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452 Configuring Quality of Service
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Setting a Tail Drop Threshold
1
Open the
QoS Tail Drop
page.
2
Select a threshold for each queue.
3
Click
Apply Changes
.
The tail drop threshold is configured, and the device is updated.
Setting Tail Drop Parameters for an Interface:
1
Open the
QoS Tail Drop
page.
2
Click
Show All
to display the
Tail Drop Table
page.
3
Select a status for each interface.
4
Click
Apply Changes
.
5
The tail drop status is defined for the interfaces.
Defining QoS Tail Drop Settings Using the CLI Commands
The following is an example of the CLI commands to define tail drop settings:
console(config)#qos wrr-queue threshold 8 80
Defining QoS Class Maps
One IP ACL and/or one MAC ACL comprise a class map. Class maps are configured to match
packet criteria, and are matched to packets on a first-fit basis. For example, Class Map A is assigned
packets based only on an IP-based ACL or a MAC-based ACL. Class Map B is assigned to packets
based on both an IP-based and a MAC-based ACL.
Use the
QoS Class Map
page to enable assigning and editing class maps. To open the
page, click
Quality of Service
→
Advanced QoS Mode
→
Class Map
in the tree view.
Table 10-12. Tail Drop Settings CLI Commands
CLI Command Description
qos wrr-queue threshold
queue-id threshold-
percentage
Assigns tail-drop thresholds.