D-Link DGS-1510-28P User Manual - Page 488
mls qos scheduler, Parameters, Default, Command Mode, Command Default Level, Usage Guideline
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DGS-1510 Series Gigabit Ethernet SmartPro Switch CLI Reference Guide This example shows how to map DSCP 30 to the mutated DSCP value 8, DSCP 20 to the mutated DSCP 10, with the mutation map named "mutemap1". Switch# configure terminal Switch(config)# mls qos map dscp-mutation mutemap1 30 to 8 Switch(config)# mls qos map dscp-mutation mutemap1 20 to 10 Switch(config)# 54-11 mls qos scheduler This command is used to configure the scheduling mechanism. Use the no command to reset the packet scheduling mechanism to the default. mls qos scheduler {sp | rr | wrr | wdrr} no mls qos scheduler Parameters sp rr wrr wdrr Specifies that all queues are in strict priority scheduling. Specifies that all queues are in round-robin scheduling. Specifies the queues in the frame count weighted round-robin scheduling. If the weight of a queue be configured to zero, the queue is in the SP scheduling mode. Specifies the queues of all ports in the frame length (quantum) weighted deficit round-robin scheduling. If the weight of a queue be configured to zero, the queue is in the SP scheduling mode. Default The default queue scheduling algorithm is WRR. Command Mode Interface Configuration Mode. Command Default Level Level: 12. Usage Guideline Specify schedule algorithms to WRR, SP, RR or WDRR for the output queue. By default, the output queue scheduling algorithm is WRR. WDRR operates by serving an accumulated set of backlogged credits in the transmit queue in a round robin order. Initially, each queue sets its credit counter to a configurable quantum value. Every time a packet from a CoS queue is sent, the size of the packet is subtracted from the corresponding credit counter and the service right is turned over to the next lower CoS queue. When the credit counter drops below 0, the queue is no longer serviced until its credits are replenished. When the credit counters of all CoS queues reaches 0, the credit counters will be replenished at that time. All packets are serviced until their credit counter is zero or negative and the last packet is transmitted completely. When this condition happens, the credits are replenished. When the credits are replenished, a quantum of credits are added to each CoS queue credit counter. The quantum for each CoS queue may be different based on the user configuration. To set a CoS queue in the strict priority mode, any higher priority CoS queue must also be in the strict priority mode. 485
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