Defining CoS Global Parameters

This section contains the following topics:

Defining CoS Settings

Defining QoS Interface Settings

Defining Queue Settings

Mapping CoS Values to Queues

Mapping DSCP Values to Queues

Defining CoS Settings

Defining CoS Settings

Class of Service (CoS) global parameters are set from the CoS Settings page.

To open the CoS Settings page, click Quality of ServiceCoS Global Parameters CoS Settings in the tree view.

Figure 9-1. CoS Settings

Cos Mode — Enables or disables managing network traffic using Quality of Service.

Trust Mode — Determines which packet fields to use for classifying packets entering the device. When no rules are defined, the traffic containing the predefined packet field (CoS or DSCP) is mapped according to the relevant trust modes table. Traffic not containing a predefined packet field is mapped to best effort. The possible Trust mode field values are:

CoS (802.1P) — The output queue assignment is determined by the IEEE802.1p VLAN priority tag (VPT) or by the default VPT assigned to a port.

DSCP — The output queue assignment is determined by the DSCP field.

Enabling Quality of Service:

146Dell PowerConnect 28xx Systems User Guide

Page 146
Image 146
Dell 28XX manual Defining CoS Global Parameters, Defining CoS Settings, Enabling Quality of Service