Contents

Multilink Frame Relay over L2TPv3AToM

This feature enables Multilink Frame Relay switching over Layer 2 Tunnel Protocol Version 3 (L2TPv3) and Any Transport over MPLS (AToM). The feature works with like-to-like interfaces and disparate interfaces (L2VPN interworking).

Multilink Frame Relay is the logical grouping of one or more physical interfaces between two devices of the User-to-Network Interface/Network-to-Network Interface (UNI/NNI) as one single Frame Relay data link.

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 for Configuring Multilink Frame Relay over L2TPv3 AToM

Before configuring Multilink Frame Relay over L2TPv3/AToM, you should understand how to configure Layer 2 virtual private networks (VPNs) and Multilink Frame Relay. See the Additional References for pointers to the feature modules that explain how to configure and use those features.

Restrictions for Configuring Multilink Frame Relay over L2TPv3 AToM

  • Only data-link connection identifier (DLCI)-to-DLCI switching, where each DLCI maps to its own pseudowire, is supported. Port-port mode (also known as HDLC mode), where the entire content of the port, including the Local Management Interface (LMI), is carried across a single pseudowire, is not supported.

  • The following functionality is not supported:
    • UNI/NNI or end-to-end fragmentation
    • Nonstop forwarding/stateful switchover
    • Four-byte DLCIs

  • On the Cisco 7500 series routers, all bundle links must reside on the same port adapter (PA) of the Versatile Interface Processor (VIP). Links spreading across PAs are not supported.

  • Cisco 7500 series routers support the VIP6-80, VIP4-80, VIP4-50, VIP2-50, CH-STM1, CT3/CE3, CT1/CE1, PA-4T+, and PA-8T port adapters.

  • On the Cisco 12000 series routers, Multilink Frame Relay is supported only on the following pluggable modules: Cisco 4-port channelized T3 (DSO) shared port adapter, Cisco 8-port channelized T1/E1 shared port adapter, and the Cisco 1-port channelize OC-3/STM-1shared port adapter.

Information About Configuring Multilink Frame Relay over L2TPv3 AToM

Multilink Frame Relay over L2TPv3 AToM

Multilink Frame Relay over L2TPv3/AToM supports the following functionality:

  • Permanent virtual circuit (PVC) status signaling

  • LMI types cisco, q933a, and ANSI

  • Sequencing

  • Frame Relay policing (nondistributed)

  • Type of service (ToS) marking for L2TPv3

Internetworking Support for Multilink Frame Relay

Interworking support for Multilink Frame Relay interfaces supports the following functionality:

  • Frame Relay to Ethernet/VLAN (Ethernet and IP interworking)

  • Frame Relay to PPP and ATM (IP interworking)

  • Cisco and Internet Engineering Task Force (IETF) encapsulation on the customer-edge (CE) router

  • Sequencing

  • LMI interworking to notify CE routers of PVC status changes

Quality of Service Support for Multilink Frame Relay over L2TPv3 AToM


Note

Quality of Service features are not supported in Cisco IOS Release 12.4(11)T.

L2VPN quality of service (QoS) features supported for Frame Relay are also supported with the Multilink Frame Relay over L2TPv3/AToM feature. You can attach an input service policy to the Multilink Frame Relay interface or individual DLCIs on the interface using the map-class mechanism to police or mark the traffic. You can attach an output policy to the Multilink Frame Relay (MFR) interface to perform class-based queueing, including per-DLCI queueing using the match fr-dlcicommand.

The following ingress QoS features are supported with the Multilink Frame Relay over L2TPv3/AToM feature:

  • Interface input policy matching on the discard eligibility (DE) bit to set Multiprotocol Label Switching (MPLS) EXP or tunnel differentiated services code point (DSCP).

  • Virtual circuit (VC) input policy configured with a color-aware, two-rate, three-color policer using the DE bit as input color and setting the MPLS EXP bit or tunnel DSCP bit based on color.


Note

You cannot use the VC-level and interface-level input policies at the same time on the same interface.

The following egress QoS features are supported with the Multilink Frame Relay over L2TPv3/AToM feature:

  • Egress queueing using tail drop or discard class-based weighted random early detection (WRED). You can use the latter with a core interface input policy to set the discard class based on the MPLS EXP or tunnel DSCP.

  • Interface output policy matching on QoS group (selected by MPLS EXP or tunnel DSCP).

  • Interface aggregate shaping policy with queueing policy.

  • VC output shaping policy with tail drop or discard class-based WRED.

  • Forward explicit congestion notification (FECN)/backward explicit congestion notification (BECN) marking.


Note

You cannot use VC-level and interface-level output policies at the same time on the same interface.


Note

Egress queueing and shaping policies are not supported with Multilink Frame Relay on the Cisco 7200 series routers.

How to Configure Multilink Frame Relay over L2TPv3 AToM

Configuring a Multilink Frame Relay Bundle Interface

Configure a bundle interface to aggregate bandwidth of multiple member links under a single interface to one virtual pipe. To configure a bundle interface for Multilink Frame Relay, perform the following steps.

SUMMARY STEPS

    1.    enable

    2.    configure terminal

    3.    interface mfr number

    4.    frame-relay multilink bid name


DETAILED STEPS
     Command or ActionPurpose
    Step 1 enable


    Example:
    Router> enable
     

    Enables privileged EXEC mode.

    • Enter your password if prompted.

     
    Step 2 configure terminal


    Example:
    Router# configure terminal
     

    Enters global configuration mode.

     
    Step 3 interface mfr number


    Example:
    

        
    
 

    Example:
    
          
    Router(config)# interface mfr 1 

    

        
    
 
          		 
          
    
Configures a multilink Frame Relay bundle interface and enters interface configuration mode. 
    

         
      
    

    Step 4
          
            frame-relay
            multilink
            bid
          
          
            name
          
        
     

    Example:
    
          
    

        
    
 

    Example:
    
          
    Router(config-if)# frame-relay multilink bid int1
    

        
    
 

    Example:
    
          
    

        
    
 
          		 
          
    
(Optional) Assigns a bundle identification name to a multilink Frame Relay bundle. 
    

          
    Note   
                
              
    
The bundle identification (BID) will not go into effect until the interface has gone from the down state to the up state. One way to bring the interface down and back up again is by using the shutdown and no shutdowncommands in interface configuration mode.
    

    

         
      
    

    

    

    

    Configuring a Multilink Frame Relay Bundle Link Interface
    

    
      
    
Configuring a Multilink Frame Relay bundle link interface allows you to combine bandwidth of multiple lower-speed serial links into a single large pipe and avoid the need of upgrading or purchasing new hardware. To configure a bundle link interface for Multilink Frame Relay, perform the following steps. 
    

    
    
SUMMARY STEPS
      1.   
      
          
            enable
          
        
      

      2.   
      
          
            configure
          
          
            terminal
          
        
      

      3.   
      
          
            interface
          
          
            serial
          
          
            number
          
        
      

      4.   
      
          
            encapsulation
            frame-relay
          
          
            mfr
          
          
            number
           [name]
      

      5.   
      
          
            frame-relay
            multilink
            lid
          
          name
        
      

      6.   
      
          
            frame-relay
            multilink
            hello
          
          
            seconds
          
        
      

      7.   
      
          
            frame-relay
            multilink
            ack
          
          
            seconds
          
        
      

      8.   
      
          
            frame-relay
            multilink
          
          
            retry
          
          
            number
          
        
      


    DETAILED STEPS
       Command or ActionPurpose
      Step 1
          
            enable
          
        
       

      Example:
      
          
      Router> enable
      

        
      
 
            		 
          
      
Enables privileged EXEC mode. 
      

          
      • 
Enter your password if prompted.
        

        • 

      

         
      
      

      Step 2
          
            configure
          
          
            terminal
          
        
       

      Example:
      
          
      Router# configure terminal
      

        
      
 
            		 
          
      
Enters global configuration mode.
      

         
      
      

      Step 3
          
            interface
          
          
            serial
          
          
            number
          
        
       

      Example:
      
          
      Router(config)# interface serial 1/1
      

        
      
 
            		 
          
      
Configures an interface and enters interface configuration mode.
      

         
      
      

      Step 4
          
            encapsulation
            frame-relay
          
          
            mfr
          
          
            number
           [name]
       

      Example:
      
          
      Router(config-if)# encapsulation frame-relay mfr 1
      

        
      
 
            		 
          
      
Creates a multilink Frame Relay bundle link and associates the link with a bundle.
      

          
      Tip   
                
              
            
      
To minimize latency that results from the arrival order of packets, we recommend bundling physical links of the same line speed in one bundle.
      

