CISCO-CABLE-QOS-MONITOR-MIB
This is the MIB module for subscriber QoS monitoring for DOCSIS-compliant Cable Modem Termination Systems (CMTS). Several subscriber behavior can be monitored: 1. When the subscriber requests for more resources than as defined by its QoS parameter set. In this case, though requested for more rate-limiting happens in the CMTS, hence, the subscriber will get only as much resources as defined by its registered QoS parameter set. In this mib, QoS parameter set refers to QoS profiles for 1.0 modems and refer to service class names for 1.1 and 2.0 modems. 2. When the subscriber continuously utilizes the resources to the upper limit or very near to the upper limit as defined by its QoS parameter set. 3. When the subscriber sometimes or never utilizes the resources as defined by the upper limit of the QoS parameter set. In the first two cases, we need to monitor the subscribers as upstream/downstream is a shared medium, and if all subscribers start consuming resources as per their peak rate, or a percentage of it, CMTS will be hard pressed for resources. So, even though such subscribers are using resources within the limits as defined by their QoS parameter set, from the CMTS point of view, they are over consuming. Through out this MIB, we refer to this behavior of subscribers as over consumption of resources and such subscribers will be the violating subscribers. The subscriber QoS Monitoring is a software feature provided on the CMTS so that the CMTS may identify such subscribers who over consume resources based on their QoS parameter set, report them to a management entity, and automatically mitigate the problem where possible. This is done by penalizing the violating subscribers by changing their QoS parameter set to enforced QoS parameter set. The MIB allows to create enforce rules which are used to determine the over consumption of resources. The enforce rule contains monitoring and enforced QoS parameter set. The subscribers who over consume their bandwidth are flagged and NMS notified of all such violations. The MIB also provides a unified view of all over-consuming subscribers.