Reference Guide

1256 | Quality of Service (QoS)
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Command Modes
CONFIGURATION (conf-policy-map-in)
Command
History
Usage
Information
When trust is configured, matched bytes/packets counters are not incremented in the show
qos statistics
command.
The trust diffserv feature is not supported on E-Series ExaScale when an IPv6 microcode is
enabled.
Dynamic mapping honors packets marked according to the standard definitions of DSCP. The
default mapping table is detailed in the following table.
Table 42-9. Standard Default DSCP Mapping Table
wred
e
Designate the WRED profile to yellow or green traffic.
Syntax
wred {yellow | green} profile-name
Version 8.3.19.0 Introduced on S4820T
Version 8.3.7.0 Introduced on S4810
Version 8.3.1.0
fallback available on the E-Series.
Version 8.2.1.0
dot1p available on the C-Series and S-Series.
Version 7.6.1.0 Introduced on S-Series
Version 7.5.1.0 Introduced on C-Series
Version 7.4.1.0 Expanded to add support for dot1p and IPv6 DSCP
pre-Version
6.1.1.1
Introduced on E-Series
DSCP/CP
hex range
(XXX)
DSCP Definition Traditional IP
Precedence
E-Series
Internal
Queue ID
C-Series and
S-Series
Internal Queue
ID
DSCP/CP
decimal
111XXX Network Control 7 3
48–63
110XXX Internetwork Control 6 3
101XXX EF (Expedited
Forwarding)
CRITIC/ECP 5 2
32–47
100XXX AF4 (Assured
Forwarding)
Flash Override 4 2
011XXX AF3 Flash 3 1
16–31
010XXX AF2 Immediate 2 1
001XXX AF1 Priority 1 0
0–15
000XXX BE (Best Effort) Best Effort 0 0