Contents

MQC-Based Frame Relay Traffic Shaping

The MQC-Based Frame Relay Traffic Shaping feature provides users with the ability to configure Frame Relay traffic shaping (FRTS) using modular quality of service (QoS) command-line interface (CLI) commands. Modular QoS CLI is known as MQC.

This feature is available for the Cisco routers specified in the MQC-Based Frame Relay Traffic Shaping section.

Supported Platforms

Cisco 1700 series, Cisco 2500 series, Cisco 2600 series, Cisco 3620 router, Cisco 3631 router, Cisco 3640 router, Cisco 3660 router, Cisco 3725 router, Cisco 3745 router, Cisco 7200 series, Cisco 7400 series, Cisco 7500 series and above

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 MQC-Based Frame Relay Traffic Shaping

Every permanent virtual circuit (PVC) to which FRTS using MQC is applied must have Frame Relay encapsulation enabled on the associated interface with the encapsulation frame-relay command.


Note

For FRTS using MQC for the routers specified in the Prerequisites for MQC-Based Frame Relay Traffic Shaping section, distributed Cisco Express Forwarding is not required. For FRTS using MQC for routers in the Cisco 7500 and above product range, distributed Cisco Express Forwarding is required.

Restrictions for MQC-Based Frame Relay Traffic Shaping

You must create a default class for the service policy as specified with the class class-default command to configure FRTS using MQC on a Frame Relay PVC. The default class will have all the FRTS parameters applied to it. Refer to the Creating a Policy Map and Entering CBWFQ Parameters for the Class Map section for more information on creating a default class structure for a service policy.

If FRTS and fragmentation are applied to a PVC using MQC, the interface queue will change to dual first-in, first-out (FIFO) queueing. The two queues will consist of a high-priority queue to carry VoIP and certain control packets, and a low-priority queue to carry all other packets.


Note

In configurations created by using traditional FRTS commands, the minimum acceptable outgoing committed information rate (minCIR) will be used as the total available bandwidth for a policy map that has class-based weighted fair queueing (CBWFQ) attached to the map class for the PVC. If the MQC-Based Frame Relay Traffic Shaping feature is used to configure FRTS, the shaping rate that was configured in the parent policy map using MQC will be used as the total available bandwidth for the child policy map, if CBWFQ is configured. If both the shape average and shape adaptive commands are used for traffic shaping, the available bandwidth will be based on the parameters specified by the shape adaptive command

Information About MQC-Based Frame Relay Traffic Shaping

MQC Overview

MQC is used to configure FRTS. MQC is a framework that provides a clear separation between a classification policy and the specification of other parameters that act on the results of that applied classification policy.

Before this feature was introduced in Cisco IOS Release 12.2(13)T, FRTS for the Cisco routers specified in the MQC Overview section could be configured only by using traditional FRTS commands (refer to the How to Configure MQC-Based Frame Relay Traffic Shaping section for more information). With the addition of the MQC-Based Frame Relay Traffic Shaping feature, FRTS can be configured on routers throughout the Cisco router product line by using MQC.

Broadly, MQC is configured and implemented as follows:

  • Define a traffic class with the class-map command.

  • Create a service policy by associating the traffic class with one or more QoS features (using the policy-map command).

  • Attach the service policy to the interface with the service-policy command.

For more detailed information on MQC, refer to the document Modular Quality of Service Command-Line Interface. MQC commands used for FRTS are further explained in the How to Configure MQC-Based Frame Relay Traffic Shaping section of this document.

FRTS Overview

FRTS allows you to control the traffic going out through a PVC in order to match its flow to the speed of the remote target interface and to ensure that the traffic conforms to the parameters that have been set for it. Traffic that matches a particular profile can be shaped to meet downstream requirements, thereby eliminating the bottlenecks that occur in topologies that have data-rate mismatches.

The primary reasons you would use FRTS are the following:

  • To allow high-priority packets to take precedence over other packets as they are encapsulated and forwarded over the Frame Relay network. FRTS is useful for applications such as VoIP and streaming video, which require a low latency to be effective.

  • To control access to available bandwidth.

  • To ensure that traffic conforms to the parameters established for it.

  • To regulate the flow of traffic in order to avoid congestion that can occur when the sent traffic exceeds the access speed of its remote target interface.

  • To eliminate bottlenecks in Frame Relay networks that have high-speed connections at the central site and low-speed connections at branch sites by configuring rate enforcement to limit the rate at which data is sent on the virtual circuit (VC) at the central site. Rate enforcement is a peak rate configured to limit outbound traffic.

Feature Design of MQC-Based Frame Relay Traffic Shaping

The MQC-Based Frame Relay Traffic Shaping feature allows the Cisco routers specified in the Feature Design of MQC-Based Frame Relay Traffic Shaping section to have FRTS configured using MQC instead of traditional FRTS commands.

Before this feature was introduced in Cisco IOS Release 12.2(13)T, FRTS for the Cisco routers specified in the Feature Design of MQC-Based Frame Relay Traffic Shaping section could be configured only by using traditional FRTS commands (for example, the frame-relay traffic-shaping command). For traditional FRTS, all traffic shaping and fragmentation values are entered under the map class. Traffic shaping is defined by entering the map-class frame-relay command, then entering the traffic shaping and, optionally, fragmentation values.

For routers in the Cisco 7500 and above product range, Distributed Traffic Shaping (DTS) is used for traffic shaping. With DTS, the traffic-shaping values are configured by entering the policy-mapcommand, then entering the traffic-shaping values. However, fragmentation values are still entered under the map class--the map-class frame-relay command is still used before any fragmentation values are entered.

The traffic-shaping commands supported by the MQC-Based Frame Relay Traffic Shaping feature are listed in the Supported MQC Frame Relay Traffic Shaping Commands section.

CBWFQ can also be configured under the policy map by entering the policy-mapcommand and then entering the traffic-shaping CBWFQ values.


