Reference Guide

13 1 L2ACL 400 200 Alwd(2)
Dell#
trust
Specify dynamic classification (DSCP) or dot1p to trust.
S5000
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
Version 9.0(1.3) Introduced on the S5000.
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 default mapping table is shown below:
Table 11. Default Mapping for DSCP Trust
DSCP/CP hex
Range (XXX)
DSCP
Definition
Traditional IP
Precedence
Internal
Queue ID
DSCP/CP
Decimal
111XXX Network
Control
3 48–63
110XXX Internetwork
Control
3 48–63
101XXX EF (Expedited
Forwarding)
CRITIC/ECP 2 32–47
100XXX AF4 (Assured
Forwarding)
Flash Override 2 32–47
011XXX AF3 Flash 1 16–31
Quality of Service (QoS)
1135