The user can apply an aggregate rate limit to the Vport and apply a port scheduler policy to the port.
This model allows the user to oversubscribe the Ethernet port. The application of the agg-rate option and the application of a port scheduler policy, or a scheduler policy to a Vport are mutually exclusive.
When using this model, a subscriber host queue with the port-parent option enabled is scheduled within the context of the port’s port scheduler policy. More details are provided in the 7450 ESS, 7750 SR, and VSR Triple Play Service Delivery Architecture Guide.