Note

Configuring traffic shaping using MQC and configuring traffic shaping using traditional FRTS commands are mutually exclusive. Traffic shaping cannot be configured on the same interface using both methods.

Supported MQC Frame Relay Traffic Shaping Commands

The following MQC traffic-shaping commands are supported by the MQC-Based Frame Relay Traffic Shaping feature:

  • shape {average | peak}

  • shape adaptive

  • shape fecn-adapt

  • shape max-buffers

The frame-relay ip rtp priority command is not supported.


Note

Before this feature was introduced in Cisco IOS Release 12.2(13)T, FRTS for the Cisco routers specified in the Supported MQC Frame Relay Traffic Shaping Commands section could be configured only by using traditional FRTS commands (refer to the How to Configure MQC-Based Frame Relay Traffic Shaping section for more information).

Benefits of MQC-Based Frame Relay Traffic Shaping

MQC allows users to specify a traffic class independently of QoS parameters.

The MQC-Based Frame Relay Traffic Shaping feature allows users to apply FRTS parameters using MQC across the entire Cisco router product line.

This feature ensures that FRTS is defined in the same manner for routers across the Cisco router product line, rather than only for routers in the Cisco 7500 and above product range.

Before this feature was introduced in Cisco IOS Release 12.2(13)T, FRTS for the Cisco routers specified in the Benefits of MQC-Based Frame Relay Traffic Shaping section could be defined only by using traditional FRTS commands. Using different methods to define FRTS for different routers can introduce inconsistency and complexity when FRTS is being implemented on different router platforms.

How to Configure MQC-Based Frame Relay Traffic Shaping

Creating a Class Map and Specifying Match Criteria for CBWFQ

To create a class map and specify match criteria for CBWFQ, use the following commands.

SUMMARY STEPS

    1.    enable

    2.    configure terminal

    3.    class-map class-map-name

    4.    match match-criteria

    5.    end


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 class-map class-map-name


    Example:
    Router(config)# class-map voice
     

    Creates a class map to be used for matching packets to a specified class and enters class-map configuration mode.

    • The example command creates a class map named "voice".

     
    Step 4 match match-criteria


    Example:
    Router(config-cmap)# match ip dscp ef
     

    Identifies packets that will belong to the class map.

    • The example command identifies an IP differentiated service code point (DSCP) value of EF (101110) as a match criterion for the class map named "voice".

     
    Step 5 end


    Example:
    Router(config-cmap)# end
     

    (Optional) Exits class-map configuration mode and returns to privileged EXEC mode.

     

    Creating a Policy Map and Entering CBWFQ Parameters for the Class Map

    To create a policy map and enter CBWFQ parameters for the class map, use the following commands.

    SUMMARY STEPS

      1.    enable

      2.    configure terminal

      3.    policy-map policy-map-name

      4.    class name

      5.    priority [bandwidth-kbps | percent percentage] [burst

      6.    end


    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 policy-map policy-map-name


      Example:
      Router(config)# policy-map llq
       

      Creates a policy map that can be attached to one or more interfaces to specify a service policy and enters policy-map configuration mode.

      • The example command creates a policy map named "llq". This policy map will be used for low latency queueing (LLQ).

       
      Step 4 class name


      Example:
      Router(config-pmap)# class voice
       

      Specifies the name of the class whose policy you want to create and enters policy-map class configuration mode.

      • The example command creates a traffic class named "voice".

       
      Step 5 priority [bandwidth-kbps | percent percentage] [burst


      Example:
      Router(config-pmap-c)# priority 32
       

      (Optional) Gives priority to a class of traffic belonging to a policy map.

      • The example command provides a guaranteed allowed bandwidth of 32 kbps and a guaranteed low latency for up to 32 kbps to the traffic class "voice" that was created in Step 4 .

       
      Step 6 end


      Example:
      Router(config-pmap-c)# end
       

      (Optional) Exits policy-map class configuration mode and returns to privileged EXEC mode.

       

      Creating a Shaping Policy Map and Entering FRTS Values for the Default Class Map

      To create a shaping policy map and enter FRTS values for the default class map, use the following commands.

      SUMMARY STEPS

        1.    enable

        2.    configure terminal

        3.    policy-map policy-map-name

        4.    class class-default

        5.    shape {average | peak} {mean-rate [burst-size [excess-burst-size]] | percent percentage [burst-size ms [excess-burst [ms]]]}

        6.    shape adaptive mean-rate-lower-bound

        7.    shape fecn-adapt

        8.    end


      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 policy-map policy-map-name


        Example:
        Router(config)# policy-map shape-policy-map
         

        Creates a policy map that can be attached to one or more interfaces to specify a service policy and enters policy-map configuration mode.

        • The example command creates a policy map named shape-policy-map.

         
        Step 4 class class-default


        Example:
        Router(config-pmap)# class class-default
         

        Specifies the default class (commonly known as the class-default class) before you configure its policy and enters policy-map class configuration mode.

        • The class-default class is the class to which traffic is directed if that traffic does not satisfy the match criteria of other classes whose policy is defined in the policy map.

        • Only one class is defined with this command (the class-default class); therefore, it will match all traffic.

         
        Step 5 shape {average | peak} {mean-rate [burst-size [excess-burst-size]] | percent percentage [burst-size ms [excess-burst [ms]]]}


        Example:
        Router(config-pmap-c)# shape average 64000
         

        Shapes traffic to the indicated bit rate according to the algorithm specified.

        • The example command configures a shape entity with a CIR of 64,000 bytes per second (bps).

        • Any FRTS commands supported by this feature can be used for traffic shaping. Refer to the Restrictions for MQC-Based Frame Relay Traffic Shaping section for a list of supported FRTS commands.

