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config scheduling
Purpose
Syntax
Description
Parameters
Restrictions
Example usage:
To configure the traffic scheduling mechanism for each queue:
DAS-3626:admin#config scheduling 3 strict
Command: config scheduling 3 strict
Success.
DAS-3626:admin#
DAS-3600 Series Ethernet over VDSL Switch CLI Reference Manual
Used to configure the traffic scheduling mechanism for each COS queue.
config scheduling <class_id 0-7> weight <value 1-127>
The Switch contains eight hardware priority queues. Incoming packets must be mapped to
one of these eight queues. This command is used to specify the rotation by which these eight
hardware priority queues are emptied.
The Priority scheduling implement on this Switch is Shaped Deficit Weighted Round Robin
(SDWRR) queue scheduling. The weight parameter allows the user to specify the available
bandwidth for each queue. In shaped WDRR, if two or more queues have traffic eligible for
transmission (i.e. the deficit counter is greater than the packet size to be transmitted), a
round-robin scheme among the queues is used, while still preserving the overall weight ratios
between the queues.. A value between 1 and 255 can be specified.
For example, to evenly divide up the available bandwidth among the queues in the SDWRR,
set the weight of each of the queues to 1, and the bandwidth of each queue are 12.5%. If the
desired bandwidth division is 40%, 20%, 10%, 10%, 5%, 5%, 5% and 5%, the weight
asignment to each queue is set to 8, 4, 2, 2, 1, 1, 1 and 1 respectively.
<class_id 0-7> − This specifies which of the eight hardware priority queues the config
scheduling command will apply to. The eight hardware priority queues are identified by
number − from 0 to 7 − with the 0 queue being the lowest priority.
weight <value 1-255> − Using weighted fair algorithm to handle packets in priority queues.
Means each queue will operate based on its setting of max_packet.
Only Administrator and Operator-level users can issue this command.
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