3com WX3000 Manuel D’Utilisation

 

1-7 

Set the maximum number of 
MAC addresses the port can 
learn 

mac-address 
max-mac-count count 

Required 

By default, the number of the 
MAC addresses a port can 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. 

 

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: 

Enter system view 

— 

Enter VLAN view 

vlan vlan-id 

— 

Disable the switch from learning 
MAC addresses in the VLAN 

mac-address 
max-mac-count 0 

Required 

By default, the device learns 
MAC addresses in every VLAN.

 

z 

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. 

z 

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.