         
        Step 6 shape adaptive mean-rate-lower-bound


        Example:
        Router(config-pmap-c)# shape adaptive 32000
         

        (Optional) Configures a Frame Relay PVC to estimate the available bandwidth by backward explicit congestion notification (BECN) integration while traffic shaping is enabled.

        • The example command sets the lower bound CIR to 32,000 bps when BECNs are received.

         
        Step 7 shape fecn-adapt


        Example:
        Router(config-pmap-c)# shape fecn-adapt
         

        (Optional) Configures a Frame Relay interface to reflect received forward explicit congestion notification (FECN) bits as BECN bits in Q.922 "Test Response" messages.

        • The example command adapts the Frame Relay message with FECN to BECN.

         
        Step 8 end


        Example:
        Router(config-pmap-c)# end
         

        (Optional) Exits policy-map class configuration mode and returns to privileged EXEC mode.

         

        Attaching the Class-Based Weighted Fair Queueing Policy Map to the Shaping Policy Map

        To attach the CBWFQ policy map to the shaping policy map, use the following commands.

        SUMMARY STEPS

          1.    enable

          2.    configure terminal

          3.    policy-map policy-map-name

          4.    class class-default

          5.    service-policy policy-map-name

          6.    end


        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 policy-map policy-map-name


          Example:
          Router(config)# policy-map shape-policy-map
           

          Creates a policy map that can be attached to one or more interfaces to specify a service policy and enters policy-map configuration mode.

          • The example command creates a policy map named shape-policy-map.

           
          Step 4 class class-default


          Example:
          Router(config-pmap)# class class-default
           

          Specifies the default class (commonly known as the class-default class) before you configure its policy and enters policy-map class configuration mode.

          • The class-default class is the class to which traffic is directed if that traffic does not satisfy the match criteria of other classes whose policy is defined in the policy map.

          • Only one class is defined with this command (the class-default class); therefore, it will match all traffic.

           
          Step 5 service-policy policy-map-name


          Example:
          Router(config-pmap-c)# service-policy llq
           

          Attaches a service policy as a traffic shaping policy within a policy map.

          • This parent-child service policy association is called a hierarchical service policy.

          • The example command creates a hierarchical service policy with the parent policy map being "shape-policy-map", and the child policy map being "llq".

           
          Step 6 end


          Example:
          Router(config-pmap-c)# end
           

          (Optional) Exits policy-map class configuration mode and returns to privileged EXEC mode.

           

          Specifying a Map Class and Attaching a Service Policy for the PVC

          To specify a map class and attach a service policy for the PVC, use the following commands.

          SUMMARY STEPS

            1.    enable

            2.    configure terminal

            3.    map-class frame-relay map-class-name

            4.    service-policy {input | output} policy-map-name

            5.    end


          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 map-class frame-relay map-class-name


            Example:
            Router
(config)# map-class frame-relay shape-map-class
             

            Specifies a map class to define fragmentation values for both a PVC and a MQC policy map attachment and enters static maps class configuration mode.

            • The example command specifies a map class named shape-map-class.

             
            Step 4 service-policy {input | output} policy-map-name


            Example:
            Router(config-map-class)# service-policy input shape-policy-map
             

            Attaches a service policy for a PVC.

             
            Step 5 end


            Example:
            Router(config-map-class)# end
             

            (Optional) Exits static maps class configuration mode and returns to privileged EXEC mode.

             

            Configuring an Interface or Subinterface for Frame Relay and Associating a Map Class with a PVC

            To configure an interface or subinterface for Frame Relay and associate a map class with a PVC, use the following commands.

            SUMMARY STEPS

              1.    enable

              2.    configure terminal

              3.    interface type number [name-tag]

              4.    encapsulation frame-relay [MFR | ietf]

              5.    exit

              6.    interface type slot / port . subinterface-number [multipoint | point-to-point]

              7.    ip address ip-address mask [secondary]

              8.    frame-relay interface-dlci dlci [ietf | cisco]

              9.    class name

              10.    end


            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 type number [name-tag]


              Example:
              Router(config)# interface serial 0/0
               

              Configures an interface type and enters interface configuration mode.

               
              Step 4 encapsulation frame-relay [MFR | ietf]


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

              Enables Frame Relay encapsulation.

               
              Step 5 exit


              Example:
              Router(config-if)# exit
               

              Exits interface configuration mode and returns to global configuration mode.

               
              Step 6 interface type slot / port . subinterface-number [multipoint | point-to-point]


              Example:
              Router(config)# interface serial 0/0.1 point-to-point
               

              Configures a subinterface and enters subinterface configuration mode.

               
              Step 7 ip address ip-address mask [secondary]


              Example:
              Router(config-subif)# ip address 192.168.1.1 255.255.255.0
               

              Sets the primary IP address and mask for the subinterface.

               
              Step 8 frame-relay interface-dlci dlci [ietf | cisco]


              Example:
              Router(config-subif)# 
frame-relay interface-dlci 100
               

              Assigns a data-link connection identifier (DLCI) to a specified Frame Relay subinterface on the router and enters Frame Relay DLCI configuration mode.

              • The example command creates a PVC with a DLCI number of 100 under serial 0/0.1 subinterface.

               
              Step 9 class name


              Example:
              Router(config-fr-dlci)# class shape-map-class
               

              Associates a map class with the subinterface.

              • The example command associates the map class named shape-map-class with the PVC created in Step 8 .

               
              Step 10 end


              Example:
              Router(config-fr-dlci)# end
               

              (Optional) Exits Frame Relay DLCI configuration mode and returns to privileged EXEC mode.

               

              Defining Fragmentation Parameters for the PVC

              To define fragmentation parameters for the PVC, use the following commands.

              SUMMARY STEPS

                1.    enable

                2.    configure terminal

                3.    map-class frame-relay map-class-name

                4.    frame-relay fragment fragment-size [switched]

                5.    end


              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 map-class frame-relay map-class-name


                Example:
                Router
(config)# map-class frame-relay shape-map-class
                 

                Specifies a map class to define fragmentation parameters for both a PVC and an MQC policy map attachment and enters static map class configuration mode.

