The value of tnPmonTcasubgroup identifies a TCA subgroup within a specific pmon policy. Port PMON policy: subgroup = 1 for port TCAs; subgroup = 2..9 for port egress queue1-8 TCAs; subgroup = 10 for EMAC; subgroup = 11 for PMAC; subgroup = 12 for MMAC; SAP PMON policy: subgroup = 1 for SAP TCAs; subgroup = 2..33 for meter TCAs; SLM/DM PMON policy: subgroup = 1. ROE PMON policy: subgroup = 1 for roe TCA; subgroup = 2 for roe MAPPER TCA; subgroup = 3 for roe DE-MAPPER TCA;