          
      

         
      
      

      Step 5
          
            frame-relay
            multilink
            lid
          
          name
        
       

      Example:
      
          
      Router(config-if)#
 
frame-relay multilink lid four
      

        
      
 
            		 
          
      
(Optional) Assigns a bundle link identification name with a multilink Frame Relay bundle link.
      

          
      Note   
                
              
      
The bundle link identification (LID) will not go into effect until the interface has gone from the down state to the up state. One way to bring the interface down and back up again is by using the shutdown and no shutdown commands in interface configuration mode.
      

      

         
      
      

      Step 6
          
            frame-relay
            multilink
            hello
          
          
            seconds
          
        
       

      Example:
      
          
      Router(config-if)#
 frame-relay multilink hello 
20
      

        
      
 
            		 
          
      
(Optional) Configures the interval at which a bundle link will send out hello messages. The default value is 10 seconds.
      

         
      
      

      Step 7
          
            frame-relay
            multilink
            ack
          
          
            seconds
          
        
       

      Example:
      
          
      Router(config-if)#
 
frame-relay multilink ack 10
      

        
      
 
            		 
          
      
(Optional) Configures the number of seconds that a bundle link will wait for a hello message acknowledgment before resending the hello message. The default value is 4 seconds.
      

         
      
      

      Step 8
          
            frame-relay
            multilink
          
          
            retry
          
          
            number
          
        
       

      Example:
      
          
      Router(config-if)#
 
frame-relay multilink retry 5
      

        
      
 
            		 
          
      
(Optional) Configures the maximum number of times a bundle link will resend a hello message while waiting for an acknowledgment. The default value is 2 tries.
      

         
      
      

      

      

      

      Connecting Frame Relay PVCs Between Routers
      

      
      
      
By connecting Frame Relay PVCs between routers, you can integrate Frame Relay over a Level 2 VPN backbone, which allows you to use your existing Frame Relay network without upgrading. To connect Frame Relay PVCs between routers, perform the following steps. 
      

    
      
SUMMARY STEPS
        1.   
      
          
            enable
          
        
        

        2.   
      
          
            configure
          
          
            terminal
          
        
        

        3.   
      
          
            connect
          
          
            connection-name
          
          
            mfr
          
          
            number
          
          
            dlci
          
          
            l2transport
          
        
        

        4.   
      
          
            xconnect
          
          
            peer-router-id
          
          
            vcid
          
          
            encapsulation
          
          
            mpls
          
        
        


      DETAILED STEPS
         Command or ActionPurpose
        Step 1
          
            enable
          
        
         

        Example:
        
          
        Router> enable
        

        
        
 
              		 
          
        
Enables privileged EXEC mode. 
        

          
        • 
Enter your password if prompted.
          

          • 

        

         
      
        

        Step 2
          
            configure
          
          
            terminal
          
        
         

        Example:
        
          
        Router# configure terminal
        

        
        
 
              		 
          
        
Enters global configuration mode.
        

         
      
        

        Step 3
          
            connect
          
          
            connection-name
          
          
            mfr
          
          
            number
          
          
            dlci
          
          
            l2transport
          
        
         

        Example:
        
          
        Router(config)# connect fr1 mfr 1 100 l2transport
        

        
        
 
              		 
          
        
Defines connections between Frame Relay PVCs.
        

          
        • 
Using the l2transport keyword specifies that the PVC will not be a locally switched PVC, but will be tunneled over the backbone network.
          

          • 

        • 
The connection-name argument is a text string that you provide. 
          

          • 

        • 
The dlci argument is the DLCI number of the PVC that will be connected.
          

          • 

        

          
        
Enters connect configuration submode. 
        

         
      
        

        Step 4
          
            xconnect
          
          
            peer-router-id
          
          
            vcid
          
          
            encapsulation
          
          
            mpls
          
        
         

        Example:
        
          
        

        
        
 

        Example:
        
          
        

        
        
 

        Example:
        
          
        Router(config-fr-pw-switching)# xconnect 10.0.0.1 123 encapsulation mpls
        

        
        
 
              		 
          
        
Creates the VC to transport the Layer 2 packets. In a DLCI-to-DLCI connection type, Frame Relay over MPLS uses the xconnect command in connect configuration submode. 
        

         
      
        

        

        

        

        Verifying Multilink Frame Relay over L2TPv3 AToM
        

         
		
         To verify the configuration of Multilink Frame Relay, perform the following steps. The tunnel and session should be in the established (est) state.
		
        
 
	 
        
SUMMARY STEPS
          1.   
       
			  
				show 
				l2tunnel 
			  
		  
          

          2.   
       
			  
				show 
				mpls 
				forwarding 
			  
		  
          


        DETAILED STEPS
          Step 1  
              
			  
				show 
				l2tunnel 
			  
		  
            
			 
           On both PE routers, use the following command to verify the configuration of Multilink Frame Relay over L2TPv3:
			 
          
 
		   

          Example:
           
			 
          PE1# show l2tunnel
 
 Tunnel and Session Information Total tunnels 1 sessions 1
LocID RemID Remote Name   State  Remote Address  Port  Sessions L2TPclass
35788 41451 FRWI1         est    10.9.9.9         0     1        l2tp_default_cl
LocID      RemID      TunID      Username, Intf/         State 
                                 Vcid, Circuit                                  
8161       54072      35788      6, MF1:206              est   
PE2# show l2tunnel 
 Tunnel and Session Information Total tunnels 1 sessions 1
LocID RemID Remote Name   State  Remote Address  Port  Sessions L2TPclass
41451 35788 FRWI3         est    10.8.8.8         0     1                       
LocID      RemID      TunID      Username, Intf/          State 
                                 Vcid, Circuit                                  
54072      8161       41451      6, Fa0/1.6:6             est

          
 
		  
          

          

          Step 2  
              
			  
				show 
				mpls 
				forwarding 
			  
		  
            
			 
           On both PE routers, use the following command to verify the configuration of Multilink Frame Relay over MPLS: 
			 
          
 
		   

          Example:
           
			 
          PE1# show mpls forwarding
 
Local  Outgoing    Prefix            Bytes tag  Outgoing   Next Hop    
tag    tag or VC   or Tunnel Id      switched   interface
16     Pop tag     10.0.0.0/24       0          PO4/1/0    point2point  
17     Untagged    l2ckt(5)          0          MF1        point2point  
18     Untagged    l2ckt(6)          0          MF1        point2point  
19     17          10.9.9.9/32       0          PO4/1/0    point2point
PE2# show mpls forwarding
 
Local  Outgoing    Prefix            Bytes tag  Outgoing   Next Hop    
tag    tag or VC   or Tunnel Id      switched   interface              
16     16          10.8.8.8/32       0          PO2/0      point2point  
17     Pop tag     10.13.0.0/24      0          PO2/0      point2point  
18     Untagged    l2ckt(5)          2244       MF2        point2point  
19     Untagged    l2ckt(6)          510        MF2        point2point 

          
 
		  
          

          

          

          

          

          

          Configuration Examples for Multilink Frame Relay over L2TPv3 AToM
          

           
	 
          

          

          Frame Relay-to-Frame Relay over L2TPv3 on Multilink Frame Relay Interfaces  Example
          

          
      
          
The following example sets up Multilink Frame Relay interfaces to transport Frame Relay data between PE routers:
          

      

          
                
          
PE1
          

                        		

                
          
PE2
          

                        		

          
          

          
                
          configure terminal
ip cef distributed
frame-relay switching
!
interface loopback 0
 ip address 10.8.8.8 255.255.255.255
 no shutdown
!
pseudowire-class fr-xconnect
 encapsulation l2tp
 protocol l2tpv3
 ip local interface loopback0
!
controller T3 1/1/1
t1 1 framing esf
t1 1 clock source internal
t1 1 channel-group 1 timeslots 1-24 speed 64
!
t1 2 framing esf
t1 2 clock source inter
t1 2 channel-group 1 timeslots 1-24 speed 64
!
interface mfr 1
 encapsulation frame-relay
 logging event dlci-status-change
 frame-relay intf-type nni
 no shutdown
!
interface Serial1/1/1/1:1
  encapsulation frame-relay mfr1
interface Serial1/1/1/2:1
  encapsulation frame-relay mfr1
!
interface POS4/1/0
 clock source internal
 ip address 10.13.0.0 255.255.255.0
 no shutdown
 no fair-queue
!
connect fr-fr mfr1 206 l2
 xconnect 10.9.9.9 6 pw-class fr-xconnect
!
router ospf 10
 network 10.13.0.0 0.0.0.0 area 0
 network 10.8.8.8 0.0.0.0 area 0
end
          

              
          
          		

