Avaya a500 사용자 가이드

modify Commands

8-2

Cajun A500 ATM Switch User Guide

The 

modify add_channel multipoint

 command creates a point-to-multipoint virtual 

channel between two ATM ports on an Cajun A500. You must create a circuit to 

statically wire any connections in the switch module of the Cajun A500.  Use the 

modify 

add_channel multipoint

 command when setting up the initial connection or adding a 

leaf to an existing circuit. All point-to-multipoint connections require a priority of four. 

modify add_channel multipoint <input_port> <input_vpi> <input_vci> 

<output_port> <output_vpi> <output_vci> {class} {incellrate | ppd}

This command requires the following argument(s):

Note:  Partial Packet Discard can only be used for connections using AAL5.

input_port

Specify the port number where the VCI enters. Valid values are A1.1 through 

A4.8 and “self” for a connection that terminates in the Cajun A500.

input_vpi

Specify the incoming Virtual Path Identifier (VPI) number. Valid range is 0 - 255.

input_vci

Specify the incoming Virtual Channel Identifier (VCI) number. The valid range is 

32 - 2015.

output_port

Specify the port number where the VCI exits. Valid values are A1.1 - A4.8.

output_vpi

Specify the outgoing VPI number. The valid range is 0 - 255.

output_vci

Specify the outgoing VCI number. Valid range is 32 - 2015.

class

Specify the Quality of Service (QoS) class. Valid values are: CBR, VBR, or UBR.

incellrate | ppd

The incellrate and ppd are based on the service class you select. 

• For CBR, specify the peak cell rate in the direction from the input port to the 

output port. 

• For VBR, specify the peak cell rate, sustained cell rate, and maximum burst 

size in the direction from the input port to the output port. 

• For UBR, specify whether you want Partial Packet Discard (PPD) turned on or 

off for the connection.