Quality of Service (QoS): Managing Bandwidth More Effectively

Using QoS Classifiers To Configure QoS for Outbound Traffic

no qos type-of-service

Disables all ToS classifier operation. Current ToS DSCP policies and priorities remain in the configuration and will become available if you re-enable ToS diff-services.

no qos type-of-service [diff-services < codepoint >]

Deletes the DSCP policy assigned to the

<codepoint > and returns the < codepoint > to the 802.1p priority setting it had before the DSCP policy was assigned. (This will be either a value from 0 - 7 or No-override.)

show qos type-of-service

Displays a listing of codepoints, with any corresponding DSCP policy re-assignments for outbound packets. Also lists the (802.1p) priority for each codepoint that does not have a DSCP policy assigned to it.

For example, suppose you want to configure the following two DSCP policies for packets received with the indicated DSCPs.

Received

Policy

802.1p

Policy Name

DSCP

DSCP

Priority

(Optional)

 

 

 

 

001100

000010

6

Level 6

001101

000101

4

Level 4

 

 

 

 

1.Determine whether the DSCPs already have priority assignments, which could indicate use by existing applications. This is not a problem as long as the configured priorities are acceptable for all applications using the same DSCP. (Refer to the “Note On Changing a Priority Setting” on page 6-61.Also, a DSCP must have a priority configured before you can assign any QoS classifiers to use it.)

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