csubAggStatsEntry 1.3.6.1.4.1.9.9.786.1.2.1.1

An entry contains a set of aggregated statistics relating to those subscriber sessions that fall into a 'scope of aggregation'. A 'scope of aggregation' is the set of subscriber sessions that meet specified criteria. For example, a 'scope of aggregation' may be the set of all PPPoE subscriber sessions maintained by the system. The following criteria define the 'scope of aggregation': 1) Aggregation Point type Aggregation point type identifies the format of the csubAggStatsPoint for this entry. 2) Aggregation Point 'Physical' Aggregation Point type case: In a distributed system, a 'node' represents a physical entity capable of maintaining the context representing a subscriber session. If the 'scope of aggregation' specifies a physical entity having an entPhysicalClass of 'chassis', then the set of subscriber sessions in the 'scope of aggregation' may contain the subscriber sessions maintained by all the nodes contained in the system. If the 'scope of aggregation' specifies a physical entity having an entPhysicalClass of 'module' (e.g., a line card), then the set of subscriber sessions in the 'scope of aggregation' may contain the subscriber sessions maintained by the nodes contained by the module. If the 'scope of aggregation' specifies a physical entity having an entPhysicalClass of 'cpu', then the set of subscriber sessions in the 'scope of aggregation' may contain the subscriber sessions maintained by the node running on that processor. Observe that a centralized system (i.e., a system that essentially contains a single node) can only support a 'scope of aggregation' that specifies a physical entity classified as a 'chassis'. If the scope of aggregation specifies 'interface', then the scope is the set of subscriber sessions carried by the interface identified the ifIndex value represented in the csubAggStatsPoint value. 2) Subscriber Session Type If the 'scope of aggregation' specifies the value 'all' for the subscriber session type, then the set of subscriber sessions in the 'scope of aggregation' may contain all subscriber sessions, regardless of type. If the 'scope of aggregation' specifies a value other than 'all' for the subscriber session type, then the set of subscriber sessions in the 'scope of aggregation may contain only those subscriber sessions of the specified type. Implementation Guidance ======================= A system MUST maintain a set of statistics with a 'scope of aggregation' that contains all subscriber sessions maintained by the system. The system creates this entry during the initialization of the SNMP entity. A system SHOULD maintain a set of statistics for each 'scope of aggregation' containing subscriber sessions of each subscriber session type the system is capable of providing access. If the system supports these sets of statistics, then it creates these entries during the initialization of the SNMP entity. A system MAY maintain sets of node-specific statistics. if the system supports sets of node-specific statistics, then it creates the appropriate entries upon detection of a physical entity (resulting from system restart or insertion) containing those nodes. Likewise, the system destroys these entries upon removal of the physical entity.