For packets received on the front-panel interfaces and delivered to the CPU interface, this feature allows creation of a profile to configure buffer reservations for the egress CPU queues in the MMU (MMU = Memory Management Unit which manages how the on-chip packet buffers are organized).

For packets sent and received on the front-panel interfaces, this feature allows creation of a profile to configure buffer reservations in the MMU (MMU = Memory Management Unit which manages how the on-chip packet buffers are organized). The profile can contain configurations for ingress and egress. On the ingress, configuration is supported at both a port level as well as a priority-group level. 

When an interface is overloaded with packets and goes beyond its buffering capabilities, packet drops become