D-Link DES-1228/ME Reference Manual page 140

config scheduling
Purpose
Syntax
Description
Parameters
Restrictions
Example usage:
To configure the traffic scheduling mechanism of CoS queue 3 to strict:
DES-1228/ME:5#config scheduling 3 strict
Command: config scheduling 3 strict
Success.
DES-1228/ME:5#
DES-1228/ME Metro Ethernet Managed Switch CLI Reference Guide
Used to configure the traffic scheduling mechanism for each COS
queue.
config scheduling <class_id 0-3> [strict | weight <value 1-55>]
The Switch contains four hardware priority queues. Incoming packets
must be mapped to one of these four queues. This command is used to
specify the rotation by which these four hardware priority queues are
emptied.
The Switch's default (if the config scheduling command is not used) is
to empty the four hardware priority queues in order − from the highest
priority queue (hardware queue 3) to the lowest priority queue
(hardware queue 0). Each hardware queue will transmit all of the
packets in its buffer before allowing the next lower priority queue to
transmit its packets. When the lowest hardware priority queue has
finished transmitting all of its packets, the highest hardware priority
queue can again transmit any packets it may have received.
For projects support hybrid scheduling mode, this command can be
used to configure strict priority by class_id.
In hybrid scheduling mode, the CoS queues are divided into a SP
(Strict Priority) group and a WRR group, with the SP group given
higher precedence over the WRR group for scheduling as long as there
is a packet waiting in the SP group.
The setting of weight is effective when the operating mode is WRR for
the queue. The packet in the queue will be transmitted based on this
weight.
<class_id 0-3> − This specifies which of the four hardware priority
queues the config scheduling command will apply to. The four
hardware priority queues are identified by number − from 0 to 3 − with
the 0 queue being the lowest priority.
strict – Specifies the scheduling mechanism to strict.
weight <value 1-55> − Specifies the weights for weighted COS
queuing. A value between 1 and 55 can be specified.
Only Administrator level, Operator level or Power User level users can
issue this command.
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