Contents

Configuring Frame Relay-ATM Interworking

The Frame Relay-ATM Interworking features enable Frame Relay and ATM networks to exchange data, despite differing network protocols. There are two types of Frame Relay-ATM Interworking:

For further general information about Frame Relay-ATM Interworking, see the " Wide-Area Networking Overview " chapter at the beginning of this book.

For a description of the commands used to configure Frame Relay-ATM Interworking, refer to the chapter "Frame Relay-ATM Interworking Commands " in the Cisco IOS Wide-Area Networking Command Reference. To locate documentation of other commands that appear in this chapter, use the command reference master index or search online.

To identify the hardware platform or software image information associated with a feature, use the Feature Navigator on Cisco.com to search for information about the feature or refer to the software release notes for a specific release. For more information, see the section "Identifying Supported Platforms" in the chapter "Using Cisco IOS Software."

For Cisco IOS Release 12.2, Frame Relay-ATM Interworking is supported on the following platforms and interface types:

  • Cisco MC3810: T1/E1 ATM interface

  • Cisco 3600 series routers: OC-3 and inverse multiplexing over ATM (IMA) network modules

  • Cisco 2600 series routers: OC-3 and IMA network modules

  • Cisco 7200 series routers: all Cisco 7200 series ATM interface types

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/​go/​cfn. An account on Cisco.com is not required.

Prerequisites

If the end station is a Cisco router that is connected to an FRF.8 router or switch in translation mode, you must configure the end station with IETF encapsulation (not Cisco encapsulation, which is the default). To do so, you use the encapsulation frame relay ietf command.

IETF encapsulation on the end station is not required for FRF.8 in transparent mode (or for FRF.5 in translation mode or transparent mode). The FRF.5 or FRF.8 router or switch itself does not need IETF encapsulation in translation mode or transparent mode.

Information About Frame Relay-ATM Interworking

FRF.5 Frame Relay-ATM Network Interworking

FRF.5 provides network interworking functionality that allows Frame Relay end users to communicate over an intermediate ATM network that supports FRF.5. Multiprotocol encapsulation and other higher-layer procedures are transported transparently, just as they would be over leased lines. The figure below illustrates this concept.

Figure 1. Frame Relay-to-ATM Network Interworking (FRF.5)

FRF.5 describes network interworking requirements between Frame Relay Bearer Services and Broadband ISDN (BISDN) permanent virtual circuit (PVC) services.

The FRF.5 standard is defined by the Frame Relay Forum Document Number FRF.5: Frame Relay/ATM PVC Network Interworking Implementation Agreement. For more information about which sections of this implementation agreement are supported by Cisco IOS software, see the appendix " Frame Relay-ATM Interworking Supported Standards " in this book.


Note

On Cisco 7200 series routers, Frame Relay-ATM interworking does not support congestion management bit mapping.

FRF.8 Frame Relay-ATM Service Interworking

FRF.8 provides service interworking functionality that allows a Frame Relay end user to communicate with an ATM end user. Traffic is translated by a protocol converter that provides communication between dissimilar Frame Relay and ATM equipment. The figure below illustrates this concept.

Figure 2. Frame Relay-to-ATM Service Interworking (FRF.8)

FRF.8 describes a one-to-one mapping between a Frame Relay and an ATM PVC.

The FRF.8 standard is defined by the Frame Relay Forum Document Number FRF.8: Frame Relay/ATM PVC Network Service Interworking Implementation Agreement. For more information about which sections of this implementation agreement are supported, see the appendix " Frame Relay-ATM Interworking Supported Standards " in this book.


Note

On Cisco 7200 series routers, Frame Relay-ATM interworking does not support congestion management bit mapping.

How to Configure Frame Relay-ATM Interworking

Configuring and Verifying FRF.5

Configuring an FRF.5 One-to-One Network Interworking Connection

To configure FRF.5 encapsulation for a one-to-one connection between two Frame Relay end users over an intermediate ATM network, use the following commands beginning in global configuration mode:

SUMMARY STEPS

    1.    Router(config)# interface serial number

    2.    Router(config-if)# frame-relay interface-dlci dlci switched

    3.    Router(config)# interface atm number

    4.    Router(config-if)# pvc [PVC-name] vpi / vci

    5.    Router(config-if-atm-vc)# encapsulation aal5mux frame-relay

    6.    Router(config)# connect connection-name FR-interface FR-DLCI ATM-interface ATM-PVC network-interworking

    7.    Do one of the following:

    • Router(config-frf5)# clp-bit {0 | 1 | map-de}
    • Router(config-frf5)# de-bit map-clp

    8.    Router( config-frf5 )# end


DETAILED STEPS
     Command or ActionPurpose
    Step 1 Router(config)# interface serial number 

    Configures the Frame Relay interface and enters interface configuration mode.

     
    Step 2 Router(config-if)# frame-relay interface-dlci dlci switched 

    Configures a switched Frame Relay DLCI.

     
    Step 3 Router(config)# interface atm number 

    Configures the ATM interface and enters interface configuration mode.

     
    Step 4 Router(config-if)# pvc [PVC-name] vpi / vci 

    Creates the ATM PVC and virtual path identifier/virtual channel identifier (VPI/VCI). The VCI is a 16-bit field in the header of the ATM cell.

     
    Step 5 Router(config-if-atm-vc)# encapsulation aal5mux frame-relay 

    Configures the ATM adaption layer (AAL) and encapsulation type for the ATM PVC.

     
    Step 6 Router(config)# connect connection-name FR-interface FR-DLCI ATM-interface ATM-PVC network-interworking 

    Creates a connection to connect the Frame Relay DLCI to the ATM PVC and configures FRF.5 encapsulation.

     
    Step 7Do one of the following:
    • Router(config-frf5)# clp-bit {0 | 1 | map-de}
    • Router(config-frf5)# de-bit map-clp
     

    (On Cisco MC3810, 2600 series, and 3600 series routers only) Sets the ATM cell loss priority (CLP) field in the ATM cell header.

