User Guide
Table Of Contents
- Chapter 1 – Getting Started
- Chapter 2 – System Status
- Chapter 3 – Quick Start
- Chapter 4 – System Management
- Chapter 5 – Port Management
- Chapter 6 – VLAN Management
- Chapter 7 - Spanning Tree Management
- Chapter 8 - MAC Address Management
- Chapter 9 – Multicast
- Chapter 10 - IP Interface
- Chapter 11 - IP Network Operations
- Chapter 12 – Security
- Chapter 13 - Access Control List
- Chapter 14 - Quality of Service
- Chapter 15 - Maintenance
- Chapter - 16 Support
185
To map CoS /802.1p values to egress queues:
1.
Click
Configure> Quality of Service > CoS/802.1p to Queue
.
2.
Enter the parameters.
•
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.
•
Output Queue—Select the egress queue to which the 802.1p priority is mapped.
Either four or eight egress queues are supported, where Queue 4 is the highest
priority egress queue and Queue 1 is the lowest priority.
3.
For each 802.1p priority, select the Output Queue to which it is mapped.
4.
Click Apply. 801.1p priority values to queues are mapped, and the Running Configuration
file is updated.
DSCP to Queue
The DSCP (IP Differentiated Services Code Point) to Queue page maps DSCP values to egress
queues. The DSCP to Queue Table determines the egress queues of the incoming IP packets
based on their DSCP values. The original VPT (VLAN Priority Tag) of the packet is unchanged.
By simply changing the DSCP to Queue mapping and the Queue schedule method and bandwidth
allocation, it is possible to achieve the desired quality of services in a network.
The DSCP to Queue mapping is applicable to IP packets if the device is in QoS Basic mode and
DSCP is the trusted mode. Non-IP packets are always classified to the best-effort queue.
The following tables describe the default DSCP to queue mapping:
DSCP 63 55 47 39 31 23 15 7
Queue 3 3 4 3 3 2 1 1
DSCP 62 54 46 (EF) 38 (AF3) 30 (AF33) 22(AF23) 14 6
Queue
3 3 4 3 3 2 1 1