mainly configured on the access side.

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 the chapter ―MAC address table
configuration.‖
Follow these steps to configure dynamic MAC-based VLAN assignment:
To do...
Enter system view
Associate MAC addresses
with a VLAN
Enter
Ethernet
interface
view or
port group
view
Configure the link type of the
port(s) as hybrid
Enable MAC-based VLAN
Configure VLAN matching
precedence
Enable dynamic MAC-based
VLAN assignment
Disable the PVID of the port
from forwarding source-
unknown packets that do not
match any MAC address-to-
VLAN mapping
Configuring dynamic MAC-based VLAN
Use the command...
system-view
mac-vlan mac-address mac-address
vlan vlan-id [ priority priority ]
Enter Ethernet interface interface-type interface-
interface view number
Enter port
port-group manual port-group-name
group view
port link-type hybrid
mac-vlan enable
vlan precedence { mac-vlan | ip-
subnet-vlan }
mac-vlan trigger enable
port pvid disable
Remarks
—
Required
Use either command.


Required
Required
Disabled by default
Optional
By default, VLANs are preferably
matched based on MAC addresses.
Required
Disabled by default
Optional
By default, source MAC unknown
packets are forwarded in the PVID
of the incoming port if they do not
match any MAC address-to-VLAN
mapping.
114
The configuration made in
Ethernet interface view applies
only to the current port.
The configuration made in port
group view applies to all ports in
the port group.