    (On Cisco MC3810, 2600 series, and 3600 series routers only) Sets discard eligible (DE) bit mapping from ATM to Frame Relay.

     
    Step 8 Router( config-frf5 )# end 

    Ends configuration mode and enters EXEC mode.

    Use the exit command to exit a submode and reenter global configuration command mode.

     
    What to Do Next

    To disconnect the FRF.5 interworking connection, use the shutdown connect subcommand.

    Configuring an FRF.5 Many-to-One Network Interworking Connection

    To configure FRF.5 encapsulation for a many-to-one connection between two Frame Relay end users over an intermediate ATM network, use the following commands beginning in global configuration command mode:

    SUMMARY STEPS

      1.    Router(config)# interface serial number

      2.    Router(config-if)# frame-relay interface-dlci dlci switched

      3.    Router(config)# vc-group group-name

      4.    Router(config-vc-group)# FR-interface-name FR-DLCI[FR-SSCS-DLCI]

      5.    Router(config)# interface atm number

      6.    Router(config-if)# pvc [PVC-name] vpi / vci

      7.    Router(config-if-atm-vc)# encapsulation aal5mux frame-relay

      8.    Router(config)# connect connection-name vc-group group-name ATM-interface ATM-vpi/vci

      9.    Do one of the following:

      • Router(config-frf5)# clp-bit {0 | 1 | map-de}

      10.    Router( config-frf5 )# end


    DETAILED STEPS
       Command or ActionPurpose
      Step 1 Router(config)# interface serial number 

      Configures the Frame Relay interface and enters interface configuration mode.

       
      Step 2 Router(config-if)# frame-relay interface-dlci dlci switched 

      Configures a switched Frame Relay DLCI.

       
      Step 3 Router(config)# vc-group group-name 

      Assigns multiple Frame Relay DLCIs to a VC group.

       
      Step 4 Router(config-vc-group)# FR-interface-name FR-DLCI[FR-SSCS-DLCI] 

      Specifies the Frame Relay DLCIs in the VC group and maps them to the Frame Relay-SSCS DLCIs. If the optional Frame Relay-SSCS DLCI value is not specified, its value will default to 1022.

       
      Step 5 Router(config)# interface atm number 

      Configures the ATM interface and enters interface configuration mode.

       
      Step 6 Router(config-if)# pvc [PVC-name] vpi / vci 

      Creates the ATM PVC and VPI/VCI. The VCI is a 16-bit field in the header of the ATM cell.

       
      Step 7 Router(config-if-atm-vc)# encapsulation aal5mux frame-relay 

      Configures the AAL and encapsulation type for the ATM PVC.

       
      Step 8 Router(config)# connect connection-name vc-group group-name ATM-interface ATM-vpi/vci 

      Creates a connection to connect the VC group to the ATM PVC.

       
      Step 9Do one of the following:
      • Router(config-frf5)# clp-bit {0 | 1 | map-de}


      Example:
      Router(config-frf5)# de-bit map-clp
       

      (On Cisco MC3810, 2600 series, and 3600 series routers only) Sets the ATM CLP field in the ATM cell header.

      (On Cisco MC3810, 2600 series, and 3600 series routers only) Sets DE bit mapping from ATM to Frame Relay.

       
      Step 10 Router( config-frf5 )# end 

      Ends configuration mode and enters EXEC mode.

      Use the exit command to exit a submode and reenter global configuration command mode.

       
      What to Do Next

      To disconnect the FRF.5 interworking connection, use the shutdown connect subcommand.

      Verifying FRF.5 Configuration

      To verify correct configuration of the Frame Relay-to-ATM Network Interworking (FRF.5) feature, perform the following tasks:

      SUMMARY STEPS

        1.    Enter the show connect id EXEC command to view information, including interworking parameters set, for the specified connection identifier:

        2.    Enter the show connect port EXEC command to view information about the connection on a specific interface:

        3.    Enter the show frame-relay pvcEXEC command to view statistics about Frame Relay interfaces:

        4.    Enter the show atm pvcEXEC command to view ATM PVCs and statistics:


      DETAILED STEPS
        Step 1   Enter the show connect id EXEC command to view information, including interworking parameters set, for the specified connection identifier:

        Example:
        Router# show connect id 5
FR/ATM Network Interworking Connection: network-1
  Status    - UP
  Segment 1 - VC-Group network-1
  Segment 2 - ATM3/0 VPI 1 VCI 34
  Interworking Parameters -
    de-bit map-clp
    clp-bit map-de
        Step 2   Enter the show connect port EXEC command to view information about the connection on a specific interface:

        Example:
        Router# show connect port atm3/0
ID   Name               Segment 1            Segment 2           State
========================================================================
5    network-1         VC-Group network-1   ATM3/0 1/34          UP
        Step 3   Enter the show frame-relay pvcEXEC command to view statistics about Frame Relay interfaces:

        Example:
        Router# show frame-relay pvc
PVC Statistics for interface Serial1/0 (Frame Relay DCE)
              Active     Inactive      Deleted       Static
  Local          0            0            0            0
  Switched       1            0            0            0
  Unused         0            0            0            0
DLCI = 18, DLCI USAGE = FRF.5, PVC STATUS = ACTIVE, INTERFACE =
Serial1/0
  input pkts 22            output pkts 21           in bytes 2140
  out bytes 2110           dropped pkts 0           in FECN pkts 0
  in BECN pkts 0           out FECN pkts 0          out BECN pkts 0
  in DE pkts 0             out DE pkts 0
  out bcast pkts 0          out bcast bytes 0            Num Pkts
Switched 22
  pvc create time 02:02:49, last time pvc status changed 02:02:42
        Step 4   Enter the show atm pvcEXEC command to view ATM PVCs and statistics:

        Example:
        Router# show atm pvc
            VCD/                                      Peak  Avg/Min   Burst
Interface   Name   VPI   VCI   Type   Encaps    SC    Kbps   Kbps     Cells    Sts
3/0          10     1     32    PVC   FR-ATM    UBR  155000                    		UP

