The value of vRtrMldIfMcacValuesInTransit indicates that the operational (available and in-use mandatory/optional) value for the following objects are in transition due to configuration change: vRtrMldIfMcacAvailMandBw vRtrMldIfMcacAvailOpnlBw vRtrMldIfMcacinUseMandBw vRtrMldIfMcacinUseOpnlBw When Multicast CAC Policy is applied on the interface for the join of the next channel, the operational values will be recalculated and applied to the above objects and the value for vRtrMldIfMcacValuesInTransit will be set to 'false'. If the value of vRtrMldIfMcacValuesInTransit is 'true' then the values are in transition.
Sources for this description
Netdisco MIB archive copiesNokia networking MIB copies (LibreNMS/Observium Community)