Hirschmann GREYHOUND GRS1020, Справочное руководство

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Switching
[ Switching > QoS/Priority > Queue Management ]
189
RM GUI GRS
Release 8.0 09/2019
5.7.5 Queue Management
[ Switching > QoS/Priority > Queue Management ]
This dialog lets you enable and disable the
Strict priority
function for the traffic classes. When you
disable the
Strict priority
function, the device processes the priority queues of the ports with
"Weighted Fair Queuing".
Table
Traffic class
Displays the traffic class.
Strict priority
Activates/deactivates the processing of the port priority queue with
Strict priority
for this traffic class.
Possible values:

marked (default setting)
The processing of the port priority queue with Strict priority is active.
– The port forwards only data packets that are in the priority queue with the highest priority.
When this priority queue is empty, the port forwards data packets that are in the priority
queue with the next lower priority.
– The port forwards data packets with a lower traffic class after the priority queues with a higher
priority are empty. In unfavorable situations, the port does not send these data packets.
– When you select this setting for a traffic class, the device also enables the function for traffic
classes with a higher priority.
– Use this setting for applications such as VoIP or video that require the least possible delay.

unmarked
The processing of the port priority queue with
Strict priority
is inactive. The device uses "Weighted
Fair Queuing"/"Weighted Round Robin" (WRR) to process the port priority queue.
– The device assigns a minimum bandwidth to each traffic class.
– Even under a high network load the port transmits data packets with a low traffic class.
– When you select this setting for a traffic class, the device also disables the function for traffic
classes with a lower priority.
Min. bandwidth [%]
Specifies the minimum bandwidth for this traffic class when the device is processing the priority
queues of the ports with "Weighted Fair Queuing".
Possible values:

0..100 (default setting: 0 = the device does not reserve any bandwidth for this traffic class)
The value specified in percent refers to the available bandwidth on the port. When you disable the
Strict priority
function for every traffic class, the maximum bandwidth is available on the port for the
"Weighted Fair Queuing".
The maximum total of the assigned bandwidths is 100 %.