                • The example command specifies a map class named shape-map-class.

                 
                Step 4 frame-relay fragment fragment-size [switched]


                Example:
                Router(config-map-class)# frame-relay fragment 80
                 

                (Optional) Enables fragmentation of Frame Relay frames for a Frame Relay map class.

                • The example command specifies that 80 payload bytes from the original Frame Relay frame will go into each fragment.

                 
                Step 5 end


                Example:
                Router(config-map-class)# end
                 

                (Optional) Exits static maps class configuration mode and returns to privileged EXEC mode.

                 

                Adding the Policy Map to the Map Class

                To add the policy map to the map class, use the following commands.

                SUMMARY STEPS

                  1.    enable

                  2.    configure terminal

                  3.    policy-map policy-map-name

                  4.    class class-default

                  5.    service-policy policy-map

                  6.    end


                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 policy-map policy-map-name


                  Example:
                  Router(config)# policy-map shape-policy-map
                   

                  Creates a policy map that can be attached to one or more interfaces to specify a service policy and enters policy-map configuration mode.

                  • The example command creates a policy map named shape-policy-map.

                   
                  Step 4 class class-default


                  Example:
                  Router(config-pmap)# class class-default
                   

                  Specifies the default class (commonly known as the class-default class) before you configure its policy and enters policy-map class configuration mode.

                  • The class-default class is the class to which traffic is directed if that traffic does not satisfy the match criteria of other classes whose policy is defined in the policy map.

                  • Only one class is defined with this command (the class-default class); therefore, it will match all traffic.

                   
                  Step 5 service-policy policy-map


                  Example:
                  Router(config-pmap-c)# service-policy shape-policy-map
                   

                  Adds a policy map to a map class and enters policy-map class configuration mode.

                  • The example command attaches the policy map named shape-policy-map. This command will also attach the policy map shape to any other PVCs that are using the map class.

                   
                  Step 6 end


                  Example:
                  Router(config-pmap-c)# end
                   

                  (Optional) Exits policy-map class configuration mode and returns to privileged EXEC mode.

                   

                  Configuration Examples for MQC-Based Frame Relay Traffic Shaping

                  Example Configuring Class-Based Weighted Fair Queueing

                  The following example provides a sample configuration for Class-Based Weighted Fair Queueing (CBWFQ) with FRTS: 

                  class-map voice
 match ip dscp ef
policy-map llq
 class voice
  priority 32
policy-map shape-policy-map
 class class-default
  shape average 64000
  shape adaptive 32000
  service-policy llq
map-class frame-relay shape-map-class
 
service-policy output shape-policy-map
interface serial 0/0
encapsulation frame-relay
interface serial 0/0.1 point-to-point
ip address 192.168.1.1 255.255.255.0
frame-relay interface-dlci 100
class shape-map-class

                  Example Configuring Class-Based Weighted Fair Queueing with Fragmentation

                  The following example provides a sample configuration for CBWFQ and fragmentation with FRTS. This configuration example is exactly the same as the example shown in the Example Configuring Class-Based Weighted Fair Queueing section, with the addition of the frame-relay fragment command to configure fragmentation. 

                  class-map voice
 match ip dscp ef
policy-map llq
 class voice
  priority 32
policy-map shape-policy-map
 class class-default
  shape average 64000
  shape adaptive 32000
  service-policy llq
map-class frame-relay shape-map-class
 frame-relay fragment 80
 service-policy output shape-policy-map
interface serial 0/0
 encapsulation frame-relay
interface serial 0/0.1 point-to-point
 ip address 192.168.1.1 255.255.255.0
 frame-relay interface-dlci 100
  class shape-map-class

                  Additional References

                  Related Documents

                  Related Topic

                  Document Title

                  Cisco IOS commands

                  Cisco IOS Master Commands List, All Releases

                  WAN commands

                  Cisco IOS Wide Area Network Command Reference

                  MQC commands

                  Modular Quality of Service Command-Line Interface

                  Standards

                  Standard

                  Title

                  None

                  --

                  MIBs

                  MIB

                  MIBs Link

                  None

                  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

                  Technical Assistance

                  Description

                  Link

                  The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies.

                  To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds.

                  Access to most tools on the Cisco Support website requires a Cisco.com user ID and password.

                  http:/​/​www.cisco.com/​cisco/​web/​support/​index.html

                  Feature Information for MQC-Based Frame Relay Traffic Shaping

                  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 MQC-Based Frame Relay Traffic Shaping

                  Feature Name

                  Releases

                  Feature Information

                  MQC-Based Frame Relay Traffic Shaping

                  12.2(13)T

                  The MQC-Based Frame Relay Traffic Shaping feature provides users with the ability to configure Frame Relay traffic shaping (FRTS) using modular quality of service (QoS) command-line interface (CLI) commands. Modular QoS CLI is known as MQC.

                  The following commands were introduced or modified: shape adaptive, shape fecn-adapt.

                  MQC-Based Frame Relay Traffic Shaping

                  Contents

                  MQC-Based Frame Relay Traffic Shaping

                  The MQC-Based Frame Relay Traffic Shaping feature provides users with the ability to configure Frame Relay traffic shaping (FRTS) using modular quality of service (QoS) command-line interface (CLI) commands. Modular QoS CLI is known as MQC.

                  This feature is available for the Cisco routers specified in the MQC-Based Frame Relay Traffic Shaping section.

