3Com MSR 30, MSR 50 manual Fr pvc-pq, Undo fr pvc-pq, Related commands pvc-pq

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-pqcommand 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-pqcommand 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