          
                
          configure terminal
ip routing
ip cef
frame-relay switching
!
interface loopback 0
 ip address 10.9.9.9 255.255.255.255 
 no shutdown
!
interface p2/0
 clock source internal
 ip address 10.14.0.2 255.255.255.0
 no shutdown
 no fair-queue
!
controller T3 3/1
t1 1 framing esf
t1 1 clock source internal
t1 1 channel-group 1 timeslots 1-24 speed 64
!
t1 2 framing esf
t1 2 clock source internal
t1 2 channel-group 1 timeslots 1-24 speed 64
!
interface mfr2
 encapsulation frame-relay
 logging event dlci-status-change
 frame-relay intf-type dce
 no shutdown
!
interface serial3/1/1:1
 encapsulation frame-relay mfr2
!
interface s3/1/2:1
 encapsulation frame-relay mfr2
!
pseudowire-class fr-xconnect
 encapsulation l2tpv3
 protocol l2tpv3
 ip local interface loopback0
!
connect fr-fr mfr2 306 l2transport
 xconnect 10.8.8.8 6 pw-class fr-xconnect
!
router ospf 10
 network 10.14.0.2 0.0.0.0 area 0
 network 10.9.9.9 0.0.0.0 area 0
end
          

              
          
          		

          
          

          

          

    
          

          

          

          Frame Relay-to-Ethernet VLAN Interworking over L2TPv3 on Multilink Frame Relay Interfaces  Example
          

          
      
          
The following example sets up Multilink Frame Relay interfaces to perform Frame Relay-to-Ethernet VLAN interworking between PE routers. The example uses IP interworking, also referred to as routed interworking.      
          

      

          
                
          
PE1
          

                        		

                
          
PE2
          

                        		

          
          

          
                
          configure terminal
ip cef distributed
frame-relay switching
!
!
interface loopback 0
 ip address 10.8.8.8 255.255.255.255
 no shutdown
!
pseudowire-class ip
 encapsulation l2tp
 interworking ip
 ip local interface loopback0
!
interface mfr 1
 encapsulation frame-relay
 logging event dlci-status-change
 no shutdown
 frame-relay intf-type nni
!
interface Serial1/1/1/1:1
  encapsulation frame-relay mfr1
interface Serial1/1/1/2:1
  encapsulation frame-relay mfr1
!
interface POS4/1/0
 clock source internal
 ip address 13.0.0.2 255.255.255.0
 no shutdown
 no fair-queue
!
connect fr-vlan mfr1 206 l2
 xconnect 9.9.9.913.0.0.2 6 pw-class ip
!
router ospf 10
 network 10.13.0.2 0.0.0.0 area 0
 network 10.8.8.8 0.0.0.0 area 0
end
          

              
          
          		

          
                
          configure terminal
ip routing
ip cef
frame-relay switching
!
interface loopback 0
 ip address 10.9.9.9 255.255.255.255
 no shutdown
!
pseudowire-class ip
 encapsulation l2tp
 interworking ip
 ip local interface loopback0
!
interface p2/0
 clock source internal
 ip address 10.14.0.2 255.255.255.0
 no shutdown
 no fair-queue
!
interface FastEthernet0/1
  no shutdown 
!
interface FastEthernet0/1.6
 encapsulation dot1Q 6
 xconnect 10.8.8.8 6 pw-class ip
 no shutdown
!
router ospf 10
 network 10.14.0.2 0.0.0.0 area 0
 network 10.9.9.9 0.0.0.0 area 0
!
end
          

              
          
          		

          
          

          

          

    
          

          

          

          Frame Relay-to-Ethernet Interworking over MPLS on Multilink Frame Relay Interfaces  Example
          

          
      
          
The following example sets up Multilink Frame Relay interfaces to perform Frame Relay-to-Ethernet interworking between PE routers. The example uses IP interworking, also referred to as routed interworking.    
          

      

          
                
          
PE1
          

                        		

                
          
PE2
          

                        		

          
          

          
                
          configure terminal
ip cef distributed
frame-relay switching
!
!
interface loopback 0
 ip address 10.8.8.8 255.255.255.255
 no shutdown
!
interface mfr 1
 encapsulation frame-relay
 logging event dlci-status-change
 no shutdown
 frame-relay intf-type nni
!
interface Serial1/1/1/1:1
  encapsulation frame-relay mfr1
interface Serial1/1/1/2:1
  encapsulation frame-relay mfr2
!
interface POS4/1/0
 clock source internal
 ip address 10.13.0.2 255.255.255.0
 no shutdown
 mpls ip 
!
router ospf 10
 network 10.13.0.2 0.0.0.0 area 0
 network 10.8.8.8 0.0.0.0 area 0
!
mpls label protocol ldp
mpls ldp router-id loopback0
mpls ip
!
pseudowire-class atom
 encapsulation mpls
 interworking ip
!
connect fr-eth mfr1 207 l2
 xconnect 10.9.9.9 7 pw-class atom
!
end
          

              
          
          		

          
                
          configure terminal
ip routing
ip cef
frame-relay switching
!
interface loopback 0
 ip address 10.9.9.9 255.255.255.255
 no shutdown
!
interface POS2/0
 clock source internal
 ip address 10.14.0.2 255.255.255.0
 no shutdown
 no fair-queue
 mpls ip 
!
router ospf 10
 network 10.14.0.2 0.0.0.0 area 0
 network 10.9.9.9 0.0.0.0 area 0
!
mpls label protocol ldp
mpls ldp router-id loopback0
mpls ip
!
pseudowire-class atom
 encapsulation mpls
 interworking ip
!
interface FastEthernet0/1
 xconnect 10.8.8.8 7 pw-class atom
 no shutdown
!
end
          

              
          
          		

          
          

          

          

    
          

          

          

          MQC Color-Aware Policing  Example
          

          
      

          Note
          
Quality of Service features are not supported in Cisco IOS Release 12.4(11)T. 
          

          

      
          
The following example configures a VC input policy with a color-aware, two-rate, three-color policing method using a DE bit as input color and setting the tunnel Differentiated Services Code Point (DSCP) based on color. Packets in excess of peak rates are discarded.
          

      
          class-map not-fr-de
match not fr-de
!
policy-map police
class class-default
police cir 64000 pir 256000
conform-color not-fr-de
conform-action set-dscp-tunnel-transmit  af31
exceed-action set-dscp-tunnel-transmit af32
violate-action drop
!
interface MFR1
frame-relay interface-dlci 206 switched
class police
!
connect fr-vlan mfr1 206 l2
xconnect 10.9.9.9 6 pw-class ip
!
map-class frame-relay police
service-policy input police
          

    
          

          

          

          DE Bit Matching  Example
          

          
      

          Note
          
Quality of Service features are not supported in Cisco IOS Release 12.4(11)T. 
          

          

      
          
The following example shows the configuration of an interface input policy matching on the DE bit to set the tunnel DSCP:
          

      
          class-map de
 match fr-de
!
policy-map de
 class de
  set ip dscp tunnel af32
 class class-default
  set ip dscp tunnel af31
!
interface MFR1
 service-policy input de
          

    
          

          

          

          DLCI-Based queueing  Example
          

          
      

          Note
          
Quality of Service features are not supported in Cisco IOS Release 12.4(11)T. 
          

          

      
          
The following example shows the configuration of an interface output policy matching on a QoS group based on the DLCI:
          

      
          class-map dlci100
 match fr-dlci 100
class-map dlci200
 match fr-dlci 200
!
policy-map dlci
 class dlci100
  bandwidth percent 10
 class dlci200
  bandwidth percent 20
!
interface MFR1
 service-policy output dlci
          

    
          

          

          

          Discard Class-Based WRED  Example
          

          
      

          Note
          
Quality of Service features are not supported in Cisco IOS Release 12.4(11)T. 
          

          

      
          
The following example shows the configuration of an interface output policy matching on a QoS group based on the tunnel DSCP: 
          

      
          class-map conform
 match ip dscp af31
 match mpls experimental 4
class-map exceed
 match ip dscp af32
 match mpls experimental 3
class-map cos1
 match qos-group 1
!
policy-map core
 class conform
  set qos-group 1
  set discard-class 1
 class exceed
  set qos-group 1
  set discard-class 2
!
policy-map wred
 class cos1
  bandwidth percent 40
  random-detect discard-class-based
  random-detect discard-class 1 20 30 10
  random-detect discard-class 2 1 9 10
!
interface POS1/0
 service-policy input core
!
interface MFR1
 service-policy output wred
          

    
          

          

          

          Aggregate Shaping  Example
          

          
      

          Note
          
Quality of Service features are not supported in Cisco IOS Release 12.4(11)T. 
          