                  Supported Platforms

                  Cisco 1700 series, Cisco 2500 series, Cisco 2600 series, Cisco 3620 router, Cisco 3631 router, Cisco 3640 router, Cisco 3660 router, Cisco 3725 router, Cisco 3745 router, Cisco 7200 series, Cisco 7400 series, Cisco 7500 series and above

                  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 MQC-Based Frame Relay Traffic Shaping

                  Every permanent virtual circuit (PVC) to which FRTS using MQC is applied must have Frame Relay encapsulation enabled on the associated interface with the encapsulation frame-relay command.


                  Note

                  For FRTS using MQC for the routers specified in the Prerequisites for MQC-Based Frame Relay Traffic Shaping section, distributed Cisco Express Forwarding is not required. For FRTS using MQC for routers in the Cisco 7500 and above product range, distributed Cisco Express Forwarding is required.

                  Restrictions for MQC-Based Frame Relay Traffic Shaping

                  You must create a default class for the service policy as specified with the class class-default command to configure FRTS using MQC on a Frame Relay PVC. The default class will have all the FRTS parameters applied to it. Refer to the Creating a Policy Map and Entering CBWFQ Parameters for the Class Map section for more information on creating a default class structure for a service policy.

                  If FRTS and fragmentation are applied to a PVC using MQC, the interface queue will change to dual first-in, first-out (FIFO) queueing. The two queues will consist of a high-priority queue to carry VoIP and certain control packets, and a low-priority queue to carry all other packets.


                  Note

                  In configurations created by using traditional FRTS commands, the minimum acceptable outgoing committed information rate (minCIR) will be used as the total available bandwidth for a policy map that has class-based weighted fair queueing (CBWFQ) attached to the map class for the PVC. If the MQC-Based Frame Relay Traffic Shaping feature is used to configure FRTS, the shaping rate that was configured in the parent policy map using MQC will be used as the total available bandwidth for the child policy map, if CBWFQ is configured. If both the shape average and shape adaptive commands are used for traffic shaping, the available bandwidth will be based on the parameters specified by the shape adaptive command

                  Information About MQC-Based Frame Relay Traffic Shaping

                  MQC Overview

                  MQC is used to configure FRTS. MQC is a framework that provides a clear separation between a classification policy and the specification of other parameters that act on the results of that applied classification policy.

                  Before this feature was introduced in Cisco IOS Release 12.2(13)T, FRTS for the Cisco routers specified in the MQC Overview section could be configured only by using traditional FRTS commands (refer to the How to Configure MQC-Based Frame Relay Traffic Shaping section for more information). With the addition of the MQC-Based Frame Relay Traffic Shaping feature, FRTS can be configured on routers throughout the Cisco router product line by using MQC.

                  Broadly, MQC is configured and implemented as follows:

                  • Define a traffic class with the class-map command.

                  • Create a service policy by associating the traffic class with one or more QoS features (using the policy-map command).

                  • Attach the service policy to the interface with the service-policy command.

                  For more detailed information on MQC, refer to the document Modular Quality of Service Command-Line Interface. MQC commands used for FRTS are further explained in the How to Configure MQC-Based Frame Relay Traffic Shaping section of this document.

                  FRTS Overview

                  FRTS allows you to control the traffic going out through a PVC in order to match its flow to the speed of the remote target interface and to ensure that the traffic conforms to the parameters that have been set for it. Traffic that matches a particular profile can be shaped to meet downstream requirements, thereby eliminating the bottlenecks that occur in topologies that have data-rate mismatches.

                  The primary reasons you would use FRTS are the following:

                  • To allow high-priority packets to take precedence over other packets as they are encapsulated and forwarded over the Frame Relay network. FRTS is useful for applications such as VoIP and streaming video, which require a low latency to be effective.

                  • To control access to available bandwidth.

                  • To ensure that traffic conforms to the parameters established for it.

                  • To regulate the flow of traffic in order to avoid congestion that can occur when the sent traffic exceeds the access speed of its remote target interface.

                  • To eliminate bottlenecks in Frame Relay networks that have high-speed connections at the central site and low-speed connections at branch sites by configuring rate enforcement to limit the rate at which data is sent on the virtual circuit (VC) at the central site. Rate enforcement is a peak rate configured to limit outbound traffic.

                  Feature Design of MQC-Based Frame Relay Traffic Shaping

                  The MQC-Based Frame Relay Traffic Shaping feature allows the Cisco routers specified in the Feature Design of MQC-Based Frame Relay Traffic Shaping section to have FRTS configured using MQC instead of traditional FRTS commands.

                  Before this feature was introduced in Cisco IOS Release 12.2(13)T, FRTS for the Cisco routers specified in the Feature Design of MQC-Based Frame Relay Traffic Shaping section could be configured only by using traditional FRTS commands (for example, the frame-relay traffic-shaping command). For traditional FRTS, all traffic shaping and fragmentation values are entered under the map class. Traffic shaping is defined by entering the map-class frame-relay command, then entering the traffic shaping and, optionally, fragmentation values.

                  For routers in the Cisco 7500 and above product range, Distributed Traffic Shaping (DTS) is used for traffic shaping. With DTS, the traffic-shaping values are configured by entering the policy-mapcommand, then entering the traffic-shaping values. However, fragmentation values are still entered under the map class--the map-class frame-relay command is still used before any fragmentation values are entered.

                  The traffic-shaping commands supported by the MQC-Based Frame Relay Traffic Shaping feature are listed in the Supported MQC Frame Relay Traffic Shaping Commands section.

                  CBWFQ can also be configured under the policy map by entering the policy-mapcommand and then entering the traffic-shaping CBWFQ values.


                  Note

                  Configuring traffic shaping using MQC and configuring traffic shaping using traditional FRTS commands are mutually exclusive. Traffic shaping cannot be configured on the same interface using both methods.

                  Supported MQC Frame Relay Traffic Shaping Commands

                  The following MQC traffic-shaping commands are supported by the MQC-Based Frame Relay Traffic Shaping feature:

                  • shape {average | peak}

                  • shape adaptive

                  • shape fecn-adapt

                  • shape max-buffers

                  The frame-relay ip rtp priority command is not supported.


