Dell PowerConnect 5548 User Guide - Page 661

2 Enter the fields: - Trust Mode - Enable/disable Trust mode. • CoS - Traffic is mapped to queues, based on the VPT field in the VLAN tag, or based on the per-port default CoS value (if there is no VLAN tag on the incoming packet). The mapping of the VPT to queue can be configured in the CoS to Queue page. • DSCP - All IP traffic is mapped to queues, based on the DSCP field in the IP header. The mapping of the DSCP to queue is configured in the DSCP to Queue page. - Always Rewrite DSCP - Check to always rewrite the DSCP values in the incoming packets with the new values set in the DSCP to Queue page. When this field is enabled, the switch uses the new DSCP values to select the egress queue. Assigning Global Settings Using CLI Commands The following table summarizes the CLI commands for configuring fields in the Global Settings page. Table 22-8. Global Settings CLI Commands CLI Command qos trust {cos|dscp} no qos trust qos dscp-mutation no qos dscp-mutation Description Configures the system to either the CoS or DSCP trust state. Use the no form of this command to return to the default configuration. Applies the DSCP Mutation map to system DSCP trusted ports. Use the no form of this command to restore the trusted port with no DSCP mutation. The following is an example of the CLI commands: console(config)# qos trust dscp console(config)# qos dscp-mutation Dell PowerConnect 55xx Systems User Guide 661