        Configuring and Verifying FRF.8

        Configuring an FRF.8 Service Interworking Connection

        To configure FRF.8 one-to-one protocol mapping between a Frame Relay end user and an ATM end user, use the following commands beginning in global configuration command mode:

        SUMMARY STEPS

          1.    Router(config)# interface serial number

          2.    Router(config-if)# frame-relay interface-dlci dlci switched

          3.    Router(config)# interface atm number

          4.    Router(config-if)# pvc [PVC-name] vpi / vci

          5.    Router(config-if)# encapsulation aal5mux fr-atm-srv

          6.    Router(config)# connect connection-name FR-interface FR-DLCI ATM-interface ATM-vpi / vci service-interworking

          7.    Do one of the following:

          • Router(config-frf8)# clp-bit {0 | 1 | map-de}

          8.    Router( config-frf8 )# service translation

          9.    Router( config-frf8 )# end


        DETAILED STEPS
           Command or ActionPurpose
          Step 1 Router(config)# interface serial number 

          Configures the Frame Relay interface and enters interface configuration mode.

           
          Step 2 Router(config-if)# frame-relay interface-dlci dlci switched 

          Configures a switched Frame Relay DLCI.

           
          Step 3 Router(config)# interface atm number 

          Configures the ATM interface and enters interface configuration mode.

           
          Step 4 Router(config-if)# pvc [PVC-name] vpi / vci 

          Creates the ATM PVC and virtual path identifier/virtual channel identifier (VPI/VCI). The VCI is a 16-bit field in the header of the ATM cell.

           
          Step 5 Router(config-if)# encapsulation aal5mux fr-atm-srv 

          Configures the ATM adaption layer (AAL) and encapsulation type for the ATM PVC.

           
          Step 6 Router(config)# connect connection-name FR-interface FR-DLCI ATM-interface ATM-vpi / vci service-interworking 

          Creates a connection to connect the Frame Relay DLCI to the ATM PVC and configures FRF.8 encapsulation.

           
          Step 7Do one of the following:
          • Router(config-frf8)# clp-bit {0 | 1 | map-de}


          Example:
          Router(config-frf8)# de-bit {0 | 1 | map-clp


          Example:
          

        
          
 

          Example:
          
          
                    
          

        
          
 

          Example:
          
          
          

        
          
 

          Example:
          
          
          Router(config-frf8)# efci-bit {0 | map-fecn
          

        
          
 
                		 
          
          
(On Cisco MC3810, 2600 series, and 3600 series routers only) Sets the ATM cell loss priority (CLP) field in the ATM cell header.
          

          
          

          
          
(On Cisco MC3810, 2600 series, and 3600 series routers only) Sets the Frame Relay discard eligible (DE) bit field in the Frame Relay cell header.
          

          
          

          
          
(On Cisco MC3810, 2600 series, and 3600 series routers only) Sets the explicit forward congestion indication (EFCI) bit field in the ATM cell header.
          

         
      
          

          Step 8
Router(
config-frf8
)#
 service translation 
       
          
          
Enables upper layer user protocol encapsulation for Frame Relay-to-ATM service interworking.
          

         
      
          

          Step 9
Router(
config-frf8
)#
 end 
       
          
          
Ends configuration mode and enters EXEC mode.
          

          
          
Use the exit command to exit a submode and reenter global configuration command mode.
          

         
      
          

          
What to Do Next
          
      
          
To disconnect the FRF.8 interworking connection, use the shutdown connect subcommand.
          

    
          

          

          Verifying FRF.8 Configuration
          

          
      
          
To verify correct configuration of the Frame Relay-to-ATM Service Interworking (FRF.8) feature, perform the following tasks:
          

    
          
SUMMARY STEPS
            1.   
      
Enter the show connect id EXEC command to view information, including interworking parameters set, about the specified connection identifier:
            

            2.   
      
Enter the show connect port EXEC command to view information about the connection on a specific interface:
            

            3.   
      
Enter the show frame-relay pvcEXEC command to view statistics about Frame Relay interfaces:
            

            4.   
      
Enter the show atm pvcEXEC command to view ATM PVCs and statistics:
            


          DETAILED STEPS
            Step 1  
             
Enter the show connect id EXEC command to view information, including interworking parameters set, about the specified connection identifier: 

            Example:
            
          
            Router# show connect id 10
FR/ATM Service Interworking Connection: service-1
  Status    - UP
  Segment 1 - Serial1/0 DLCI 16
  Segment 2 - ATM3/0 VPI 1 VCI 32
Interworking Parameters -
    service translation
    efci-bit 0
    de-bit map-clp
    clp-bit map-de

            

        
            

            

            Step 2  
             
Enter the show connect port EXEC command to view information about the connection on a specific interface: 

            Example:
            
          
            Router# show connect port atm3/0
ID   Name               Segment 1            Segment 2           State
========================================================================
10   service-1         Serial1/0 16         ATM3/0 1/32          UP

            

        
            

            

            Step 3  
             
Enter the show frame-relay pvcEXEC command to view statistics about Frame Relay interfaces: 

            Example:
            
          
            Router# show frame-relay pvc
PVC Statistics for interface Serial1/0 (Frame Relay DCE)
              Active     Inactive      Deleted       Static
  Local          0            0            0            0
  Switched       1            0            0            0
  Unused         0            0            0            0
DLCI = 18, DLCI USAGE = FRF.5, PVC STATUS = ACTIVE, INTERFACE =
Serial1/0
  input pkts 22            output pkts 21           in bytes 2140
  out bytes 2110           dropped pkts 0           in FECN pkts 0
  in BECN pkts 0           out FECN pkts 0          out BECN pkts 0
  in DE pkts 0             out DE pkts 0
  out bcast pkts 0          out bcast bytes 0            Num Pkts
Switched 22
  pvc create time 02:02:49, last time pvc status changed 02:02:42

            

        
            

            

            Step 4  
             
Enter the show atm pvcEXEC command to view ATM PVCs and statistics: 

