There are two types of fair queue egress traffic scheduling, weighted fair queue (WFQ) and mixed strict priority (SP) and WFQ.
With WFQ destination-based scheduling enabled, some weight-based bandwidth is allocated to all queues. With this scheme, the configured weight distribution is guaranteed across all traffic leaving an egress port and an input port is guaranteed allocation in relationship to the configured weight distribution.
You can specify weighted for each VOQ if in WFQ mode.
This scheme provides a mixture of SP for the three highest priority queues and WFQ for the five remaining priority queues.