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Queuing Overview 301
Figure 10-5
Priority Queuing Process
Configuring Priority Queuing
As with any task, the configuration of priority queuing can be quite simple, or it can be a rather
lengthy process. In the most basic of configurations, each protocol that traverses a particular
WAN link is configured to enter a specific queue. In more advanced configurations, standard or
extended access lists can be defined for specific traffic types and applied to a queue
configuration.
In priority queuing, the priority-list commands are read in the order of their appearance until
a matching protocol or interface type is found. When a match is found, the packet is assigned
to the appropriate queue and the search ends. In addition, the additional lines that might exist
after the line in which the match was found are not processed.
HIGH
priority
MEDIUM
priority
NORMAL
priority
LOW
priority
No
No
No
No
Yes
Yes
Yes
Yes
Dispatch
packet