            Example:
            
          
            Router# show atm pvc
            VCD/                                      Peak  Avg/Min   Burst
Interface   Name   VPI   VCI   Type   Encaps    SC    Kbps   Kbps     Cells    Sts
3/0          10     1     32    PVC   FRATMSRV    UBR  155000                    		UP
            

        
            

            

            

            

            

            

            Monitoring and Maintaining Frame Relay-to-ATM Interworking
            

            
To display the status of the virtual circuits and the Frame Relay-to-ATM interworking connections, use any of the following commands in EXEC mode
            


            
              
            
Command
            

                        		

              
            
Purpose
            

                        		

            
            

            
              
            Router# show atm pvc [signalling | interface | vcd]
            

            
            
            		

              
            
Displays all ATM PVCs, switched virtual circuits (SVCs), and traffic information. Use the signalling keyword to display ATM interface signalling information for all interfaces. Use the interface keyword to display all PVCs and SVCs on the interface or subinterface. Use the vcd argument to specify the ATM VCD number (1-1023) about which to display information. 
            

                        		

            

            
              
            Router# show connect [all | element | ID | name | port]
            

            
            
            		

              
            
Displays connection statistics. Use the optional all keyword to display statistics about all connections. Use the optional element, ID, name, and port arguments to display particular connection details.
            

                        		

            

            
              
            Router# show frame-relay pvc
            

            
            
            		

              
            
Displays statistics about Frame Relay interfaces.
            

                        		

            

            
              
            Router# show vc-group
            

            
            
            		

              
            
Displays the names of all VC groups.
            

                        		

            
            

            

            

            

            

            

            Configuration Examples for Frame Relay-ATM Interworking
            

            

            FRF.5 One-to-One Connection Example
            

            
The following example shows how to configure an FRF.5 one-to-one connection:
            

            ! Configure a switched Frame Relay DLCI
!
interface serial0
 frame-relay interface-dlci 100 switched
!
! Configure ATM PVC with FRF.5 encapsulation
!
interface atm3/0
 pvc 0/32
  encapsulation aal5mux frame-relay
!
! Create a connection to connect Frame Relay DLCI 100 to ATM PVC 0/32
!
connect serial0 100 atm3/0 0/32 network-interworking
 clp-bit 1
 de-bit map-clp
            


            Note
            
Congestion management parameters are not available for Frame Relay-ATM Interworking on the Cisco 7200 series routers.
            

            

            

            

            FRF.5 Many-to-One Connection Example
            

            
The following example shows how to configure an FRF.5 many-to-one connection:
            

            ! Configure a Frame Relay VC group
!
! The vc-group command assigns Frame Relay DLCI 16, 17, 18,
! and 19 to a VC group named ’friends’.
!
vc-group friends
 serial0 16 16
 serial0 17 17
 serial0 18 18
 serial0 19 19
!
! Configure an ATM PVC with FRF.5 encapsulation
!
interface atm3/0
 pvc 0/32
  encapsulation aal5mux frame-relay
!
! Create a connection which connects VC group ’friends’ to ATM PVC 0/32
! and configure FR DE field mapping to match ATM CLP field
!
connect vc-group friends atm3/0 0/32
 de-bit map-clp
            


            Note
            
Congestion management parameters are not available for Frame Relay-ATM Interworking on the Cisco 7200 series routers.
            

            

            

            

            FRF.8 Service Interworking Example
            

             The following example shows how to configure an FRF.8 service
		interworking connection:
	 
            

            ! Configure a switched Frame Relay DLCI
!
interface serial 0
 frame-relay interface-dlci 100 switched
!
! Configure an ATM PVC with FRF.8 encapsulation
!
interface atm1/0
 pvc 0/32
  encapsulation aal5mux fr-atm-srv
!
! Create a connection that connects Frame Relay DLCI 100 to ATM PVC 1/32
!
connect service-1 Serial0 100 ATM3/0 0/32 service-interworking
 efci-bit map-fecn
            


            Note
             Congestion management parameters are not available for Frame
		Relay-ATM Interworking on the Cisco 7200 series routers.
	 
            

            

            

            

            

            


            
















Configuring Frame Relay-ATM Interworking

                              

            


            Configuring Frame Relay-ATM Interworking
            

            
The Frame Relay-ATM Interworking features enable Frame Relay and ATM networks to exchange data, despite differing network protocols. There are two types of Frame Relay-ATM Interworking:
            


            
For further general information about Frame Relay-ATM Interworking, see the "
Wide-Area Networking Overview
" chapter at the beginning of this book.
            

            
For a description of the commands used to configure Frame Relay-ATM Interworking, refer to the chapter "Frame Relay-ATM Interworking Commands
"
 in the Cisco IOS Wide-Area Networking Command Reference. To locate documentation of other commands that appear in this chapter, use the command reference master index or search online. 
            

            
To identify the hardware platform or software image information associated with a feature, use the Feature Navigator
 
on Cisco.com to search for information about the feature or refer to the software release notes for a specific release. For more information, see the section 
"Identifying Supported Platforms"
 in the chapter "Using Cisco IOS Software."
            

            
For Cisco IOS Release 12.2, Frame Relay-ATM Interworking is supported on the following platforms and interface types:
            

            • 
Cisco MC3810: T1/E1 ATM interface
              

              • 

            • 
Cisco 3600 series routers: OC-3 and inverse multiplexing over ATM (IMA) network modules
              

              • 

            • 
Cisco 2600 series routers: OC-3 and IMA network modules
              

              • 

            • 
Cisco 7200 series routers: all Cisco 7200 series ATM interface types
              

              • 

            

            

            Finding Feature Information
            

             Your software release may not support all the features documented in this module. For the latest caveats and feature information, see 
		Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module. 
	 
            

            Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to 
		www.cisco.com/​go/​cfn. An account on Cisco.com is not required. 
	 
            

            

            

            Prerequisites
            

            
If the end station is a Cisco router that is connected to an FRF.8 router or switch in translation mode, you must configure the end station with IETF encapsulation (not Cisco encapsulation, which is the default). To do so, you use the encapsulation frame relay ietf command.
            

