docs Mcast Cmts Group Cfg Table

This object controls the QoS, PHS and encryption settings for downstream forwarding of IP multicast sessions. An IP multicast session is replicated to one or more Downstream Channel Sets (DCSs), where each DCS is either a single downstream channel or a downstream bonding group of multiple channels. The CMTS determines on which DCSs to replicate a multicast session based on IP multicast membership reports ('joins') or other vendor-specific static configuration. The CmtsGrpCfg object allows for the configuration of a range of sessions through the SrcPrefixAddr and GrpPrefixAddr and SrcPrefixLen and GrpPrefixLen attributes. The CmtsGrpCfg object allows for the configuration of QoS, Encryption and PHS for multicast sessions. Cable operators can specify configuration rules for a range of multicast sessions through the tuple of (SrcPrefixAddr,SrcPrefixLen, GrpPrefixAddr, GrpPrefixLen) attributes in an entry. The QosConfigId attribute identifies the QoS rule, the EncryptionConfigId identifies the encryption rule and the PhsConfigId identifies the PHS rule for a particular entry. Even if an entry indicates a range of multicast sessions the Encryption and PHS rules are applied on a per-session basis. That is, a separate DSID is assigned to an individual multicast session from a range of multicast sessions identified by an entry in the CmtsGrpCfg object and a PHS rule (indicated by the PhsCfgId) is applied individually to each session which is identified by the DSID assigned for that session. Similarly, a separate SAID is assigned to individual multicast session from range identified by the CmtsGrpCfg object. The CmtsGrpQosConfigQosCtrl attribute from the CmtsGrpQosCfg object is used to determine if the traffic for a range of multicast sessions identified by an entry in the CmtsGrpCfg object will be transmitted in an 'Aggregate-Session' Group Service Flow or will be transmitted separately for each session using 'Single-Session' Group Service Flows. Even if the range of multicast sessions are transmitted on an 'Aggregate-Session' Group Service Flow, the PHS and Encryption rules are always applied individually to a multicast session on a per-session DSID basis prior to being transmitted on an 'Aggregate-Session' Group Service Flow (GSF). This object supports the creation and deletion of multiple instances. Creation of a new instance of this object requires the following attributes to be set RulePriority PrefixAddrType SrcPrefixAddr SrcPrefixLen GrpPrefixAddr GrpPrefixLen IpDsLow IpDsHigh IpDsMask