3com MSR 20-20 참조 매뉴얼

Frame relay class view

Use the rtpq command to configure to apply Realtime Transport Protocol (RTP) 
Priority Queuing.

Use the undo rtpq command to remove the application.

The application of a FR class configured with RTPQ to a PVC results in the creation 
of a strict priority queue on the PVC. Packets in the port range specified by RTPQ 
of the destination UDP port will enter RTPQ. When congestion occurs in the virtual 
circuit, the packets in the queue will be absolutely sent with preference without 
exceeding the configured bandwidth. When congestion does not occur in the 
virtual circuit, the RTP packets in the specified port range can occupy the available 
bandwidth on the virtual circuit. Generally, the UDP port range used by VoIP can 
be configured as from 16384 to 32767.

# Configure RTP priority queue on the FR class named test1 with a bandwidth of 
20 kbps.

<Sysname> system-view

[Sysname] fr class test1

[Sysname-fr-class-test1] rtpq start-port 16383 end-port 16384 bandwidth 20 

traffic-shaping adaptation { becn percentage | interface-congestion number }

undo traffic-shaping adaptation { becn | interface-congestion }

Frame relay class view

becn: Adjusts the packets with the BECN flag.

percentage: Adjustment percentage, ranging from 1 to 30 percent. The default 
value is 25 percent.

interface-congestion: Traffic shaping according to the number of the packets in 
the outbound queue.

number: Number of packets in the queue, ranging from 1 to 40.

Use the traffic-shaping adaptation command to enable the adaptive traffic 
shaping function of FR.

Use the undo traffic-shaping adaptation command to disable this function.

By default, traffic-shaping adaptation is enabled, and the ratio of each adaptation 
is set to 25.

fr traffic-shaping, cir allow, and cir.