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1890 CHAPTER 125: FR QOS CONFIGURATION COMMANDS
<Sysname> system-view
[Sysname] fr del 1 protocol ip
fr pvc-pq
Syntax fr pvc-pq [ top-limit middle-limit normal-limit bottom-limit ]
undo fr pvc-pq
View Frame relay interface view, MFR interface view
Parameters top-limit: Length of top priority queue, ranging from 1 to 1024. The value is the
number of packets. By default, it is 20.
middle-limit: Length of middle priority queue, ranging from 1 to 1024. The value is
the number of packets. By default, it is 40.
normal-limit: Length of normal priority queue, ranging from 1 to 1024. The value
is the number of packets. By default, it is 60.
bottom-limit: Length of bottom priority queue, ranging from 1 to 1024. The value
is the number of packets. By default, it is 80.
Description Use the
fr pvc-pq command to set the queue type of a FR interface as PVC PQ
(PVC Priority Queuing) and set queue length, i.e. the maximum number of packets
that can be held by a queue, for each queue.
Use the
undo fr pvc-pq command to restore the queue type of the interface into
FIFO.
By default, the queuing type of a FR interface is FIFO.
After FRTS is enabled on an interface, the queuing type of the interface can only
be FIFO or PVC PQ.
PVC PQ is a new queuing mechanism of FRTS. Similar to PQ, it also has four queue
types: top, middle, normal and bottom, in descending order. Configure the queue
of PVC PQ that DLCI enters in FR class. When congestion occurs on an interface,
different DLCIs enter different PVC PQs. When sending data, according to queue
priority, data in higher priority queues will be sent before lower priority queues.
Related commands: pvc-pq.
Examples # Set the queuing type of the interface Serial 1/0/ as PVC PQ.
<Sysname> system-view
[Sysname] interface Serial 1/0
[Sysname-Serial1/0] fr pvc-pq