DGS-3100 Series Gigabit Stackable Managed Switch CLI Manual
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More: <space>, Quit: q, One line: <return>l
config scheduling_mechanism
Purpose To configure the scheduling mechanism for the QoS function.
Syntax
config scheduling_mechanism <class_id 0-3> [strict |
round_robin]
Description The config scheduling_mechanism command configures the
scheduling mechanism for the QoS function. It allows the user to
select between a round robin (WRR) and a strict mechanism for
emptying the priority classes of service of the QoS function. The
Switch contains four hardware priority classes of service. Incoming
packets must be mapped to one of these four hardware priority
classes of service, or queues. This command is used to specify the
rotation by which these four hardware priority queues are emptied.
The Switch’s default is to empty the four hardware priority queues in
order − from the highest priority hardware queue (class 3) to the
lowest priority hardware queue (class 0). Each queue will transmit all
of the packets in its buffer before allowing the next lower priority
queue to transmit its packets. A lower priority hardware queue will
be pre-empted from emptying its queue if a packet is received on a
higher priority hardware queue. The packet received on the higher
priority hardware queue transmits its packet before allowing the
lower priority hardware queue to resume clearing its queue.
Parameters <class_id 0-3> – This specifies to which of the four hardware
classes of service the config scheduling_mechanism command
applies. The four hardware classes of service are identified by
number (from 0 to 3), with the 0 queue having the lowest priority.
strict – Specifies that the highest class of service is the first to be
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