            
IETF encapsulation on the end station is not required for FRF.8 in transparent mode (or for FRF.5 in translation mode or transparent mode). The FRF.5 or FRF.8 router or switch itself does not need IETF encapsulation in translation mode or transparent mode.
            

            

            

            Information About Frame Relay-ATM Interworking
            

            

            FRF.5 Frame Relay-ATM Network Interworking
            

             FRF.5 provides network interworking functionality that allows Frame Relay end users to communicate over an intermediate ATM network that supports FRF.5. Multiprotocol encapsulation and other higher-layer procedures are transported transparently, just as they would be over leased lines. The figure below illustrates this concept. 
	 
            

            Figure 1. Frame Relay-to-ATM Network Interworking (FRF.5) 

            

             FRF.5 describes network interworking requirements between Frame Relay Bearer Services and Broadband ISDN (BISDN) permanent virtual circuit (PVC) services. 
	 
            

             The FRF.5 standard is defined by the Frame Relay Forum Document Number FRF.5: 
		Frame Relay/ATM PVC Network Interworking Implementation Agreement. 
		 For more information about which sections of this implementation agreement are supported by Cisco IOS software, see the appendix " Frame Relay-ATM Interworking Supported Standards " in this book. 
	 
            


            Note
             On Cisco 7200 series routers, Frame Relay-ATM interworking does not support congestion management bit mapping. 
	 
            

            

            

            

            FRF.8 Frame Relay-ATM Service Interworking
            

             FRF.8 provides service interworking functionality that allows a Frame Relay end user to communicate with an ATM end user. Traffic is translated by a protocol converter that provides communication between dissimilar Frame Relay and ATM equipment. The figure below illustrates this concept. 
	 
            

            Figure 2. Frame Relay-to-ATM Service Interworking (FRF.8)

            

             FRF.8 describes a one-to-one mapping between a Frame Relay and an ATM PVC. 
	 
            

             The FRF.8 standard is defined by the Frame Relay Forum Document Number FRF.8: 
		Frame Relay/ATM PVC Network Service Interworking Implementation Agreement. 
		 For more information about which sections of this implementation agreement are supported, see the appendix " Frame Relay-ATM Interworking Supported Standards " in this book. 
	 
            


            Note
             On Cisco 7200 series routers, Frame Relay-ATM interworking does not support congestion management bit mapping. 
	 
            

            

            

            

            

            How to Configure Frame Relay-ATM Interworking
            

            
    
            

            

            Configuring and Verifying FRF.5
            

            

            Configuring an FRF.5 One-to-One Network Interworking Connection
            

            
      
            
To configure FRF.5 encapsulation for a one-to-one connection between two Frame Relay end users over an intermediate ATM network, use the following commands beginning in global configuration mode:
            

    
            
SUMMARY STEPS
              1.   
      
Router(config)# interface serial number
              

              2.   
      
Router(config-if)#
 frame-relay interface-dlci dlci switched
              

              3.   
      
Router(config)# interface atm number
              

              4.   
      
Router(config-if)#
 pvc [PVC-name] vpi / vci
              

              5.   
      
Router(config-if-atm-vc)#
 encapsulation aal5mux frame-relay
              

              6.   
      
Router(config)# connect connection-name FR-interface FR-DLCI ATM-interface ATM-PVC network-interworking
              

              7.   
      Do one of the following:
              • 
Router(config-frf5)# clp-bit {0 | 1 | map-de}
                • 

              • 
          
                • 

              • 
          
                • 

              • 
Router(config-frf5)# de-bit map-clp
                • 

              

              

              8.   
      
Router(
config-frf5
)#
 end
              


            DETAILED STEPS
               Command or ActionPurpose
              Step 1
Router(config)# interface serial number 
       
          
              
Configures the Frame Relay interface and enters interface configuration mode.
              

         
      
              

              Step 2
Router(config-if)#
 frame-relay interface-dlci dlci switched 
       
          
              
Configures a switched Frame Relay DLCI.
              

         
      
              

              Step 3
Router(config)# interface atm number 
       
          
              
Configures the ATM interface and enters interface configuration mode.
              

         
      
              

              Step 4
Router(config-if)#
 pvc [PVC-name] vpi / vci 
       
          
              
Creates the ATM PVC and virtual path identifier/virtual channel identifier (VPI/VCI). The VCI is a 16-bit field in the header of the ATM cell.
              

         
      
              

              Step 5
Router(config-if-atm-vc)#
 encapsulation aal5mux frame-relay 
       
          
              
Configures the ATM adaption layer (AAL) and encapsulation type for the ATM PVC.
              

         
      
              

              Step 6
Router(config)# connect connection-name FR-interface FR-DLCI ATM-interface ATM-PVC network-interworking 
       
          
              
Creates a connection to connect the Frame Relay DLCI to the ATM PVC and configures FRF.5 encapsulation.
              

         
      
              

              Step 7Do one of the following:
              • 
Router(config-frf5)# clp-bit {0 | 1 | map-de}
                • 

              • 
          
                • 

              • 
          
                • 

              • 
Router(config-frf5)# de-bit map-clp
                • 

              
 
                    		 
          
              
(On Cisco MC3810, 2600 series, and 3600 series routers only) Sets the ATM cell loss priority (CLP) field in the ATM cell header.
              

          
              
(On Cisco MC3810, 2600 series, and 3600 series routers only) Sets discard eligible (DE) bit mapping from ATM to Frame Relay.
              

         
      
              

              Step 8
Router(
config-frf5
)#
 end 
       
          
              
Ends configuration mode and enters EXEC mode.
              

          
              
Use the exit command to exit a submode and reenter global configuration command mode.
              

         
      
              

              
What to Do Next
              
      
              
To disconnect the FRF.5 interworking connection, use the shutdown connect subcommand.
              

