Subscriber volume statistics or octet and packet counters are available through the queues and policers that are instantiated for the subscriber. The queue and policer configuration is defined in the SLA profile using ingress and egress QoS policy associations with optional overrides. By default, subscriber hosts that belong to the same subscriber, that are active on the same SAP, and that have the same SLA profile share the set of queues and policers defined by that SPI. Alternatively, for bridged Residential Gateway scenarios, an SPI can be instantiated per subscriber session or per group identifier obtained during authentication. See SLA profile instance sharing for more details.