3Com WX3000 Disabling MAC Address learning for a Vlan, Mac-address, Max-mac-count count

To do…	Use the command…	Remarks
Set the maximum number of		Required
	mac-address	By default, the number of the
MAC addresses the port can
	max-mac-count count	MAC addresses a port can learn
learn
		is not limited.

Specifying the maximum number of MAC addresses a port can learn disables centralized MAC address authentication and port security on the port. On the other hand, if you enable centralized MAC address authentication and port security on a port, you cannot specify the maximum number of MAC addresses the port can learn.

Disabling MAC Address learning for a VLAN

You can disable a switch from learning MAC addresses in specific VLANs to improve stability and security for the users belong to these VLANs and prevent unauthorized accesses.

Follow these steps to disable MAC address learning for a VLAN:

To do…	Use the command…	Remarks
Enter system view	system-view	—
Enter VLAN view	vlan vlan-id	—
Disable the switch from learning	mac-address	Required
		By default, the device learns
MAC addresses in the VLAN	max-mac-count 0
		MAC addresses in every VLAN.

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If the VLAN is configured as a remote probe VLAN used by port mirroring, you can not disable MAC address learning of this VLAN. Similarly, after you disable MAC address learning, this VLAN can not be configured as a remote probe VLAN.

Disabling the MAC address learning function of a VLAN takes no effect on enabling the centralized MAC address authentication on the ports that belong to the VLAN.

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