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Configuring QoS on the Switch
Configure the marked-down DSCP values that map to the CoS values that are consistent with the
Note
markdown penalty (see the
page
To revert to the default DSCP markdown value mapping, perform this task in privileged mode:
Task
Step 1
Revert to the DSCP markdown map defaults.
Step 2
Verify the configuration.
This example shows how to revert to the DSCP markdown map defaults:
Console> (enable) clear qos policed-dscp-map
QoS dscp-cos-map setting restored to default.
Console> (enable)
Note
Without the normal-rate or the excess-rate keywords, the clear qos policed-dscp-map command clears
only the normal policed-dscp map.
Displaying QoS Information
To display the QoS information, perform this task:
Task
Display the QoS information.
This example shows how to display the QoS runtime information for port 2/1:
Console> show qos info config 2/1
QoS setting in NVRAM:
QoS is enabled
Port 2/1 has 2 transmit queue with 2 drop thresholds (2q2t).
Port 2/1 has 1 receive queue with 4 drop thresholds (1q4t).
Interface type:vlan-based
ACL attached:
The qos trust type is set to untrusted.
Default CoS = 0
Queue and Threshold Mapping:
Queue Threshold CoS
----- --------- ---------------
1
1
2
2
Rx drop thresholds:
Rx drop thresholds are disabled for untrusted ports.
Queue #
Catalyst 6500 Series Switch Software Configuration Guide—Release 8.7
52-76
"Mapping the Internal DSCP Values to the Egress CoS Values" section on
52-74).
1
0 1
2
2 3
1
4 5
2
6 7
Thresholds - percentage (abs values )
Command
clear qos policed-dscp-map
[normal-rate | excess-rate]
show qos maps {config | runtime}
[cos-dscp-map | ipprec-dscp-map |
dscp-cos-map | policed-dscp-map]
Command
show qos info [runtime | config]
Chapter 52
Configuring QoS
OL-8978-04
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Troubleshooting
