What it Does

In an environment where FortiNAC manages a large number of devices and ports, the best practice on switches that support SNMP MAC notification traps is to use these traps, instead of the standard linkUp and linkDown traps, to increase performance. When MAC Notification traps are implemented, FortiNAC does not have to read the forwarding tables of the switches each time a host connects or disconnects from the network.

MAC Notification traps contain MAC and connection data embedded in the traps. Networks using switches in the following situations may benefit from using MAC notification traps:

• An excessive number of switch ports, where performance would improve by changing the trap configuration, or

• Host connection and disconnection from the network do not generate linkUp and linkDown traps, such as, VoIP: where clients connect to the network behind IP Phones or Access Point Management (HUBs).