Reference Guide

trust
Specify dynamic classification (DSCP) or dot1p to trust.
S4820T
Syntax
trust {diffserv [fallback]| dot1p [fallback]}
Parameters
diffserv Enter the keyword diffserv to specify trust of DSCP
markings.
dot1p Enter the keyword dot1p to specify trust dot1p
configuration.
fallback Enter the keyword fallback to classify packets according
to their DSCP value as a secondary option in case no match
occurs against the configured class maps.
Defaults none
Command
Modes
CONFIGURATION (conf-policy-map-in)
Command
History
This guide is platform-specific. For command information about other platforms,
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version 9.0.2.0 Introduced on the S6000.
Version
8.3.19.0
Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 8.3.1.0 Added fallback to the E-Series.
Version 8.2.1.0 Added dot1p to the C-Series and S-Series.
Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
Version 7.4.1.0 Added dot1p and IPv6 DSCP.
pre-Version
6.1.1.1
Introduced on the E-Series
Usage
Information
When you configure trust, matched bytes/packets counters are not incremented
in the show qos statistics command.
Dynamic mapping honors packets marked according to the standard definitions of
DSCP. The following lists the default mapping.
1384
Quality of Service (QoS)