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Template:Networking tswos manual qos (view source)
Revision as of 15:02, 12 October 2023
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==802.1p priority==
==802.1p priority==
802.1p is a quality of service (QoS)/class of service (CoS) method that operates at the MAC layer (Layer 2). Equipment that supports 802.1p can add and recognize a value that indicates the priority level of the Ethernet frame. 802.1p—Displays the 802.1p priority tag values to be assigned to an egress queue, where 0 is the lowest and 7 is the highest priority.
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<table class="nd-mantable">
<tr>
<th>Field</th>
<th>Value</th>
<th>Description</th>
</tr>
<tr>
<td>Scheduling mode</td>
<td>SP | WRR | WFQ; default: <b>WRR</b></td>
<td>Possible modes:
<ul>
<li>Strict Priority (SP): This method imparts the highest service to high priority traffic. Here, the queuing mechanism forwards as many frames as possible in a higher priority frame before moving to the queue with the next priority level.</li>
<li>Weighted Round Robin (WRR): In this method, frames or packets of all the queues in the scheduler are serviced in each cycle. Priority among the different queues is maintained by forwarding a specific number of frames in each queue per cycle in a rotational manner.</li>
<li>Combination of WRR and SP (WFQ): This queuing method is configurable in nature and it combines both WRR and SP. In this method, strict priority is given to time-sensitive or real-time traffic like voice and video, while WRR is adopted for other traffics.</li>
</ul>
</td>
</tr>
<tr>
<td>Scheduling weights</td>
<td>Integer [1..127]</td>
<td>Weight value assignment of specific port queue for WFQ/WRR </td>
</tr>
<tr>
<td>802.1P Priority</td>
<td>Integer [0..7]</td>
<td>Internal priority mapping to egress queue ID. By default TC (Traffic Class) queue values are mapped 1 to 1 with CoS values. The higher the CoS marking, the higher will be the packet priority.</td>
</tr>
</table>
==Bandwidth control==
==Bandwidth control==
