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Defaults
Command Modes
Command
History
Usage
Information
1222
|
Quality of Service (QoS)
fallback
Enter this keyword to
secondary option in case no match occurs against the configured class maps.
ipv6-diffserv
On E-Series only, enter the keyword
IPv6 DSCP.
No default behavior or values
CONFIGURATION (conf-policy-map-in)
fallback
Version 8.3.1.0
dot1p
Version 8.2.1.0
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
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 47-9. Standard Default DSCP Mapping Table
DSCP/CP
DSCP Definition
hex range
(XXX)
111XXX
110XXX
101XXX
EF (Expedited
Forwarding)
100XXX
AF4 (Assured
Forwarding)
011XXX
AF3
010XXX
AF2
001XXX
AF1
000XXX
BE (Best Effort)
classify packets according to their DSCP value as a
ipv6-diffserv
available on the E-Series.
available on the C-Series and S-Series.
Traditional IP Precedence E-Series
Internal Queue
ID
Network Control
Internetwork Control
CRITIC/ECP
Flash Override
Flash
Immediate
Priority
Best Effort
to specify trust configuration of
C-Series and
DSCP/CP
S-Series Internal
decimal
Queue ID
7
3
6
3
5
2
4
2
3
1
2
1
1
0
0
0
48–63
32–47
16–31
0–15
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