Chapter21 Quality of Service
Edit QoS Policy
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Cisco Router and Security Device Manager Version 2.2 User’s Guide
OL-4015-08
Add
Click this button to add an NBAR-recognized protocol that has not be ma tched
under any of the existing classes.
Delete
Select the protocols from the list and click Delete button to delete protocols from
the traffic class.
Note The Add and Delete buttons are disabled for real-time traffic classes except for
the SDM-generated SDMQoS-StreamVideo class.
Queuing Type
Class Based Weighted Fair Queuing (CBWFQ) defines two types of Low Latency
Queuing methods—bandwidth and priority. Bandwidth queuing promises a
minimum amount of bandwidth, and Priority ensures a fixed amount of bandwidth
for whatever bandwidth value is configured for the QoS class.
•Priority—If you select Priority, enter the fixed percentage of bandwidth that
you want to give to the QoS class. You can give from 1 to 75 percent of
bandwidth.
•Bandwidth—If you select Bandwidth, the QoS class receives a minimum
percentage of the remaining bandwidth. Enter that percentage in the
Remaining Percent field.
DSCP Marking
This area allows you to select the type of DSCP marking for the real-time traffic.
Note This field will not appear if you checked the Trust (rely on) DSCP-markings of
the packets for traffic classification option under the Interface Selection
window.