Priority Queuing

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Priority Queuing has four queues: High, Medium, Normal and Low.

High Queue must be empties before the router serves Medium Queue, then Medium Queue must be emptied before serve Normal Queue, and so on.

Configuration:

Priority-list

Then in interface config mode:

Priority-group

Verify:
Show queueing

References:
http://www.cisco.com/en/US/docs/ios/12_1/qos/configuration/guide/qcdconmg.html#wp1001400
http://www.cisco.com/en/US/docs/ios/12_1/qos/configuration/guide/qcdpq.html

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