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DES-3028 DES-3028P DES-3052 DES-3052P Layer 2 Fast Ethernet Switch CLI Reference Manual
show scheduling
scheduling mechanisms in use on the Switch.
Parameters None.
Restrictions None.
Example usage:
To display the current scheduling configuration:
DES-3028P:4# show scheduling
Command: show scheduling
QOS Output Scheduling
Class ID Weight
------------ -------------------
Class-0 1
Class-1 2
Class-2 4
Class-3 8
DES-3028P:4#
config scheduling_mechanism
Purpose Used to configure the scheduling mechanism for the QoS function
Syntax
config scheduling_mechanism [strict | weight_fair]
Description The config scheduling_mechanism command allows the user to select
between a weight fair and a Strict mechanism for emptying the priority
classes of service of the QoS function. The Switch contains seven
hardware priority classes of service. Incoming packets must be mapped
to one of these seven hardware priority classes of service. This
command is used to specify the rotation by which these seven hardware
priority classes of service are emptied.
The Switch’s default is to empty the seven priority classes of service in
order − from the highest priority class of service (queue 6) to the lowest
priority class of service (queue 0). Each queue will transmit all of the
packets in its buffer before allowing the next lower priority class of
service to transmit its packets. Lower classes of service will be pre-
empted from emptying its queue if a packet is received on a higher class
of service. The packet that was received on the higher class of service
will transmit its packet before allowing the lower class to resume clearing
its queue.
Parameters strict – Entering the strict parameter indicates that the highest class of
service is the first to be processed. That is, the highest class of service
should finish emptying before the others begin.
weight_fair – Entering the weight fair parameter indicates that the priority
classes of service will empty packets in a fair weighted order. That is to
say that they will be emptied in an even distribution.
Restrictions Only administrator-level users can issue this command.
Example usage:
To configure the traffic scheduling mechanism for each QoS queue:
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