    
              

              

              Configuring an FRF.5 Many-to-One Network Interworking Connection
              

              
      
              
To configure FRF.5 encapsulation for a many-to-one connection between two Frame Relay end users over an intermediate ATM network, use the following commands beginning in global configuration command mode:
              

    
              
SUMMARY STEPS
                1.   
      
Router(config)# interface serial number
                

                2.   
      
Router(config-if)#
 frame-relay interface-dlci dlci switched
                

                3.   
      
Router(config)# vc-group group-name
                

                4.   
      
Router(config-vc-group)# FR-interface-name FR-DLCI[FR-SSCS-DLCI]
                

                5.   
      
Router(config)# interface atm number
                

                6.   
      
Router(config-if)#
 pvc [PVC-name] vpi / vci
                

                7.   
      
Router(config-if-atm-vc)#
 encapsulation aal5mux frame-relay
                

                8.   
      
Router(config)# connect connection-name vc-group group-name ATM-interface ATM-vpi/vci
                

                9.   
      Do one of the following:
                • 
Router(config-frf5)# clp-bit {0 | 1 | map-de}
                  • 

                • 
          
                  • 

                • 
          
                  • 

                • 
          
                  • 

                

                

                10.   
      
Router(
config-frf5
)#
 end
                


              DETAILED STEPS
                 Command or ActionPurpose
                Step 1
Router(config)# interface serial number 
       
          
                
Configures the Frame Relay interface and enters interface configuration mode.
                

         
      
                

                Step 2
Router(config-if)#
 frame-relay interface-dlci dlci switched 
       
          
                
Configures a switched Frame Relay DLCI.
                

         
      
                

                Step 3
Router(config)# vc-group group-name 
       
          
                
Assigns multiple Frame Relay DLCIs to a VC group.
                

         
      
                

                Step 4
Router(config-vc-group)# FR-interface-name FR-DLCI[FR-SSCS-DLCI] 
       
          
                
Specifies the Frame Relay DLCIs in the VC group and maps them to the Frame Relay-SSCS DLCIs. If the optional Frame Relay-SSCS DLCI value is not specified, its value will default to 1022.
                

         
      
                

                Step 5
Router(config)# interface atm number 
       
          
                
Configures the ATM interface and enters interface configuration mode.
                

         
      
                

                Step 6
Router(config-if)#
 pvc [PVC-name] vpi / vci 
       
          
                
Creates the ATM PVC and VPI/VCI. The VCI is a 16-bit field in the header of the ATM cell.
                

         
      
                

                Step 7
Router(config-if-atm-vc)#
 encapsulation aal5mux frame-relay 
       
          
                
Configures the AAL and encapsulation type for the ATM PVC.
                

         
      
                

                Step 8
Router(config)# connect connection-name vc-group group-name ATM-interface ATM-vpi/vci 
       
          
                
Creates a connection to connect the VC group to the ATM PVC.
                

         
      
                

                Step 9Do one of the following:
                • 
Router(config-frf5)# clp-bit {0 | 1 | map-de}
                  • 

                • 
          
                  • 

                • 
          
                  • 

                • 
          
                  • 

                
 

                Example:
                
          
                Router(config-frf5)# de-bit map-clp
                

        
                
 
                      		 
          
                
(On Cisco MC3810, 2600 series, and 3600 series routers only) Sets the ATM CLP field in the ATM cell header.
                

          
                
          
                

          
                
(On Cisco MC3810, 2600 series, and 3600 series routers only) Sets DE bit mapping from ATM to Frame Relay.
                

         
      
                

                Step 10
Router(
config-frf5
)#
 end 
       
          
                
Ends configuration mode and enters EXEC mode.
                

          
                
Use the exit command to exit a submode and reenter global configuration command mode.
                

         
      
                

                
What to Do Next
                
      
                
To disconnect the FRF.5 interworking connection, use the shutdown connect subcommand.
                

    
                

                

                Verifying FRF.5 Configuration
                

                
      
                
To verify correct configuration of the Frame Relay-to-ATM Network Interworking (FRF.5) feature, perform the following tasks:
                

    
                
SUMMARY STEPS
                  1.   
      
Enter the show connect id EXEC command to view information, including interworking parameters set, for the specified connection identifier:
                  

                  2.   
      
Enter the show connect port EXEC command to view information about the connection on a specific interface:
                  

                  3.   
      
Enter the show frame-relay pvcEXEC command to view statistics about Frame Relay interfaces:
                  

                  4.   
      
Enter the show atm pvcEXEC command to view ATM PVCs and statistics:
                  


                DETAILED STEPS
                  Step 1  
             
Enter the show connect id EXEC command to view information, including interworking parameters set, for the specified connection identifier: 

                  Example:
                  
          
                  Router# show connect id 5
FR/ATM Network Interworking Connection: network-1
  Status    - UP
  Segment 1 - VC-Group network-1
  Segment 2 - ATM3/0 VPI 1 VCI 34
  Interworking Parameters -
    de-bit map-clp
    clp-bit map-de

                  

        
                  

                  

                  Step 2  
             
Enter the show connect port EXEC command to view information about the connection on a specific interface: 

                  Example:
                  
          
                  Router# show connect port atm3/0
ID   Name               Segment 1            Segment 2           State
========================================================================
5    network-1         VC-Group network-1   ATM3/0 1/34          UP
                  

        
                  

                  

                  Step 3  
             
Enter the show frame-relay pvcEXEC command to view statistics about Frame Relay interfaces: 

                  Example:
                  
          
                  Router# show frame-relay pvc
PVC Statistics for interface Serial1/0 (Frame Relay DCE)
              Active     Inactive      Deleted       Static
  Local          0            0            0            0
  Switched       1            0            0            0
  Unused         0            0            0            0
DLCI = 18, DLCI USAGE = FRF.5, PVC STATUS = ACTIVE, INTERFACE =
Serial1/0
  input pkts 22            output pkts 21           in bytes 2140
  out bytes 2110           dropped pkts 0           in FECN pkts 0
  in BECN pkts 0           out FECN pkts 0          out BECN pkts 0
  in DE pkts 0             out DE pkts 0
  out bcast pkts 0          out bcast bytes 0            Num Pkts
Switched 22
  pvc create time 02:02:49, last time pvc status changed 02:02:42