                  Note

                  Before this feature was introduced in Cisco IOS Release 12.2(13)T, FRTS for the Cisco routers specified in the Supported MQC Frame Relay Traffic Shaping Commands section could be configured only by using traditional FRTS commands (refer to the How to Configure MQC-Based Frame Relay Traffic Shaping section for more information).

                  Benefits of MQC-Based Frame Relay Traffic Shaping

                  MQC allows users to specify a traffic class independently of QoS parameters.

                  The MQC-Based Frame Relay Traffic Shaping feature allows users to apply FRTS parameters using MQC across the entire Cisco router product line.

                  This feature ensures that FRTS is defined in the same manner for routers across the Cisco router product line, rather than only for routers in the Cisco 7500 and above product range.

                  Before this feature was introduced in Cisco IOS Release 12.2(13)T, FRTS for the Cisco routers specified in the Benefits of MQC-Based Frame Relay Traffic Shaping section could be defined only by using traditional FRTS commands. Using different methods to define FRTS for different routers can introduce inconsistency and complexity when FRTS is being implemented on different router platforms.

                  How to Configure MQC-Based Frame Relay Traffic Shaping

                  Creating a Class Map and Specifying Match Criteria for CBWFQ

                  To create a class map and specify match criteria for CBWFQ, use the following commands.

                  SUMMARY STEPS

                    1.    enable

                    2.    configure terminal

                    3.    class-map class-map-name

                    4.    match match-criteria

                    5.    end


                  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 class-map class-map-name


                    Example:
                    Router(config)# class-map voice
                     

                    Creates a class map to be used for matching packets to a specified class and enters class-map configuration mode.

                    • The example command creates a class map named "voice".

                     
                    Step 4 match match-criteria


                    Example:
                    Router(config-cmap)# match ip dscp ef
                     

                    Identifies packets that will belong to the class map.

                    • The example command identifies an IP differentiated service code point (DSCP) value of EF (101110) as a match criterion for the class map named "voice".

                     
                    Step 5 end


                    Example:
                    Router(config-cmap)# end
                     

                    (Optional) Exits class-map configuration mode and returns to privileged EXEC mode.

                     

                    Creating a Policy Map and Entering CBWFQ Parameters for the Class Map

                    To create a policy map and enter CBWFQ parameters for the class map, use the following commands.

                    SUMMARY STEPS

                      1.    enable

                      2.    configure terminal

                      3.    policy-map policy-map-name

                      4.    class name

                      5.    priority [bandwidth-kbps | percent percentage] [burst

                      6.    end


                    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 policy-map policy-map-name


                      Example:
                      Router(config)# policy-map llq
                       

                      Creates a policy map that can be attached to one or more interfaces to specify a service policy and enters policy-map configuration mode.

                      • The example command creates a policy map named "llq". This policy map will be used for low latency queueing (LLQ).

                       
                      Step 4 class name


                      Example:
                      Router(config-pmap)# class voice
                       

                      Specifies the name of the class whose policy you want to create and enters policy-map class configuration mode.

                      • The example command creates a traffic class named "voice".

                       
                      Step 5 priority [bandwidth-kbps | percent percentage] [burst


                      Example:
                      Router(config-pmap-c)# priority 32
                       

                      (Optional) Gives priority to a class of traffic belonging to a policy map.

                      • The example command provides a guaranteed allowed bandwidth of 32 kbps and a guaranteed low latency for up to 32 kbps to the traffic class "voice" that was created in Step 4 .

                       
                      Step 6 end


                      Example:
                      Router(config-pmap-c)# end
                       

                      (Optional) Exits policy-map class configuration mode and returns to privileged EXEC mode.

                       

                      Creating a Shaping Policy Map and Entering FRTS Values for the Default Class Map

                      To create a shaping policy map and enter FRTS values for the default class map, use the following commands.

                      SUMMARY STEPS

                        1.    enable

                        2.    configure terminal

                        3.    policy-map policy-map-name

                        4.    class class-default

                        5.    shape {average | peak} {mean-rate [burst-size [excess-burst-size]] | percent percentage [burst-size ms [excess-burst [ms]]]}

                        6.    shape adaptive mean-rate-lower-bound

                        7.    shape fecn-adapt

                        8.    end


                      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 policy-map policy-map-name


                        Example:
                        Router(config)# policy-map shape-policy-map
                         

                        Creates a policy map that can be attached to one or more interfaces to specify a service policy and enters policy-map configuration mode.

                        • The example command creates a policy map named shape-policy-map.

                         
                        Step 4 class class-default


                        Example:
                        Router(config-pmap)# class class-default
                         

                        Specifies the default class (commonly known as the class-default class) before you configure its policy and enters policy-map class configuration mode.

                        • The class-default class is the class to which traffic is directed if that traffic does not satisfy the match criteria of other classes whose policy is defined in the policy map.

                        • Only one class is defined with this command (the class-default class); therefore, it will match all traffic.

                         
                        Step 5 shape {average | peak} {mean-rate [burst-size [excess-burst-size]] | percent percentage [burst-size ms [excess-burst [ms]]]}


                        Example:
                        Router(config-pmap-c)# shape average 64000
                         

                        Shapes traffic to the indicated bit rate according to the algorithm specified.

                        • The example command configures a shape entity with a CIR of 64,000 bytes per second (bps).

                        • Any FRTS commands supported by this feature can be used for traffic shaping. Refer to the Restrictions for MQC-Based Frame Relay Traffic Shaping section for a list of supported FRTS commands.

                         
                        Step 6 shape adaptive mean-rate-lower-bound


                        Example:
                        Router(config-pmap-c)# shape adaptive 32000
                         

                        (Optional) Configures a Frame Relay PVC to estimate the available bandwidth by backward explicit congestion notification (BECN) integration while traffic shaping is enabled.

