AMX NXA-ENET24 Setting the Default Priority for Interfaces CLI, Egress Queue Priority Mapping

Class of Service Configuration

Setting the Default Priority for Interfaces - CLI

This example assigns a default priority of 5 to port 3.

FIG. 154 CLI - Port Priority Configuration

Mapping CoS Values to Egress Queues

This switch processes Class of Service (CoS) priority tagged traffic by using four priority queues for each port, with service schedules based on Weighted Round Robin (WRR). Up to 8 separate traffic priorities are defined in IEEE 802.1p. The default priority levels are assigned according to recommendations in the IEEE 802.1p standard as shown in the following table.

Egress Queue Priority Mapping

Queue	0	1	2	3
Priority	1,2	0,3	4,5	6,7

1,2	Q0
0,3	Q1
4,5	Q2
6,7	Q3

Serviced by weighted round robin

FIG. 155 Weighted Round Robin (WRR)

The priority levels recommended in the IEEE 802.1p standard for various network applications are shown in the following table. However, you can map the priority levels to the switch’s output queues in any way that benefits application traffic for your own network.

CoS Priority Levels

Priority Level	Traffic Type
1	Background
2	(Spare)
0 (default)	Best Effort
3	Excellent Effort
4	Controlled Load
5	Video, less than 100 milliseconds latency and jitter
6	Voice, less than 10 milliseconds latency and jitter
7	Network Control

138 NXA-ENET24 - Software Management Guide