Q: How does NE80 cope with that EF traffic exceeds bandwidth defined for port?
A: If the traffic is more than the EF part defined, NE80 defaults to discard it directly. The parameter weight in traffic command could help define the weight of the extra traffic in BE traffic. The parameter of weight is defaulted to 0, viz. without occupying the weight in BE traffic, so it will be discarded directly. For instance: [Quidway] traffic traffic1 cdr 120000 cbs 64000 weight ? INTEGER<1-100> Weight of WFQ [Quidway-Ethernet2/0/0] diffserv output-queue ef traffic5