          

      
          
The following example shows the configuration of an interface aggregate shaping policy with a DLCI-based queueing policy:
          

      
          class-map dlci205
match fr-dlci 205
class-map dlci206
match fr-dlci 206
!
policy-map dlci
class dlci205
bandwidth 128
class dlci206
bandwidth 256
!
policy-map shape
class class-default
shape average 512000 2048 2048
service-policy dlci
!
interface MFR1
service-policy output shape
          

    
          

          

          

          VC Shaping  Example
          

          
      

          Note
          
Quality of Service features are not supported in Cisco IOS Release 12.4(11)T. 
          

          

      
          
The following example shows the configuration of a VC output shaping policy with discard class-based WRED: 
          

      
          class-map conform
match mpls experimental 4
class-map exceed
match mpls experimental 3
class-map cos1
match qos-group 1
!
policy-map core
class conform
set qos-group 1
set discard-class 1
class exceed
set qos-group 1
set discard-class 2
!
policy-map vc-wred
class class-default
bandwidth percent 40
random-detect discard-class-based
random-detect discard-class 1 20 30 10
random-detect discard-class 2 1 9 10
!
policy-map shape
class class-default
shape average 512000 2048 2048
service-policy vc-wred
!
interface POS4/1/0
service-policy input core
!
interface MFR1
frame-relay interface-dlci 206 switched
class shape
!
map-class frame-relay shape
service-policy output shape
          

    
          

          

          

          FECN BECN Marking  Example
          

          
      

          Note
          
Quality of Service features are not supported in Cisco IOS Release 12.4(11)T. 
          

          

      
          
The following example shows the configuration of an output policy that configures BECN and FECN bits: 
          

      
          policy-map dlci
 class dlci100
  bandwidth percent 10
 class dlci200
  bandwidth percent 20
  set fr-fecn-becn 1
interface MFR1
 service-policy output dlci
 frame-relay congestion-management
  threshold ecn 20
          

    
          

          

          

          

          Additional References
          

           
		
           The following sections provide references related to the Multilink Frame Relay over L2TPv3/AToM feature.
		
          
 
	 
          

          Related Documents
           
		 
		

           
					 
           Related Topic
					 
          
 
				            		
 
					 
           Document Title
					 
          
 
				            		

          
          

           
					 
           Multilink Frame Relay
					 
          
 
				            		

           
					 
          •  For the Cisco 7500 series routers: 
						
            

            • 

          
 
					  
						Distributed Multilink Frame Relay (FRF.16) 
					  
					 
          •  For the Cisco 7200 series routers:
						
            

            • 

          
 
					  
						Multilink Frame Relay (FRF.16) 
						 
					  
				  
          
          		

          

           
					 
           L2VPN interworking
					 
          
 
				            		
 
					 
           
						L2VPN Interworking 
					 
          
 
				            		

          

           
					 
           Layer 2 Tunneling Protocol, Version 3
					 
          
 
				            		
 
					 
           L2TPV3 
					 
          
 
				            		

          

           
					 
           Layer 2 local switching
					 
          
 
				            		
 
					 
           Layer 2 Local Switching 
					 
          
 
				            		

          
          

          

          
 
	 
          

          Standards 
           
		 
		

           
					 
           Standard
					 
          
 
				            		
 
					 
           Title
					 
          
 
				            		

          
          

           
					 
           draft-martini-l2circuit-trans-mpls-08.txt
					 
          
 
				            		
 
					 
           Transport of Layer 2 Frames Over MPLS 
					 
          
 
				            		

          

           
					 
           draft-martini-l2circuit-encap-mpls-04.txt 
					 
          
 
				            		
 
					 
           Encapsulation Methods for Transport of Layer 2 Frames Over MPLS 
					 
          
 
				            		

          

           
					 
           draft-ietf-l2tpext-l2tp-base-03.txt
					 
          
 
				            		
 
					 
           Layer Two Tunneling Protocol (Version 3) 
					 
          
 
				            		

          
          

          

          
 
	 
          

          MIBs 
           
		 
		

           
					 
           MIB
					 
          
 
				            		
 
					 
           MIBs Link
					 
          
 
				            		

          
          

           
					 
          •  Cisco Frame Relay MIB (CISCO-FRAME-RELAY-MIB.my)
						
            

            • 

          •  Interfaces MIB (IF-MIB.my)
						
            

            • 

          •  MPLS LDP MIB (MPLS-LDP-MIB.my) 
						
            

            • 

          
 
				  
          
          		
 
					 
           To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:
					 
          
 
					 
           
						http:/​/​www.cisco.com/​go/​mibs 
					 
          
 
					 
           
					 
          
 
				            		

          
          

          

          
 
		
           
		
          
 
	 
          

          RFCs 
           
		 
		

           
					 
           RFC
					 
          
 
				            		
 
					 
           Title
					 
          
 
				            		

          
          

           
					 
           RFC 2661
					 
          
 
				            		
 
					 
           
						Layer Two Tunneling Protocol 
						 
					 
          
 
				            		

          
          

          

          
 
	 
          

          Technical Assistance 
           
		 
		

           
					 
           Description
					 
          
 
				            		
 
					 
           Link
					 
          
 
				            		

          
          

           
					 
           The Cisco Technical Support & Documentation website contains thousands of pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools. Registered Cisco.com users can log in from this page to access even more content.
					 
          
 
				            		
 
					 
           
						http:/​/​www.cisco.com/​techsupport 
					 
          
 
				            		

          
          

          

          
 
	 
          

          

          

          Command Reference
          

           The following commands are introduced or modified in the feature or features documented in this module. For information about these commands, see the 
		Cisco IOS Multiprotocol Label Switching Command Reference at http://www.cisco.com/en/US/docs/ios/mpls/command/reference/mp_book.html. For information about all Cisco IOS commands, go to the Command Lookup Tool at 
		http:/​/​tools.cisco.com/​Support/​CLILookup or to the 
		Cisco IOS Master Commands List .
	 
          

          •  
		   
			 xconnect 
		   
		
            

            • 

          

          

          

          Feature Information for Multilink Frame Relay over L2TPv3 AToM
          

           
		
          The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature. 
		
          
 
		
          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. 
		
          
 
	 
          

           
		

          Table 1 Feature Information for Multilink Frame Relay over L2TPv3/AToM 
           
				  
           Feature Name 
				  
          
 
				          		
 
				  
           Releases 
				  
          
 
				          		
 
				  
           Feature Information 
				  
          
 
				          		

          
          

           
				  
           Multilink Frame Relay over L2TPv3/AToM 
				  
          
 
				          		
 
				  
           12.0(28)S 12.2(25)S 12.0(32)S 12.4(11)T 
				  
          
 
				          		
 
				  
           This feature was introduced in Cisco IOS Release 12.0(28)S for the Cisco 7200 and 7500 series routers. 
				  
          
 
				  
           This feature was integrated into Cisco IOS Release 12.2(25)S. 
				  
          
 
				  
           In Cisco IOS Release 12.0(32)S, this feature added support for the following pluggable modules for the Cisco 12000 series router: Cisco 4-port channelized T3 (DSO) shared port adapter, Cisco 8-port channelized T1/E1 shared port adapter, and the Cisco 1-port channelized OC-3/ STM-1 shared port adapter. 
				  
          
 
				  
           This feature was integrated into Cisco IOS Release 12.4(11)T. 
				  
          
 
				          		

          
          

          

          
 
	 
          

          

          

          


          














Multilink Frame Relay over L2TPv3AToM

                              

          


          Contents
          Multilink Frame Relay over L2TPv3AToM
          

           
	 
          

           This feature enables Multilink Frame Relay switching over Layer 2 Tunnel Protocol Version 3 (L2TPv3) and Any Transport over MPLS (AToM). The feature works with like-to-like interfaces and disparate interfaces (L2VPN interworking). 
	 
          

           Multilink Frame Relay is the logical grouping of one or more physical interfaces between two devices of the User-to-Network Interface/Network-to-Network Interface (UNI/NNI) as one single Frame Relay data link. 
	 
          

          

          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 for Configuring Multilink Frame Relay over L2TPv3 AToM
          

           Before configuring Multilink Frame Relay over L2TPv3/AToM, you should understand how to configure Layer 2 virtual private networks (VPNs) and Multilink Frame Relay. See the 
		Additional References for pointers to the feature modules that explain how to configure and use those features. 
	 
          

          

          

          Restrictions for Configuring Multilink Frame Relay over L2TPv3 AToM
          

          • 
Only data-link connection identifier (DLCI)-to-DLCI switching, where each DLCI maps to its own pseudowire, is supported. Port-port mode (also known as HDLC mode), where the entire content of the port, including the Local Management Interface (LMI), is carried across a single pseudowire, is not supported. 
            

