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Configuring the Cajun A500 Network

Cajun A500 ATM Switch User Guide

 3-7

Configuring Permanent Virtual Channels and Paths

Permanent Virtual Circuits (PVCs) are circuits that are manually configured and remain 

in place until they are manually removed by the network administrator. PVCs are 

typically used when the directly attached system does not support signaling. There are 

two basic kinds of PVCs: 

U Point-to-point - These bi-directional PVCs are configured when there are only 

two endstations communicating.

U Point-to-multipoint - These uni-directional PVCs are configured when there is 

one source endstation and multiple receiving endstations.

Adding Virtual Channels or Paths

To add a virtual channel:

1. In the ATM Switch 500 section of the Web Agent window, select Virtual 

Circuits. 

2. Select VC Table. The Virtual Circuits Table For All ATM Ports window opens. Scroll 

to the bottom of the window. 

3. Click on Add Virtual Channel. The Add Virtual Channel window opens.

4. Click on Add Virtual Path. The Add Virtual Path window opens.

5. Fill in the appropriate information.

6. Click Apply to save your changes, or Cancel to restore previous settings.

To add a virtual channel using the CLI:

1. In the ATM Switch A500 section of the Web Agent window, select CLI. A shell 

window opens.

2. Execute the 

modify add_channel point-point command. 

For more information 

on this command, see Chapter 8, "modify Commands".

To configure a point-to-multipoint PVC using the CLI:

1. In the ATM Switch A500 section of the Web Agent window, select CLI. A shell 

window opens.

2. Execute the 

modify add_channel multipoint 

command. For more information 

on this commands, see Chapter 8, "modify Commands".

Note:  The initial connection is added to the switch table, while the second 

connection was bifurcated in the switch table.