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Creating an ATM Interface

Before you attempt to create an ATM interface on your system, create the physical line interface over which ATM traffic flows. See the following chapters:

To begin creating ATM, you must navigate to the module's line interface level to create an ATM interface for the module.

To create an ATM interface on a module:

  1. In the Instance Explorer, select the module for which you want to create an ATM interface.
  2. Right-click the line interface on which you want to configure ATM, select Create, and click ATM Interface.

The Create ATM Interface dialog box appears.
  1. Set the ATM interface's parameters (Table 52).
    2. 



     Table 52:  ATM Interface Parameters 
    

     Parameter
    		

     Description
    		

    

     Name
    
    		

     Identifies the interface; generated automatically
    
    		

    

     Alias
    
    		

     Description of the interface; 0-32 characters; default: blank
    
    		

    

     IfIndex
    
    		

     Identifies the interface on the particular line interface; generated automatically
    
    		

    

     UNI Version
    
    		

     User Network Interface. You can select the version on a per-port basis; available versions are auto-config, 3.0, 3.1, and 4.0.
    
    		

    

     Status
    		

     
    
    		

    

     Operational
    
    		

     Current operational status of the interface
    
    		

    

     Administrative
    
    		

     Desired status of the interface: Up/Down; default: Up
    
    		

    

     VCI/VPI Bits
    		

    

     VCs per VP
    
    		

     Total number of virtual circuits per virtual paths
    
    		

    

     Total VPs
    
    		

     Total number of virtual paths
    
    		

    

     Number of bits representing VCI
    
    		

     Sliding the toggle changes the number of bits. Toggle automatically changes the VCs per VP and Total VPs fields.
    
    		

    

     ILMI Settings
    		

    

     VPI
    
    		

     Virtual path identifier for ILMI. A number ranging from zero to one lower than the value selected in the VCI/VPI Bits group box. The recommended VPI value for the ILMI PVC is 0. It must match the value on the ATM switch.
    

     NOTE: The VPI and VCI values cannot both be set to 0.
    
    		

    

     VCI
    
    		

     Virtual circuit identifier for ILMI. A number ranging from zero to one lower than the value selected in the VCI/VPI Bits group box. The VCI value is unique on a single link, not throughout the ATM network. The recommended VCI value for the ILMI PVC is 16. 
    

     NOTE: The VCI and VPI values cannot both be set to 0.
    
    		

    

     Admin Status
    
    		

      
  
    •  Up—Interface is enabled by the administrator
      • 
  
    •  Down—Interface is disabled by the administrator
      • 

    
    		

    

     Poll Frequency (sec)
    
    		

     You can enable polling on a per-port basis. This is the interval in seconds between poll PDU transmissions if there are no pending sequence data PDUs.
    
    		

    

     Virtual Circuit Descriptor
    
    		

     Identifies a virtual circuit descriptor number
    

     NOTE: The VCD value has no relationship to the VPI and VCI values. It has meaning only to the E-series router.
    
    		

    

     OAM Settings
    		

     
    
    		

    

     Cell Admin State
    
    		

     When enabled, the E-series router ignores all operation, administration, and maintenance (OAM) cells received on the interface; default: enabled
    
    		

    

     Loopback Location ID
    
    		

     Identifier that allows other network entities to specifically send OAM loopback cells to the interface; range 0x0-0xffffffff; default: 0xffffffff
    
    		

    

     CAC Settings
    		

    

     Admin State
    
    		

     Admin status of CAC on the ATM interface
    
    		

    

     
    
    		

     NOTE: Selecting Enabled activates the Subscription Bandwidth and UBR Weight fields. You can enter a value in these fields or click OK/Save to have the software enter the default settings retrieved from the line module.
    

     You can edit these fields later by selecting the ATM interface, right-clicking, and selecting Configure.
    
    		

    

     Subscription Bandwidth (kbps)
    
    		

      
  
    •  The subscribed bandwidth of the ATM interface; range 0-2147483647
      • 
  
    •  Leaving the field empty (0) makes the device calculate the available bandwidth for ATM UBR and UBRPCR circuits using the effective bandwidth defined by the hardware:
      • 

    
  
      
    
    •  OC3—149760
      • 
    
    •  T3—40704
      • 
    
    •  OC12—599040
      • 
  
    
    		

    

     UBR Weight (kbps)
    
    		

      
  
    •  The bandwidth associated with every UBR connection (that is not part of a VP tunnel) and UBR with PCR connection configured on the ATM interface. The weight will not apply to those UBR circuits that are part of a VP tunnel; range 0-2147483647
      • 
  
    •  Leaving the field empty (0) makes the device calculate the available bandwidth for ATM ubr and ubrPcr Circuits using the effective bandwidth defined by the hardware:
      • 

    
  
      
    
    •  OC3—149760
      • 
    
    •  T3—40704
      • 
    
    •  OC12—599040
      • 
  
    
    		

    

     Port Available Bandwidth (kbps)
    
    		

     Available bandwidth of the ATM interface as calculated by the device; cannot edit
    
    		

    

     Map Group
    		

     
    
    		

    

     Map List Name
    
    		

     Associates a map list with the current ATM interface on OCx/STMx modules only; range 32 alphanumeric characters 
    

     See Creating an NBMA Interface.
  2. Click OK.

    NOTE: If there is an applicable template, you can use that template to configure the non-unique parameters for ATM. The non-unique parameters in a template are displayed in blue. See Chapter 9, Using Templates.

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