Dell PowerConnect 3324 User Manual page 341

• Trust Mode—Determines which packet fields to use for classifying packets entering
the switch. When no rules are defined the traffic containing the predefined packet
field (CoS, DSCP or TCP/UDP port) 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—Indicates the output queue assignment is determined by the IEEE802.1p
VLAN priority tag (VPT) or by the default VPT assigned to a port.
– DSCP—Indicates the output queue assignment is determined by the DSCP field.
– TCP/UDP—Indicates the output queue is determined by the TCP/UDP port.
NOTE: The interface Trust setting overrides the global Trust setting.
Enabling Quality of Service:
Open the QoS Global Settings page.
1
Select Enable in the Quality of Service field.
2
Click Apply Changes. Quality of Service is enabled on the device.
3
Enabling Trust:
Open the QoS Global Settings page.
1
Select the Trust setting in the Trust Mode field.
2
Click Apply Changes. Trust is enabled/disabled on the device.
3
Enabling Trust Using the CLI Commands
The following table summarizes the equivalent CLI commands for configuring fields in the
QoS Global Settings page.
CLI Command
qos trust [cos | dscp | tcp-
udp-port]
qos
no qos trust
The following is an example of the CLI commands:
Console (config)# qos
Description
Configures the system to basic mode and
the trust state.
Enables QoS on the device.
Returns to the non-trust state.
C o n f i g u r i n g Q u a l i t y o f S e r vi c e
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