                        • The example command sets the lower bound CIR to 32,000 bps when BECNs are received.

                         
                        Step 7 shape fecn-adapt


                        Example:
                        Router(config-pmap-c)# shape fecn-adapt
                         

                        (Optional) Configures a Frame Relay interface to reflect received forward explicit congestion notification (FECN) bits as BECN bits in Q.922 "Test Response" messages.

                        • The example command adapts the Frame Relay message with FECN to BECN.

                         
                        Step 8 end


                        Example:
                        Router(config-pmap-c)# end
                         

                        (Optional) Exits policy-map class configuration mode and returns to privileged EXEC mode.

                         

                        Attaching the Class-Based Weighted Fair Queueing Policy Map to the Shaping Policy Map

                        To attach the CBWFQ policy map to the shaping policy map, use the following commands.

                        SUMMARY STEPS

                          1.    enable

                          2.    configure terminal

                          3.    policy-map policy-map-name

                          4.    class class-default

                          5.    service-policy policy-map-name

                          6.    end


                        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 policy-map policy-map-name


                          Example:
                          Router(config)# policy-map shape-policy-map
                           

                          Creates a policy map that can be attached to one or more interfaces to specify a service policy and enters policy-map configuration mode.

                          • The example command creates a policy map named shape-policy-map.

                           
                          Step 4 class class-default


                          Example:
                          Router(config-pmap)# class class-default
                           

                          Specifies the default class (commonly known as the class-default class) before you configure its policy and enters policy-map class configuration mode.

                          • The class-default class is the class to which traffic is directed if that traffic does not satisfy the match criteria of other classes whose policy is defined in the policy map.

                          • Only one class is defined with this command (the class-default class); therefore, it will match all traffic.

                           
                          Step 5 service-policy policy-map-name


                          Example:
                          Router(config-pmap-c)# service-policy llq
                           

                          Attaches a service policy as a traffic shaping policy within a policy map.

                          • This parent-child service policy association is called a hierarchical service policy.

                          • The example command creates a hierarchical service policy with the parent policy map being "shape-policy-map", and the child policy map being "llq".

                           
                          Step 6 end


                          Example:
                          Router(config-pmap-c)# end
                           

                          (Optional) Exits policy-map class configuration mode and returns to privileged EXEC mode.

                           

                          Specifying a Map Class and Attaching a Service Policy for the PVC

                          To specify a map class and attach a service policy for the PVC, use the following commands.

                          SUMMARY STEPS

                            1.    enable

                            2.    configure terminal

                            3.    map-class frame-relay map-class-name

                            4.    service-policy {input | output} policy-map-name

                            5.    end


                          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 map-class frame-relay map-class-name


                            Example:
                            Router
(config)# map-class frame-relay shape-map-class
                             

                            Specifies a map class to define fragmentation values for both a PVC and a MQC policy map attachment and enters static maps class configuration mode.

                            • The example command specifies a map class named shape-map-class.

                             
                            Step 4 service-policy {input | output} policy-map-name


                            Example:
                            Router(config-map-class)# service-policy input shape-policy-map
                             

                            Attaches a service policy for a PVC.

                             
                            Step 5 end


                            Example:
                            Router(config-map-class)# end
                             

                            (Optional) Exits static maps class configuration mode and returns to privileged EXEC mode.

                             

                            Configuring an Interface or Subinterface for Frame Relay and Associating a Map Class with a PVC

                            To configure an interface or subinterface for Frame Relay and associate a map class with a PVC, use the following commands.

                            SUMMARY STEPS

                              1.    enable

                              2.    configure terminal

                              3.    interface type number [name-tag]

                              4.    encapsulation frame-relay [MFR | ietf]

                              5.    exit

                              6.    interface type slot / port . subinterface-number [multipoint | point-to-point]

                              7.    ip address ip-address mask [secondary]

                              8.    frame-relay interface-dlci dlci [ietf | cisco]

                              9.    class name

                              10.    end


                            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 type number [name-tag]


                              Example:
                              Router(config)# interface serial 0/0
                               

                              Configures an interface type and enters interface configuration mode.

                               
                              Step 4 encapsulation frame-relay [MFR | ietf]


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

                              Enables Frame Relay encapsulation.

                               
                              Step 5 exit


                              Example:
                              Router(config-if)# exit
                               

                              Exits interface configuration mode and returns to global configuration mode.

                               
                              Step 6 interface type slot / port . subinterface-number [multipoint | point-to-point]


                              Example:
                              Router(config)# interface serial 0/0.1 point-to-point
                               

                              Configures a subinterface and enters subinterface configuration mode.

                               
                              Step 7 ip address ip-address mask [secondary]


                              Example:
                              Router(config-subif)# ip address 192.168.1.1 255.255.255.0
                               

                              Sets the primary IP address and mask for the subinterface.

                               
                              Step 8 frame-relay interface-dlci dlci [ietf | cisco]


                              Example:
                              Router(config-subif)# 
frame-relay interface-dlci 100
                               

                              Assigns a data-link connection identifier (DLCI) to a specified Frame Relay subinterface on the router and enters Frame Relay DLCI configuration mode.

                              • The example command creates a PVC with a DLCI number of 100 under serial 0/0.1 subinterface.

                               
                              Step 9 class name


                              Example:
                              Router(config-fr-dlci)# class shape-map-class
                               

                              Associates a map class with the subinterface.

                              • The example command associates the map class named shape-map-class with the PVC created in Step 8 .

                               
                              Step 10 end


                              Example:
                              Router(config-fr-dlci)# end
                               

                              (Optional) Exits Frame Relay DLCI configuration mode and returns to privileged EXEC mode.

                               

                              Defining Fragmentation Parameters for the PVC

                              To define fragmentation parameters for the PVC, use the following commands.

