This read-create EsaProbePktIntervalType object sets the Y.1731/SLM-SLR packet interval type for this Class-of-Service configuration row, per its description. An administrator tunes this to balance measurement granularity against the extra bandwidth consumed by test packets, since a shorter interval yields more frequent SLA samples at the cost of more overhead traffic. For example, an operator monitoring a latency-sensitive CoS might choose a shorter esaProbeCOSConfigInterval to catch brief performance excursions that a longer interval would average out.