            • 

          • 
The following functionality is not supported:
            • 
UNI/NNI or end-to-end fragmentation
              • 

            • 
Nonstop forwarding/stateful switchover 
              • 

            • 
Four-byte DLCIs
              • 

            

            

            • 

          • 
On the Cisco 7500 series routers, all bundle links must reside on the same port adapter (PA) of the Versatile Interface Processor (VIP). Links spreading across PAs are not supported.
            

            • 

          • 
Cisco 7500 series routers support the VIP6-80, VIP4-80, VIP4-50, VIP2-50, CH-STM1, CT3/CE3, CT1/CE1, PA-4T+, and PA-8T port adapters.
            

            • 

          • 
On the Cisco 12000 series routers, Multilink Frame Relay is supported only on the following pluggable modules: Cisco 4-port channelized T3 (DSO) shared port adapter, Cisco 8-port channelized T1/E1 shared port adapter, and the Cisco 1-port channelize OC-3/STM-1shared port adapter.
            

            • 

          

          

          

          Information About Configuring Multilink Frame Relay over L2TPv3 AToM
          

          

          Multilink Frame Relay over L2TPv3 AToM
          

           Multilink Frame Relay over L2TPv3/AToM supports the following functionality:
	 
          

          •  Permanent virtual circuit (PVC) status signaling
		
            

            • 

          •  LMI types cisco, q933a, and ANSI 
		
            

            • 

          •  Sequencing
		
            

            • 

          •  Frame Relay policing (nondistributed)
		
            

            • 

          •  Type of service (ToS) marking for L2TPv3 
		
            

            • 

          

          

          

          Internetworking Support for Multilink Frame Relay
          

          
Interworking support for Multilink Frame Relay interfaces supports the following functionality:
          

          • 
Frame Relay to Ethernet/VLAN (Ethernet and IP interworking)
            

            • 

          • 
Frame Relay to PPP and ATM (IP interworking)
            

            • 

          • 
Cisco and Internet Engineering Task Force (IETF) encapsulation on the customer-edge (CE) router
            

            • 

          • 
Sequencing
            

            • 

          • 
LMI interworking to notify CE routers of PVC status changes 
            

            • 

          

          

          

          Quality of Service Support for Multilink Frame Relay over L2TPv3 AToM
          


          Note
           Quality of Service features are not supported in Cisco IOS Release 12.4(11)T. 
	 
          

          

           L2VPN quality of service (QoS) features supported for Frame Relay are also supported with the Multilink Frame Relay over L2TPv3/AToM feature. You can attach an input service policy to the Multilink Frame Relay interface or individual DLCIs on the interface using the map-class mechanism to police or mark the traffic. You can attach an output policy to the Multilink Frame Relay (MFR) interface to perform class-based queueing, including per-DLCI queueing using the 
		match 
		  fr-dlcicommand. 
	 
          

           The following ingress QoS features are supported with the Multilink Frame Relay over L2TPv3/AToM feature: 
	 
          

          •  Interface input policy matching on the discard eligibility (DE) bit to set Multiprotocol Label Switching (MPLS) EXP or tunnel differentiated services code point (DSCP). 
		
            

            • 

          •  Virtual circuit (VC) input policy configured with a color-aware, two-rate, three-color policer using the DE bit as input color and setting the MPLS EXP bit or tunnel DSCP bit based on color. 
		
            

            • 

          


          Note
           You cannot use the VC-level and interface-level input policies at the same time on the same interface. 
	 
          

          

           The following egress QoS features are supported with the Multilink Frame Relay over L2TPv3/AToM feature: 
	 
          

          •  Egress queueing using tail drop or discard class-based weighted random early detection (WRED). You can use the latter with a core interface input policy to set the discard class based on the MPLS EXP or tunnel DSCP. 
		
            

            • 

          •  Interface output policy matching on QoS group (selected by MPLS EXP or tunnel DSCP). 
		
            

            • 

          •  Interface aggregate shaping policy with queueing policy. 
		
            

            • 

          •  VC output shaping policy with tail drop or discard class-based WRED. 
		
            

            • 

          •  Forward explicit congestion notification (FECN)/backward explicit congestion notification (BECN) marking. 
		
            

            • 

          


          Note
           You cannot use VC-level and interface-level output policies at the same time on the same interface. 
	 
          

          


          Note
           Egress queueing and shaping policies are not supported with Multilink Frame Relay on the Cisco 7200 series routers. 
	 
          

          

          

          

          

          How to Configure Multilink Frame Relay over L2TPv3 AToM
          

          

          Configuring a Multilink Frame Relay Bundle Interface
          

          
      
          
Configure a bundle interface to aggregate bandwidth of multiple member links under a single interface to one virtual pipe. To configure a bundle interface for Multilink Frame Relay, perform the following steps. 
          

    
          
SUMMARY STEPS
            1.   
      
          
            enable
          
        
            

            2.   
      
          
            configure
          
          
            terminal
          
        
            

            3.   
      
          
            interface
          
          
            mfr
          
          
            number
          
          
          
        
            

            4.   
      
          
            frame-relay
            multilink
            bid
          
          
            name
          
        
            


          DETAILED STEPS
             Command or ActionPurpose
            Step 1
          
            enable
          
        
             

            Example:
            
          
            Router> enable
            

        
            
 
                  		 
          
            
Enables privileged EXEC mode. 
            

          
            • 
Enter your password if prompted.
              

              • 

            

         
      
            

            Step 2
          
            configure
          
          
            terminal
          
        
             

            Example:
            
          
            Router# configure terminal
            

        
            
 
                  		 
          
            
Enters global configuration mode.
            

         
      
            

            Step 3
          
            interface
          
          
            mfr
          
          
            number
          
          
          
        
             

            Example:
            
          
            

        
            
 

            Example:
            
          
            Router(config)# interface mfr 1 

            

        
            
 
                  		 
          
            
Configures a multilink Frame Relay bundle interface and enters interface configuration mode. 
            

         
      
            

            Step 4
          
            frame-relay
            multilink
            bid
          
          
            name
          
        
             

            Example:
            
          
            

        
            
 

            Example:
            
          
            Router(config-if)# frame-relay multilink bid int1
            

        
            
 

            Example:
            
          
            

        
            
 
                  		 
          
            
(Optional) Assigns a bundle identification name to a multilink Frame Relay bundle. 
            

          
            Note   
                
              
            
The bundle identification (BID) will not go into effect until the interface has gone from the down state to the up state. One way to bring the interface down and back up again is by using the shutdown and no shutdowncommands in interface configuration mode.
            

            

         
      
            

            

            

            

            Configuring a Multilink Frame Relay Bundle Link Interface
            

            
      
            
Configuring a Multilink Frame Relay bundle link interface allows you to combine bandwidth of multiple lower-speed serial links into a single large pipe and avoid the need of upgrading or purchasing new hardware. To configure a bundle link interface for Multilink Frame Relay, perform the following steps. 
            

    
            
SUMMARY STEPS
              1.   
      
          
            enable
          
        
              

              2.   
      
          
            configure
          
          
            terminal
          
        
              

              3.   
      
          
            interface
          
          
            serial
          
          
            number
          
        
              

              4.   
      
          
            encapsulation
            frame-relay
          
          
            mfr
          
          
            number
           [name]
              

              5.   
      
          
            frame-relay
            multilink
            lid
          
          name
        
              

              6.   
      
          
            frame-relay
            multilink
            hello
          
          
            seconds
          
        
              

              7.   
      
          
            frame-relay
            multilink
            ack
          
          
            seconds
          
        
              

              8.   
      
          
            frame-relay
            multilink
          
          
            retry
          
          
            number
          
        
              


            DETAILED STEPS
               Command or ActionPurpose
              Step 1
          
            enable
          
        
               

              Example:
              
          
              Router> enable
              

        
              
 
                    		 
          
              
Enables privileged EXEC mode. 
              

          
              • 
Enter your password if prompted.
                

                • 

              

         
      
              

              Step 2
          
            configure
          
          
            terminal
          
        
               

              Example:
              
          
              Router# configure terminal
              

        
              
 
                    		 
          
              
Enters global configuration mode.
              

         
      
              

              Step 3
          
            interface
          
          
            serial
          
          
            number
          
        
               

              Example:
              
          
              Router(config)# interface serial 1/1
              

        
              
 
                    		 
          
              
Configures an interface and enters interface configuration mode.
              

         
      
              

              Step 4
          
            encapsulation
            frame-relay
          
          
            mfr
          
          
            number
           [name]
               

              Example:
              
          
              Router(config-if)# encapsulation frame-relay mfr 1
              

        
              
 
                    		 
          
              
Creates a multilink Frame Relay bundle link and associates the link with a bundle.
              

