Devices can map traffic to classes based on either the source or destination MAC organizationally unique identifiers (OUIs) in a packet. To configure this mapping, follow these steps:
If you do not see the MAC OUI that you want, select New and define one.
Permit allows traffic that matches the source MAC OUI to pass through the device. Deny blocks it. These actions in a QoS policy enable devices to enforce simple stateless firewall policies.
Logging is enabled by default, and helps you determine if the devices are receiving expected or unexpected types of traffic when you debug connectivity issues. You can see log entries in the event log on devices using the show logging buffer command. You can also configure the device to send logs to a syslog server where you can view log entries.