                  

        
                  

                  

                  Step 4  
             
Enter the show atm pvcEXEC command to view ATM PVCs and statistics: 

                  Example:
                  
          
                  Router# show atm pvc
            VCD/                                      Peak  Avg/Min   Burst
Interface   Name   VPI   VCI   Type   Encaps    SC    Kbps   Kbps     Cells    Sts
3/0          10     1     32    PVC   FR-ATM    UBR  155000                    		UP
                  

        
                  

                  

                  

                  

                  

                  

                  Configuring and Verifying FRF.8
                  

                  

                  Configuring an FRF.8 Service Interworking Connection
                  

                  
      
                  
To configure FRF.8 one-to-one protocol mapping between a Frame Relay end user and an ATM end user, use the following commands beginning in global configuration command mode:
                  

    
                  
SUMMARY STEPS
                    1.   
      
Router(config)# interface serial number
                    

                    2.   
      
Router(config-if)#
 frame-relay interface-dlci dlci switched
                    

                    3.   
      
Router(config)# interface atm number
                    

                    4.   
      
Router(config-if)#
 pvc [PVC-name] vpi / vci
                    

                    5.   
      
Router(config-if)#
 encapsulation aal5mux fr-atm-srv
                    

                    6.   
      
Router(config)# connect connection-name FR-interface FR-DLCI ATM-interface ATM-vpi / vci service-interworking
                    

                    7.   
      Do one of the following:
                    • 
Router(config-frf8)# clp-bit {0 | 1 | map-de}
                      • 

                    • 
          
                      • 

                    • 
          
                      • 

                    • 
          
                      • 

                    

                    

                    8.   
      
Router(
config-frf8
)#
 service translation
                    

                    9.   
      
Router(
config-frf8
)#
 end
                    


                  DETAILED STEPS
                     Command or ActionPurpose
                    Step 1
Router(config)# interface serial number 
       
          
                    
Configures the Frame Relay interface and enters interface configuration mode.
                    

         
      
                    

                    Step 2
Router(config-if)#
 frame-relay interface-dlci dlci switched 
       
          
                    
Configures a switched Frame Relay DLCI.
                    

         
      
                    

                    Step 3
Router(config)# interface atm number 
       
          
                    
Configures the ATM interface and enters interface configuration mode.
                    

         
      
                    

                    Step 4
Router(config-if)#
 pvc [PVC-name] vpi / vci 
       
          
                    
Creates the ATM PVC and virtual path identifier/virtual channel identifier (VPI/VCI). The VCI is a 16-bit field in the header of the ATM cell.
                    

         
      
                    

                    Step 5
Router(config-if)#
 encapsulation aal5mux fr-atm-srv 
       
          
                    
Configures the ATM adaption layer (AAL) and encapsulation type for the ATM PVC.
                    

         
      
                    

                    Step 6
Router(config)# connect connection-name FR-interface FR-DLCI ATM-interface ATM-vpi / vci service-interworking 
       
          
                    
Creates a connection to connect the Frame Relay DLCI to the ATM PVC and configures FRF.8 encapsulation.
                    

         
      
                    

                    Step 7Do one of the following:
                    • 
Router(config-frf8)# clp-bit {0 | 1 | map-de}
                      • 

                    • 
          
                      • 

                    • 
          
                      • 

                    • 
          
                      • 

                    
 

                    Example:
                    
          
                    Router(config-frf8)# de-bit {0 | 1 | map-clp
                    

        
                    
 

                    Example:
                    
          
                    

        
                    
 

                    Example:
                    
          
                              
                    

        
                    
 

                    Example:
                    
          
                    

        
                    
 

                    Example:
                    
          
                    Router(config-frf8)# efci-bit {0 | map-fecn
                    

        
                    
 
                          		 
          
                    
(On Cisco MC3810, 2600 series, and 3600 series routers only) Sets the ATM cell loss priority (CLP) field in the ATM cell header.
                    

          
                    

          
                    
(On Cisco MC3810, 2600 series, and 3600 series routers only) Sets the Frame Relay discard eligible (DE) bit field in the Frame Relay cell header.
                    

          
                    

          
                    
(On Cisco MC3810, 2600 series, and 3600 series routers only) Sets the explicit forward congestion indication (EFCI) bit field in the ATM cell header.
                    

         
      
                    

                    Step 8
Router(
config-frf8
)#
 service translation 
       
          
                    
Enables upper layer user protocol encapsulation for Frame Relay-to-ATM service interworking.
                    

         
      
                    

                    Step 9
Router(
config-frf8
)#
 end 
       
          
                    
Ends configuration mode and enters EXEC mode.
                    

          
                    
Use the exit command to exit a submode and reenter global configuration command mode.
                    

         
      
                    

                    
What to Do Next
                    
      
                    
To disconnect the FRF.8 interworking connection, use the shutdown connect subcommand.
                    

    
                    

                    

                    Verifying FRF.8 Configuration
                    

                    
      
                    
To verify correct configuration of the Frame Relay-to-ATM Service Interworking (FRF.8) feature, perform the following tasks:
                    

    
                    
SUMMARY STEPS
                      1.   
      
Enter the show connect id EXEC command to view information, including interworking parameters set, about the specified connection identifier:
                      

                      2.   
      
Enter the show connect port EXEC command to view information about the connection on a specific interface:
                      

                      3.   
      
Enter the show frame-relay pvcEXEC command to view statistics about Frame Relay interfaces:
                      

                      4.   
      
