D-Link 3324SRi Reference Manual - Page 115
Combination Queue, DGS-3324SRi:4# config scheduling 0 max_packet 15
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xStack Gigabit Layer 3 Switch Command Line Interface Manual config scheduling Parameters Restrictions Entering a 0 into the field of the max_packet parameter allows for the creation of a Combination Queue for the forwarding of packets. This Combination Queue allows for a combination of strict and weight-fair (weighted round-robin "WRR") scheduling. Priority classes that have a 0 in the max_packet field will forward packets with strict priority scheduling. The remaining classes, that do not have a 0 in their max_packet field, will follow a weighted round-robin (WRR) method of forwarding packets - as long as the priority classes with a 0 in their max_packet field are empty. When a packet arrives in a priority class with a 0 in its max_packet field, this class will automatically begin forwarding packets until it is empty. Once a priority class with a 0 in its max_packet field is empty, the remaining priority classes will reset the weighted round-robin (WRR) cycle of forwarding packets, starting with the highest available priority class. Priority classes with an equal level of priority and equal entries in their max_packet field will empty their fields based on hardware priority scheduling. − Specifies which of the seven hardware priority classes the config scheduling command will be applied to. The seven priority classes are identified by number − from 0 to 6 − with queue 6 being the highest priority. max_packet − Specifies the maximum number of packets the above specified priority class will be allowed to transmit per weighted round-robin (WRR) cycle. A value between 0 and 15 packets can be specified. A zero (0) denotes strict priority scheduling for that priority class. Only administrator-level users can issue this command. NOTICE: The default QoS scheduling arrangement is a strict priority schedule. To customize scheduling to set up weighted or round-robin class clearing, the max_packets values need to be changed. Example usage: To configure traffic scheduling: DGS-3324SRi:4# config scheduling 0 max_packet 15 Command: config scheduling 0 max_packet 15 Success. DGS-3324SRi:4# Example usage: To configure a Combination Queue with a Class 6 priority class with strict priority and the remaining classes as weighted round robin (WRR) scheduling: 107