          
              Tip   
                
              
            
              
To minimize latency that results from the arrival order of packets, we recommend bundling physical links of the same line speed in one bundle.
              

          
              

         
      
              

              Step 5
          
            frame-relay
            multilink
            lid
          
          name
        
               

              Example:
              
          
              Router(config-if)#
 
frame-relay multilink lid four
              

        
              
 
                    		 
          
              
(Optional) Assigns a bundle link identification name with a multilink Frame Relay bundle link.
              

          
              Note   
                
              
              
The bundle link identification (LID) will not go into effect until the interface has gone from the down state to the up state. One way to bring the interface down and back up again is by using the shutdown and no shutdown commands in interface configuration mode.
              

              

         
      
              

              Step 6
          
            frame-relay
            multilink
            hello
          
          
            seconds
          
        
               

              Example:
              
          
              Router(config-if)#
 frame-relay multilink hello 
20
              

        
              
 
                    		 
          
              
(Optional) Configures the interval at which a bundle link will send out hello messages. The default value is 10 seconds.
              

         
      
              

              Step 7
          
            frame-relay
            multilink
            ack
          
          
            seconds
          
        
               

              Example:
              
          
              Router(config-if)#
 
frame-relay multilink ack 10
              

        
              
 
                    		 
          
              
(Optional) Configures the number of seconds that a bundle link will wait for a hello message acknowledgment before resending the hello message. The default value is 4 seconds.
              

         
      
              

              Step 8
          
            frame-relay
            multilink
          
          
            retry
          
          
            number
          
        
               

              Example:
              
          
              Router(config-if)#
 
frame-relay multilink retry 5
              

        
              
 
                    		 
          
              
(Optional) Configures the maximum number of times a bundle link will resend a hello message while waiting for an acknowledgment. The default value is 2 tries.
              

         
      
              

              

              

              

              Connecting Frame Relay PVCs Between Routers
              

              
      
              
By connecting Frame Relay PVCs between routers, you can integrate Frame Relay over a Level 2 VPN backbone, which allows you to use your existing Frame Relay network without upgrading. To connect Frame Relay PVCs between routers, perform the following steps. 
              

    
              
SUMMARY STEPS
                1.   
      
          
            enable
          
        
                

                2.   
      
          
            configure
          
          
            terminal
          
        
                

                3.   
      
          
            connect
          
          
            connection-name
          
          
            mfr
          
          
            number
          
          
            dlci
          
          
            l2transport
          
        
                

                4.   
      
          
            xconnect
          
          
            peer-router-id
          
          
            vcid
          
          
            encapsulation
          
          
            mpls
          
        
                


              DETAILED STEPS
                 Command or ActionPurpose
                Step 1
          
            enable
          
        
                 

                Example:
                
          
                Router> enable
                

        
                
 
                      		 
          
                
Enables privileged EXEC mode. 
                

          
                • 
Enter your password if prompted.
                  

                  • 

                

         
      
                

                Step 2
          
            configure
          
          
            terminal
          
        
                 

                Example:
                
          
                Router# configure terminal
                

        
                
 
                      		 
          
                
Enters global configuration mode.
                

         
      
                

                Step 3
          
            connect
          
          
            connection-name
          
          
            mfr
          
          
            number
          
          
            dlci
          
          
            l2transport
          
        
                 

                Example:
                
          
                Router(config)# connect fr1 mfr 1 100 l2transport
                

        
                
 
                      		 
          
                
Defines connections between Frame Relay PVCs.
                

          
                • 
Using the l2transport keyword specifies that the PVC will not be a locally switched PVC, but will be tunneled over the backbone network.
                  

                  • 

                • 
The connection-name argument is a text string that you provide. 
                  

                  • 

                • 
The dlci argument is the DLCI number of the PVC that will be connected.
                  

                  • 

                

          
                
Enters connect configuration submode. 
                

         
      
                

                Step 4
          
            xconnect
          
          
            peer-router-id
          
          
            vcid
          
          
            encapsulation
          
          
            mpls
          
        
                 

                Example:
                
          
                

        
                
 

                Example:
                
          
                

        
                
 

                Example:
                
          
                Router(config-fr-pw-switching)# xconnect 10.0.0.1 123 encapsulation mpls
                

        
                
 
                      		 
          
                
Creates the VC to transport the Layer 2 packets. In a DLCI-to-DLCI connection type, Frame Relay over MPLS uses the xconnect command in connect configuration submode. 
                

         
      
                

                

                

                

                Verifying Multilink Frame Relay over L2TPv3 AToM
                

                 
		
                 To verify the configuration of Multilink Frame Relay, perform the following steps. The tunnel and session should be in the established (est) state.
		
                
 
	 
                
SUMMARY STEPS
                  1.   
       
			  
				show 
				l2tunnel 
			  
		  
                  

                  2.   
       
			  
				show 
				mpls 
				forwarding 
			  
		  
                  


                DETAILED STEPS
                  Step 1  
              
			  
				show 
				l2tunnel 
			  
		  
                    
			 
                   On both PE routers, use the following command to verify the configuration of Multilink Frame Relay over L2TPv3:
			 
                  
 
		   

                  Example:
                   
			 
                  PE1# show l2tunnel
 
 Tunnel and Session Information Total tunnels 1 sessions 1
LocID RemID Remote Name   State  Remote Address  Port  Sessions L2TPclass
35788 41451 FRWI1         est    10.9.9.9         0     1        l2tp_default_cl
LocID      RemID      TunID      Username, Intf/         State 
                                 Vcid, Circuit                                  
8161       54072      35788      6, MF1:206              est   
PE2# show l2tunnel 
 Tunnel and Session Information Total tunnels 1 sessions 1
LocID RemID Remote Name   State  Remote Address  Port  Sessions L2TPclass
41451 35788 FRWI3         est    10.8.8.8         0     1                       
LocID      RemID      TunID      Username, Intf/          State 
                                 Vcid, Circuit                                  
54072      8161       41451      6, Fa0/1.6:6             est

                  
 
		  
                  

                  

                  Step 2  
              
			  
				show 
				mpls 
				forwarding 
			  
		  
                    
			 
                   On both PE routers, use the following command to verify the configuration of Multilink Frame Relay over MPLS: 
			 
                  
 
		   

                  Example:
                   
			 
                  PE1# show mpls forwarding
 
Local  Outgoing    Prefix            Bytes tag  Outgoing   Next Hop    
tag    tag or VC   or Tunnel Id      switched   interface
16     Pop tag     10.0.0.0/24       0          PO4/1/0    point2point  
17     Untagged    l2ckt(5)          0          MF1        point2point  
18     Untagged    l2ckt(6)          0          MF1        point2point  
19     17          10.9.9.9/32       0          PO4/1/0    point2point
PE2# show mpls forwarding
 
Local  Outgoing    Prefix            Bytes tag  Outgoing   Next Hop    
tag    tag or VC   or Tunnel Id      switched   interface              
16     16          10.8.8.8/32       0          PO2/0      point2point  
17     Pop tag     10.13.0.0/24      0          PO2/0      point2point  
18     Untagged    l2ckt(5)          2244       MF2        point2point  
19     Untagged    l2ckt(6)          510        MF2        point2point 

                  
 
		  
                  

                  

                  

                  

                  

                  

                  Configuration Examples for Multilink Frame Relay over L2TPv3 AToM
                  

                   
	 
                  

                  

                  Frame Relay-to-Frame Relay over L2TPv3 on Multilink Frame Relay Interfaces  Example
                  

                  
      
                  
The following example sets up Multilink Frame Relay interfaces to transport Frame Relay data between PE routers:
                  

      

                  
                
                  
PE1
                  

                                		

                
                  
PE2
                  

                                		

                  
                  

                  
                
                  configure terminal
ip cef distributed
frame-relay switching
!
interface loopback 0
 ip address 10.8.8.8 255.255.255.255
 no shutdown
!
pseudowire-class fr-xconnect
 encapsulation l2tp
 protocol l2tpv3
 ip local interface loopback0
!
controller T3 1/1/1
t1 1 framing esf
t1 1 clock source internal
t1 1 channel-group 1 timeslots 1-24 speed 64
!
t1 2 framing esf
t1 2 clock source inter
t1 2 channel-group 1 timeslots 1-24 speed 64
!
interface mfr 1
 encapsulation frame-relay
 logging event dlci-status-change
 frame-relay intf-type nni
 no shutdown
!
interface Serial1/1/1/1:1
  encapsulation frame-relay mfr1
interface Serial1/1/1/2:1
  encapsulation frame-relay mfr1
!
interface POS4/1/0
 clock source internal
 ip address 10.13.0.0 255.255.255.0
 no shutdown
 no fair-queue
!
connect fr-fr mfr1 206 l2
 xconnect 10.9.9.9 6 pw-class fr-xconnect
!
router ospf 10
 network 10.13.0.0 0.0.0.0 area 0
 network 10.8.8.8 0.0.0.0 area 0
end
                  

