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config scheduling
transmitted 3 packets. The process will then repeat.
The max_latency
parameter allows you to specify the maximum
amount of time that packets are delayed before being transmitted to
a given hardware priority queue. A value between 0 and 255 can be
specified. This number is then multiplied by 16 ms to determine the
maximum latency. For example, if 3 is specified, the maximum
latency allowed will be 3 X 16 = 48 ms.
When the specified hardware priority queue has been waiting to
transmit packets for this amount of time, the current queue will finish
transmitting its current packet, and then allow the hardware priority
queue whose max_latency timer has expired to begin transmitting
packets.
Parameters
<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.
max_packet <value 0-255> − Specifies the maximum number of
packets the above specified hardware priority queue will be allowed
to transmit before allowing the next lowest priority queue to transmit
its packets. A value between 0 and 255 can be specified.
max_latency <value 0-255> − Specifies the maximum amount of time
the above specified hardware priority queue will be allowed to
transmit packets before allowing the next lowest hardware priority
queue to begin transmitting its packets. A value between 0 and 255
can be specified − with this value multiplied by 16 ms to arrive at the
total allowed time for the queue to transmit packets. For example, a
value of 3 specifies 3 X 16 = 48 ms. The queue will continue
transmitting the last packet until it is finished when the max_latency
timer expires.
Restrictions Only administrator-level users can issue this command.
Example usage:
To configure the traffic scheduling mechanism for each queue:
DES-3550:4# config scheduling 0 max_packet 100
max_latency 150
Command: config scheduling 0 max_packet 100
max_latency 150
Success.
DES-3550:4#
show scheduling
Purpose Used to display the currently configured traffic scheduling on the
switch.
Syntax
show scheduling
Description
The
show scheduling
command will display the current traffic
scheduling mechanisms in use on the switch.