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Quality of Service (QoS): Managing Bandwidth More Effectively
Using QoS Classifiers To Configure Quality of Service for Outbound Traffic
configure an 802.1p priority of 7 for packets received with a DSCP of 000110,
and then enable diff-services:
Executing this command displays
the current ToS configuration
and shows that the selected
DSCP is not currently in use.
The 000110 codepoint is unused,
and thus available for directly
assigning an 802.1p priority
without changing the packet’s
DSCP.
Note: All codepoints without a
“DSCP Policy” entry are
available for direct 802.1p priority
assignment.
Figure 15-13. Example Showing Codepoints Available for Direct 802.1p Priority
Assignments
Notice that codepoints 000000 and 001001 are named as DSCP
policies by other codepoints (000001 and 000110 respectively). This
means they are not available for changing to a different 802.1p priority.
Outbound IP packets
with a DSCP of 000110
will have a priority of 7.
Figure 15-14. Example of a Type-of-Service Configuration Enabling Both Direct 802.1p Priority Assignment
and DSCP Policy Assignment
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