              
                  
                  		

                  
                
                  configure terminal
ip routing
ip cef
frame-relay switching
!
interface loopback 0
 ip address 10.9.9.9 255.255.255.255 
 no shutdown
!
interface p2/0
 clock source internal
 ip address 10.14.0.2 255.255.255.0
 no shutdown
 no fair-queue
!
controller T3 3/1
t1 1 framing esf
t1 1 clock source internal
t1 1 channel-group 1 timeslots 1-24 speed 64
!
t1 2 framing esf
t1 2 clock source internal
t1 2 channel-group 1 timeslots 1-24 speed 64
!
interface mfr2
 encapsulation frame-relay
 logging event dlci-status-change
 frame-relay intf-type dce
 no shutdown
!
interface serial3/1/1:1
 encapsulation frame-relay mfr2
!
interface s3/1/2:1
 encapsulation frame-relay mfr2
!
pseudowire-class fr-xconnect
 encapsulation l2tpv3
 protocol l2tpv3
 ip local interface loopback0
!
connect fr-fr mfr2 306 l2transport
 xconnect 10.8.8.8 6 pw-class fr-xconnect
!
router ospf 10
 network 10.14.0.2 0.0.0.0 area 0
 network 10.9.9.9 0.0.0.0 area 0
end
                  

              
                  
                  		

                  
                  

                  

                  

    
                  

                  

                  

                  Frame Relay-to-Ethernet VLAN Interworking over L2TPv3 on Multilink Frame Relay Interfaces  Example
                  

                  
      
                  
The following example sets up Multilink Frame Relay interfaces to perform Frame Relay-to-Ethernet VLAN interworking between PE routers. The example uses IP interworking, also referred to as routed interworking.      
                  

      

                  
                
                  
PE1
                  

                                		

                
                  
PE2
                  

                                		

                  
                  

                  
                
                  configure terminal
ip cef distributed
frame-relay switching
!
!
interface loopback 0
 ip address 10.8.8.8 255.255.255.255
 no shutdown
!
pseudowire-class ip
 encapsulation l2tp
 interworking ip
 ip local interface loopback0
!
interface mfr 1
 encapsulation frame-relay
 logging event dlci-status-change
 no shutdown
 frame-relay intf-type nni
!
interface Serial1/1/1/1:1
  encapsulation frame-relay mfr1
interface Serial1/1/1/2:1
  encapsulation frame-relay mfr1
!
interface POS4/1/0
 clock source internal
 ip address 13.0.0.2 255.255.255.0
 no shutdown
 no fair-queue
!
connect fr-vlan mfr1 206 l2
 xconnect 9.9.9.913.0.0.2 6 pw-class ip
!
router ospf 10
 network 10.13.0.2 0.0.0.0 area 0
 network 10.8.8.8 0.0.0.0 area 0
end
                  

              
                  
                  		

                  
                
                  configure terminal
ip routing
ip cef
frame-relay switching
!
interface loopback 0
 ip address 10.9.9.9 255.255.255.255
 no shutdown
!
pseudowire-class ip
 encapsulation l2tp
 interworking ip
 ip local interface loopback0
!
interface p2/0
 clock source internal
 ip address 10.14.0.2 255.255.255.0
 no shutdown
 no fair-queue
!
interface FastEthernet0/1
  no shutdown 
!
interface FastEthernet0/1.6
 encapsulation dot1Q 6
 xconnect 10.8.8.8 6 pw-class ip
 no shutdown
!
router ospf 10
 network 10.14.0.2 0.0.0.0 area 0
 network 10.9.9.9 0.0.0.0 area 0
!
end
                  

              
                  
                  		

                  
                  

                  

                  

    
                  

                  

                  

                  Frame Relay-to-Ethernet Interworking over MPLS on Multilink Frame Relay Interfaces  Example
                  

                  
      
                  
The following example sets up Multilink Frame Relay interfaces to perform Frame Relay-to-Ethernet interworking between PE routers. The example uses IP interworking, also referred to as routed interworking.    
                  

      

                  
                
                  
PE1
                  

                                		

                
                  
PE2
                  

                                		

                  
                  

                  
                
                  configure terminal
ip cef distributed
frame-relay switching
!
!
interface loopback 0
 ip address 10.8.8.8 255.255.255.255
 no shutdown
!
interface mfr 1
 encapsulation frame-relay
 logging event dlci-status-change
 no shutdown
 frame-relay intf-type nni
!
interface Serial1/1/1/1:1
  encapsulation frame-relay mfr1
interface Serial1/1/1/2:1
  encapsulation frame-relay mfr2
!
interface POS4/1/0
 clock source internal
 ip address 10.13.0.2 255.255.255.0
 no shutdown
 mpls ip 
!
router ospf 10
 network 10.13.0.2 0.0.0.0 area 0
 network 10.8.8.8 0.0.0.0 area 0
!
mpls label protocol ldp
mpls ldp router-id loopback0
mpls ip
!
pseudowire-class atom
 encapsulation mpls
 interworking ip
!
connect fr-eth mfr1 207 l2
 xconnect 10.9.9.9 7 pw-class atom
!
end
                  

              
                  
                  		

                  
                
                  configure terminal
ip routing
ip cef
frame-relay switching
!
interface loopback 0
 ip address 10.9.9.9 255.255.255.255
 no shutdown
!
interface POS2/0
 clock source internal
 ip address 10.14.0.2 255.255.255.0
 no shutdown
 no fair-queue
 mpls ip 
!
router ospf 10
 network 10.14.0.2 0.0.0.0 area 0
 network 10.9.9.9 0.0.0.0 area 0
!
mpls label protocol ldp
mpls ldp router-id loopback0
mpls ip
!
pseudowire-class atom
 encapsulation mpls
 interworking ip
!
interface FastEthernet0/1
 xconnect 10.8.8.8 7 pw-class atom
 no shutdown
!
end
                  

              
                  
                  		

                  
                  

                  

                  

    
                  

                  

                  

                  MQC Color-Aware Policing  Example
                  

                  
      

                  Note
                  
Quality of Service features are not supported in Cisco IOS Release 12.4(11)T. 
                  

                  

      
                  
The following example configures a VC input policy with a color-aware, two-rate, three-color policing method using a DE bit as input color and setting the tunnel Differentiated Services Code Point (DSCP) based on color. Packets in excess of peak rates are discarded.
                  

      
                  class-map not-fr-de
match not fr-de
!
policy-map police
class class-default
police cir 64000 pir 256000
conform-color not-fr-de
conform-action set-dscp-tunnel-transmit  af31
exceed-action set-dscp-tunnel-transmit af32
violate-action drop
!
interface MFR1
frame-relay interface-dlci 206 switched
class police
!
connect fr-vlan mfr1 206 l2
xconnect 10.9.9.9 6 pw-class ip
!
map-class frame-relay police
service-policy input police
                  

    
                  

                  

                  

                  DE Bit Matching  Example
                  

                  
      

                  Note
                  
Quality of Service features are not supported in Cisco IOS Release 12.4(11)T. 
                  

                  

      
                  
The following example shows the configuration of an interface input policy matching on the DE bit to set the tunnel DSCP:
                  

      
                  class-map de
 match fr-de
!
policy-map de
 class de
  set ip dscp tunnel af32
 class class-default
  set ip dscp tunnel af31
!
interface MFR1
 service-policy input de
                  

    
                  

                  

                  

                  DLCI-Based queueing  Example
                  

                  
      

                  Note
                  
Quality of Service features are not supported in Cisco IOS Release 12.4(11)T. 
                  

                  

      
                  
The following example shows the configuration of an interface output policy matching on a QoS group based on the DLCI:
                  

      
                  class-map dlci100
 match fr-dlci 100
class-map dlci200
 match fr-dlci 200
!
policy-map dlci
 class dlci100
  bandwidth percent 10
 class dlci200
  bandwidth percent 20
!
interface MFR1
 service-policy output dlci
                  

    
                  

                  

                  

                  Discard Class-Based WRED  Example
                  

                  
      

                  Note
                  
Quality of Service features are not supported in Cisco IOS Release 12.4(11)T. 
                  

