QoS (Quality of Service) scheduling determines the order of QoS profile service and varies between platforms. SummitStack and Summit family switches support three scheduling methods: strict-priority, weighted-round-robin, and weighted-deficit-round-robin. These scheduling methods are described in Scheduling. Scheduling can be applied globally or on a per-port or per-PortGroup basis. If no port_list or port_group is specified in the command, the global scheduling algorithm is set and applied to ports that are not configured via a port_list or port_group. Specifying a port_list or port_group in the command configures the scheduling algorithm for specific ports.
QoS profiles can also be overriden on a global, per-port or per-port_group basis. If no port_list or port_group is specified, the global qosprofile configuration is changed and applied to all ports that are not configured on a per-port or per-port_group basis.
Note
In a SummitStack, the scheduling algorithm is automatically programmed by ExtremeXOS for the stacking links only, and will likely be different than the algorithm you select.
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