Priority Queueing

In priority queueing, packets are assigned to one of the 4 availables queues according to protocol type, acl or entering interface. The differents queues are served in a strict priority fashion, that is when a packet has to been sent, queue 1 is always served before until limit or emptied. It could lead to bandwidth starvation (onlys queue 1 is served)

Configuration

Assign the Priority-list to an interface
interface fa1/0
priority-group list-num

Assign packet to a queue
priority-list list-num protocol protocol high|medium|normal|low list|tcp|udp list-or-proto-num
OR
priority-list list-num interface int-typ int-num high|medium|normal|low

Configure queue length
priority-list list-num limit high-limit medium-limit normal-limit low-limit