                  

      
                  
The following example shows the configuration of an interface output policy matching on a QoS group based on the tunnel DSCP: 
                  

      
                  class-map conform
 match ip dscp af31
 match mpls experimental 4
class-map exceed
 match ip dscp af32
 match mpls experimental 3
class-map cos1
 match qos-group 1
!
policy-map core
 class conform
  set qos-group 1
  set discard-class 1
 class exceed
  set qos-group 1
  set discard-class 2
!
policy-map wred
 class cos1
  bandwidth percent 40
  random-detect discard-class-based
  random-detect discard-class 1 20 30 10
  random-detect discard-class 2 1 9 10
!
interface POS1/0
 service-policy input core
!
interface MFR1
 service-policy output wred
                  

    
                  

                  

                  

                  Aggregate Shaping  Example
                  

                  
      

                  Note
                  
Quality of Service features are not supported in Cisco IOS Release 12.4(11)T. 
                  

                  

      
                  
The following example shows the configuration of an interface aggregate shaping policy with a DLCI-based queueing policy:
                  

      
                  class-map dlci205
match fr-dlci 205
class-map dlci206
match fr-dlci 206
!
policy-map dlci
class dlci205
bandwidth 128
class dlci206
bandwidth 256
!
policy-map shape
class class-default
shape average 512000 2048 2048
service-policy dlci
!
interface MFR1
service-policy output shape
                  

    
                  

                  

                  

                  VC Shaping  Example
                  

                  
      

                  Note
                  
Quality of Service features are not supported in Cisco IOS Release 12.4(11)T. 
                  

                  

      
                  
The following example shows the configuration of a VC output shaping policy with discard class-based WRED: 
                  

      
                  class-map conform
match mpls experimental 4
class-map exceed
match mpls experimental 3
class-map cos1
match qos-group 1
!
policy-map core
class conform
set qos-group 1
set discard-class 1
class exceed
set qos-group 1
set discard-class 2
!
policy-map vc-wred
class class-default
bandwidth percent 40
random-detect discard-class-based
random-detect discard-class 1 20 30 10
random-detect discard-class 2 1 9 10
!
policy-map shape
class class-default
shape average 512000 2048 2048
service-policy vc-wred
!
interface POS4/1/0
service-policy input core
!
interface MFR1
frame-relay interface-dlci 206 switched
class shape
!
map-class frame-relay shape
service-policy output shape
                  

    
                  

                  

                  

                  FECN BECN Marking  Example
                  

                  
      

                  Note
                  
Quality of Service features are not supported in Cisco IOS Release 12.4(11)T. 
                  

                  

      
                  
The following example shows the configuration of an output policy that configures BECN and FECN bits: 
                  

      
                  policy-map dlci
 class dlci100
  bandwidth percent 10
 class dlci200
  bandwidth percent 20
  set fr-fecn-becn 1
interface MFR1
 service-policy output dlci
 frame-relay congestion-management
  threshold ecn 20
                  

    
                  

                  

                  

                  

                  Additional References
                  

                   
		
                   The following sections provide references related to the Multilink Frame Relay over L2TPv3/AToM feature.
		
                  
 
	 
                  

                  Related Documents
                   
		 
		

                   
					 
                   Related Topic
					 
                  
 
				                    		
 
					 
                   Document Title
					 
                  
 
				                    		

                  
                  

                   
					 
                   Multilink Frame Relay
					 
                  
 
				                    		

                   
					 
                  •  For the Cisco 7500 series routers: 
						
                    

                    • 

                  
 
					  
						Distributed Multilink Frame Relay (FRF.16) 
					  
					 
                  •  For the Cisco 7200 series routers:
						
                    

                    • 

                  
 
					  
						Multilink Frame Relay (FRF.16) 
						 
					  
				  
                  
                  		

                  

                   
					 
                   L2VPN interworking
					 
                  
 
				                    		
 
					 
                   
						L2VPN Interworking 
					 
                  
 
				                    		

                  

                   
					 
                   Layer 2 Tunneling Protocol, Version 3
					 
                  
 
				                    		
 
					 
                   L2TPV3 
					 
                  
 
				                    		

                  

                   
					 
                   Layer 2 local switching
					 
                  
 
				                    		
 
					 
                   Layer 2 Local Switching 
					 
                  
 
				                    		

                  
                  

                  

                  
 
	 
                  

                  Standards 
                   
		 
		

                   
					 
                   Standard
					 
                  
 
				                    		
 
					 
                   Title
					 
                  
 
				                    		

                  
                  

                   
					 
                   draft-martini-l2circuit-trans-mpls-08.txt
					 
                  
 
				                    		
 
					 
                   Transport of Layer 2 Frames Over MPLS 
					 
                  
 
				                    		

                  

                   
					 
                   draft-martini-l2circuit-encap-mpls-04.txt 
					 
                  
 
				                    		
 
					 
                   Encapsulation Methods for Transport of Layer 2 Frames Over MPLS 
					 
                  
 
				                    		

                  

                   
					 
                   draft-ietf-l2tpext-l2tp-base-03.txt
					 
                  
 
				                    		
 
					 
                   Layer Two Tunneling Protocol (Version 3) 
					 
                  
 
				                    		

                  
                  

                  

                  
 
	 
                  

                  MIBs 
                   
		 
		

                   
					 
                   MIB
					 
                  
 
				                    		
 
					 
                   MIBs Link
					 
                  
 
				                    		

                  
                  

                   
					 
                  •  Cisco Frame Relay MIB (CISCO-FRAME-RELAY-MIB.my)
						
                    

                    • 

                  •  Interfaces MIB (IF-MIB.my)
						
                    

                    • 

                  •  MPLS LDP MIB (MPLS-LDP-MIB.my) 
						
                    

                    • 

                  
 
				  
                  
                  		
 
					 
                   To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:
					 
                  
 
					 
                   
						http:/​/​www.cisco.com/​go/​mibs 
					 
                  
 
					 
                   
					 
                  
 
				                    		

                  
                  

                  

                  
 
		
                   
		
                  
 
	 
                  

                  RFCs 
                   
		 
		

                   
					 
                   RFC
					 
                  
 
				                    		
 
					 
                   Title
					 
                  
 
				                    		

                  
                  

                   
					 
                   RFC 2661
					 
                  
 
				                    		
 
					 
                   
						Layer Two Tunneling Protocol 
						 
					 
                  
 
				                    		

                  
                  

                  

                  
 
	 
                  

                  Technical Assistance 
                   
		 
		

                   
					 
                   Description
					 
                  
 
				                    		
 
					 
                   Link
					 
                  
 
				                    		

                  
                  

                   
					 
                   The Cisco Technical Support & Documentation website contains thousands of pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools. Registered Cisco.com users can log in from this page to access even more content.
					 
                  
 
				                    		
 
					 
                   
						http:/​/​www.cisco.com/​techsupport 
					 
                  
 
				                    		

                  
                  

                  

                  
 
	 
                  

                  

                  

                  Command Reference
                  

                   The following commands are introduced or modified in the feature or features documented in this module. For information about these commands, see the 
		Cisco IOS Multiprotocol Label Switching Command Reference at http://www.cisco.com/en/US/docs/ios/mpls/command/reference/mp_book.html. For information about all Cisco IOS commands, go to the Command Lookup Tool at 
		http:/​/​tools.cisco.com/​Support/​CLILookup or to the 
		Cisco IOS Master Commands List .
	 
                  

                  •  
		   
			 xconnect 
		   
		
                    

                    • 

                  

                  

                  

                  Feature Information for Multilink Frame Relay over L2TPv3 AToM
                  

                   
		
                  The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature. 
		
                  
 
		
                  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. 
		
                  
 
	 
                  

                   
		

                  Table 1 Feature Information for Multilink Frame Relay over L2TPv3/AToM 
                   
				  
                   Feature Name 
				  
                  
 
				                  		
 
				  
                   Releases 
				  
                  
 
				                  		
 
				  
                   Feature Information 
				  
                  
 
				                  		

                  
                  

                   
				  
                   Multilink Frame Relay over L2TPv3/AToM 
				  
                  
 
				                  		
 
				  
                   12.0(28)S 12.2(25)S 12.0(32)S 12.4(11)T 
				  
                  
 
				                  		
 
				  
                   This feature was introduced in Cisco IOS Release 12.0(28)S for the Cisco 7200 and 7500 series routers. 
				  
                  
 
				  
                   This feature was integrated into Cisco IOS Release 12.2(25)S. 
				  
                  
 
				  
                   In Cisco IOS Release 12.0(32)S, this feature added support for the following pluggable modules for the Cisco 12000 series router: Cisco 4-port channelized T3 (DSO) shared port adapter, Cisco 8-port channelized T1/E1 shared port adapter, and the Cisco 1-port channelized OC-3/ STM-1 shared port adapter. 
				  
                  
 
				  
                   This feature was integrated into Cisco IOS Release 12.4(11)T.