Enter the show atm pvcEXEC command to view ATM PVCs and statistics:
                      


                    DETAILED STEPS
                      Step 1  
             
Enter the show connect id EXEC command to view information, including interworking parameters set, about the specified connection identifier: 

                      Example:
                      
          
                      Router# show connect id 10
FR/ATM Service Interworking Connection: service-1
  Status    - UP
  Segment 1 - Serial1/0 DLCI 16
  Segment 2 - ATM3/0 VPI 1 VCI 32
Interworking Parameters -
    service translation
    efci-bit 0
    de-bit map-clp
    clp-bit map-de

                      

        
                      

                      

                      Step 2  
             
Enter the show connect port EXEC command to view information about the connection on a specific interface: 

                      Example:
                      
          
                      Router# show connect port atm3/0
ID   Name               Segment 1            Segment 2           State
========================================================================
10   service-1         Serial1/0 16         ATM3/0 1/32          UP

                      

        
                      

                      

                      Step 3  
             
Enter the show frame-relay pvcEXEC command to view statistics about Frame Relay interfaces: 

                      Example:
                      
          
                      Router# show frame-relay pvc
PVC Statistics for interface Serial1/0 (Frame Relay DCE)
              Active     Inactive      Deleted       Static
  Local          0            0            0            0
  Switched       1            0            0            0
  Unused         0            0            0            0
DLCI = 18, DLCI USAGE = FRF.5, PVC STATUS = ACTIVE, INTERFACE =
Serial1/0
  input pkts 22            output pkts 21           in bytes 2140
  out bytes 2110           dropped pkts 0           in FECN pkts 0
  in BECN pkts 0           out FECN pkts 0          out BECN pkts 0
  in DE pkts 0             out DE pkts 0
  out bcast pkts 0          out bcast bytes 0            Num Pkts
Switched 22
  pvc create time 02:02:49, last time pvc status changed 02:02:42

                      

        
                      

                      

                      Step 4  
             
Enter the show atm pvcEXEC command to view ATM PVCs and statistics: 

                      Example:
                      
          
                      Router# show atm pvc
            VCD/                                      Peak  Avg/Min   Burst
Interface   Name   VPI   VCI   Type   Encaps    SC    Kbps   Kbps     Cells    Sts
3/0          10     1     32    PVC   FRATMSRV    UBR  155000                    		UP
                      

        
                      

                      

                      

                      

                      

                      

                      Monitoring and Maintaining Frame Relay-to-ATM Interworking
                      

                      
To display the status of the virtual circuits and the Frame Relay-to-ATM interworking connections, use any of the following commands in EXEC mode
                      


                      
              
                      
Command
                      

                                  		

              
                      
Purpose
                      

                                  		

                      
                      

                      
              
                      Router# show atm pvc [signalling | interface | vcd]
                      

            
                      
                      		

              
                      
Displays all ATM PVCs, switched virtual circuits (SVCs), and traffic information. Use the signalling keyword to display ATM interface signalling information for all interfaces. Use the interface keyword to display all PVCs and SVCs on the interface or subinterface. Use the vcd argument to specify the ATM VCD number (1-1023) about which to display information. 
                      

                                  		

                      

                      
              
                      Router# show connect [all | element | ID | name | port]
                      

            
                      
                      		

              
                      
Displays connection statistics. Use the optional all keyword to display statistics about all connections. Use the optional element, ID, name, and port arguments to display particular connection details.
                      

                                  		

                      

                      
              
                      Router# show frame-relay pvc
                      

            
                      
                      		

              
                      
Displays statistics about Frame Relay interfaces.
                      

                                  		

                      

                      
              
                      Router# show vc-group
                      

            
                      
                      		

              
                      
Displays the names of all VC groups.
                      

                                  		

                      
                      

                      

                      

                      

                      

                      

                      Configuration Examples for Frame Relay-ATM Interworking
                      

                      

                      FRF.5 One-to-One Connection Example
                      

                      
The following example shows how to configure an FRF.5 one-to-one connection:
                      

                      ! Configure a switched Frame Relay DLCI
!
interface serial0
 frame-relay interface-dlci 100 switched
!
! Configure ATM PVC with FRF.5 encapsulation
!
interface atm3/0
 pvc 0/32
  encapsulation aal5mux frame-relay
!
! Create a connection to connect Frame Relay DLCI 100 to ATM PVC 0/32
!
connect serial0 100 atm3/0 0/32 network-interworking
 clp-bit 1
 de-bit map-clp
                      


                      Note
                      
Congestion management parameters are not available for Frame Relay-ATM Interworking on the Cisco 7200 series routers.
                      

                      

                      

                      

                      FRF.5 Many-to-One Connection Example
                      

                      
The following example shows how to configure an FRF.5 many-to-one connection:
                      

                      ! Configure a Frame Relay VC group
!
! The vc-group command assigns Frame Relay DLCI 16, 17, 18,
! and 19 to a VC group named ’friends’.
!
vc-group friends
 serial0 16 16
 serial0 17 17
 serial0 18 18
 serial0 19 19
!
! Configure an ATM PVC with FRF.5 encapsulation
!
interface atm3/0
 pvc 0/32
  encapsulation aal5mux frame-relay
!
! Create a connection which connects VC group ’friends’ to ATM PVC 0/32
! and configure FR DE field mapping to match ATM CLP field
!
connect vc-group friends atm3/0 0/32
 de-bit map-clp
                      


                      Note
                      
Congestion management parameters are not available for Frame Relay-ATM Interworking on the Cisco 7200 series routers.
                      

                      

                      

                      

                      FRF.8 Service Interworking Example
                      

                       The following example shows how to configure an FRF.8 service
		interworking connection:
	 
                      

                      ! Configure a switched Frame Relay DLCI
!
interface serial 0
 frame-relay interface-dlci 100 switched
!
! Configure an ATM PVC with FRF.8 encapsulation
!
interface atm1/0
 pvc 0/32
  encapsulation aal5mux fr-atm-srv
!
! Create a connection that connects Frame Relay DLCI 100 to ATM PVC 1/32
!
connect service-1 Serial0 100 ATM3/0 0/32 service-interworking
 efci-bit map-fecn
                      


                      Note
                       Congestion management parameters are not available for Frame
		Relay-ATM Interworking on the Cisco 7200 series routers.