This section describes the allocation of QoS resources from the CAM pool allocated to the policy to access ingress QoS policies using the configure system resource-profile ingr-internal-tcam qos-access-port-ingress-resource command.
For every FC in use, the system allocates two classification entries from the qos-access-port-ingress-resource CAM pool: one entry for the unicast meter and one for the multicast meter. Regardless of the number of dot1p entries in the dot1p classification policy and IP DSCP entries in the DSCP classification policy that map to a specific FC name, a maximum of two entries are required for the FC. That is, if the user defines a dot1p classification policy with all seven dot1p values mapped to FC af, FC af needs only two classification entries in the CAM. An FC is considered to be in use if a dot1p classification entry, DSCP classification entry, or the default FC is mapped to the FC name.
For every meter or policer in use, the system allocates one meter in the hardware. A meter or policer is considered to be in use when it is associated with an FC that is in use.
The number of access ports that can be configured in access-ingress-qos-mode port-mode is limited by the number of classification resources available in the hardware and the number of access ports supported by the system.