D-Link DES-3010F Command Line Interface Manual page 113

config scheduling
Purpose
Syntax
Description
Parameters
Restrictions
Example usage:
To configure traffic scheduling:
DES-3026:4#config scheduling 3 weight 15
Command: config scheduling 3 weight 15
Success.
DES-3026:4#
DES-3000 Series Layer 2 Switch CLI Reference Manual
Used to configure traffic scheduling for each of the Switch's QoS queues.
config scheduling <class_id 0-3> {weight <value 1-55}
The Switch contains four hardware priority classes of service per device. The
Switch's default settings draw down the four hardware classes of service in order,
from the highest class (Class 3) to the lowest class (Class 0). Starting with the
highest priority class of service (Class 3), the highest priority class of service will
transmit all of the packets and empty its buffer before allowing the next lower priority
class of service to transmit its packets. The next highest priority class of service will
empty before proceeding to the next class of service and so on. Lower priority
classes of service are allowed to transmit only if the higher priority classes of service
in the buffer are completely emptied. Packets in the higher priority classes of service
are always emptied before any in the lower priority classes of service regardless of
latency or volume of the lower priority classes of service.
The default settings for QoS scheduling employ this strict priority scheme to empty
priority classes of service.
The config scheduling command can be used to specify the round robin rotation by
which these four hardware priority classes of service are reduced.
The weight parameter allows specification of the maximum number of packets a
given priority classes of service can transmit before allowing the next lowest priority
queue to begin transmitting its packets. A value between 0 and 55 packets can be
specified. For example, if a value of 5 is specified, then the highest priority class of
service (queue 3) will be allowed to transmit 5 packets. Then the next lower priority
class of service (queue 2) will be allowed to transmit 5 packets, and so on, until all of
the classes of service have transmitted 5 packets. The process will then repeat.
<class_id>  Specifies which of the four priority classes of service to which the
config scheduling command will be applied. The four priority classes of service are
identified by number  from 0 to 3  with class 3 being the highest priority.
weight <value 1-55>  Specifies the maximum number of packets the above
specified priority class of service will be allowed to transmit before allowing the next
lowest priority classes of service to transmit its packets. A value between 1 and 55
packets can be specified. The default value is per class is:
Class Weight
0 1
1 2
2 4
3 8
Only Administrator-level users can issue this command.
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