Cisco WS-C6506 Software Manual page 1333

Chapter 53 Using Automatic QoS
Overview
You must configure both egress and ingress QoS for QoS to function properly. Because any traffic type
can egress on any given port, the egress QoS settings must have global QoS settings. The settings take
into account all the possible traffic types that are listed in the
and Video Networks" section on page
switch. The global QoS settings cover the ingress scheduling settings, because the granularity
CoS-to-queue mapping is port-type specific and not port specific. The port-specific QoS settings, such
as QoS ACLs, port trust, and default CoS, are not altered.
Global Automatic QoS Detail Settings
Table 53-2
global automatic QoS command.
The 1p1q8t default WRED settings are not changed from the current QoS defaults; only the
Note
CoS-to-threshold map is changed.
Table 53-2
QoS Parameter
CoS-to-DSCP map
IP-precedence-to-DSCP map
DSCP-to-CoS map
Policed-DSCP map
Policed-DSCP map excess rate
Default QoS IP ACL
Table 53-3
Field
1p1q0t rxq-ratio
1p3q1t wrr
2q2t txq-ratio
2q2t wrr
OL-8978-04
through Table 53-6 list the values of all the QoS parameters that are configured through the
Switch-Wide Settings (Global QoS Settings)
Scheduling Specific Settings (Global QoS Settings)
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
Using the Automatic QoS Macro on the Switch
"Typical CoS and DSCP Values for Voice
53-2. The egress QoS settings are applied to all the ports in the
Setting
0 10 18 26 34 46 48 56 (bold indicates nondefault values)
0 10 18 26 34 46 48 56 (bold indicates nondefault values)
{0-7}, {8-15}, {16-23}, {24-31}, {32-39}, {40-47}, {48-55},
{56-63} (as per default)
As per default with 46:0 and 26:0 (see the
QoS Macro" section on page
As per default (see the
section on page 53-6)
ip dscp 0 (as per default)
Value
80% : 20% (q1 : p1)
20 100 200 (q1 q2 q3)
80% : 20% (q1 : q2)
100 255 (q1 q2)
"Global Automatic
53-6)
"Global Automatic QoS Macro"
53-7