                              SUMMARY STEPS

                                1.    enable

                                2.    configure terminal

                                3.    map-class frame-relay map-class-name

                                4.    frame-relay fragment fragment-size [switched]

                                5.    end


                              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 map-class frame-relay map-class-name


                                Example:
                                Router
(config)# map-class frame-relay shape-map-class
                                 

                                Specifies a map class to define fragmentation parameters for both a PVC and an MQC policy map attachment and enters static map class configuration mode.

                                • The example command specifies a map class named shape-map-class.

                                 
                                Step 4 frame-relay fragment fragment-size [switched]


                                Example:
                                Router(config-map-class)# frame-relay fragment 80
                                 

                                (Optional) Enables fragmentation of Frame Relay frames for a Frame Relay map class.

                                • The example command specifies that 80 payload bytes from the original Frame Relay frame will go into each fragment.

                                 
                                Step 5 end


                                Example:
                                Router(config-map-class)# end
                                 

                                (Optional) Exits static maps class configuration mode and returns to privileged EXEC mode.

                                 

                                Adding the Policy Map to the Map Class

                                To add the policy map to the map class, use the following commands.

                                SUMMARY STEPS

                                  1.    enable

                                  2.    configure terminal

                                  3.    policy-map policy-map-name

                                  4.    class class-default

                                  5.    service-policy policy-map

                                  6.    end


                                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 policy-map policy-map-name


                                  Example:
                                  Router(config)# policy-map shape-policy-map
                                   

                                  Creates a policy map that can be attached to one or more interfaces to specify a service policy and enters policy-map configuration mode.

                                  • The example command creates a policy map named shape-policy-map.

                                   
                                  Step 4 class class-default


                                  Example:
                                  Router(config-pmap)# class class-default
                                   

                                  Specifies the default class (commonly known as the class-default class) before you configure its policy and enters policy-map class configuration mode.

                                  • The class-default class is the class to which traffic is directed if that traffic does not satisfy the match criteria of other classes whose policy is defined in the policy map.

                                  • Only one class is defined with this command (the class-default class); therefore, it will match all traffic.

                                   
                                  Step 5 service-policy policy-map


                                  Example:
                                  Router(config-pmap-c)# service-policy shape-policy-map
                                   

                                  Adds a policy map to a map class and enters policy-map class configuration mode.

                                  • The example command attaches the policy map named shape-policy-map. This command will also attach the policy map shape to any other PVCs that are using the map class.

                                   
                                  Step 6 end


                                  Example:
                                  Router(config-pmap-c)# end
                                   

                                  (Optional) Exits policy-map class configuration mode and returns to privileged EXEC mode.

                                   

                                  Configuration Examples for MQC-Based Frame Relay Traffic Shaping

                                  Example Configuring Class-Based Weighted Fair Queueing

                                  The following example provides a sample configuration for Class-Based Weighted Fair Queueing (CBWFQ) with FRTS: 

                                  class-map voice
 match ip dscp ef
policy-map llq
 class voice
  priority 32
policy-map shape-policy-map
 class class-default
  shape average 64000
  shape adaptive 32000
  service-policy llq
map-class frame-relay shape-map-class
 
service-policy output shape-policy-map
interface serial 0/0
encapsulation frame-relay
interface serial 0/0.1 point-to-point
ip address 192.168.1.1 255.255.255.0
frame-relay interface-dlci 100
class shape-map-class

                                  Example Configuring Class-Based Weighted Fair Queueing with Fragmentation

                                  The following example provides a sample configuration for CBWFQ and fragmentation with FRTS. This configuration example is exactly the same as the example shown in the Example Configuring Class-Based Weighted Fair Queueing section, with the addition of the frame-relay fragment command to configure fragmentation. 

                                  class-map voice
 match ip dscp ef
policy-map llq
 class voice
  priority 32
policy-map shape-policy-map
 class class-default
  shape average 64000
  shape adaptive 32000
  service-policy llq
map-class frame-relay shape-map-class
 frame-relay fragment 80
 service-policy output shape-policy-map
interface serial 0/0
 encapsulation frame-relay
interface serial 0/0.1 point-to-point
 ip address 192.168.1.1 255.255.255.0
 frame-relay interface-dlci 100
  class shape-map-class

                                  Additional References

                                  Related Documents

                                  Related Topic

                                  Document Title

                                  Cisco IOS commands

                                  Cisco IOS Master Commands List, All Releases

                                  WAN commands

                                  Cisco IOS Wide Area Network Command Reference

                                  MQC commands

                                  Modular Quality of Service Command-Line Interface

                                  Standards

                                  Standard

                                  Title

                                  None

                                  --

                                  MIBs

                                  MIB

                                  MIBs Link

                                  None

                                  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

                                  Technical Assistance

                                  Description

                                  Link

                                  The Cisco Support website provides extensive online resources, including documentation and tools for troubleshooting and resolving technical issues with Cisco products and technologies.

                                  To receive security and technical information about your products, you can subscribe to various services, such as the Product Alert Tool (accessed from Field Notices), the Cisco Technical Services Newsletter, and Really Simple Syndication (RSS) Feeds.

                                  Access to most tools on the Cisco Support website requires a Cisco.com user ID and password.

                                  http:/​/​www.cisco.com/​cisco/​web/​support/​index.html

                                  Feature Information for MQC-Based Frame Relay Traffic Shaping

                                  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 MQC-Based Frame Relay Traffic Shaping

                                  Feature Name

                                  Releases

                                  Feature Information

                                  MQC-Based Frame Relay Traffic Shaping

                                  12.2(13)T

                                  The MQC-Based Frame Relay Traffic Shaping feature provides users with the ability to configure Frame Relay traffic shaping (FRTS) using modular quality of service (QoS) command-line interface (CLI) commands. Modular QoS CLI is known as MQC.

                                  The following commands were introduced or modified: shape adaptive, shape fecn-adapt.