Configuring IP SLAs Metro-Ethernet 3.0 (ITU-T Y.1731) Operations

This module describes how to configure an IP SLAs Metro-Ethernet 3.0 (ITU-T Y.1731) operation to gather the following performance measurements for Ethernet service:

  • Ethernet Delay

  • Ethernet Delay Variation

  • Ethernet Frame Loss Ratio

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.

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 ITU-T Y.1731 Operations

IEEE-compliant Connectivity Fault Management (CFM) must be configured and enabled for Y.1731 performance monitoring to function.

Note

Y1731 is supported on Port Channel interfaces.

Restrictions for IP SLAs Metro-Ethernet 3.0 (ITU-T Y.1731)

  • SNMP is not supported for reporting threshold events or collecting performance statistics for IP SLAs Metro-Ethernet 3.0 (ITU-T Y.1731) operations.

    SNMP is partially supported; the results for DM/LM can be polled for some attributes. However MIB support for all parameters is not supported.

  • Continuity Check Message (CCM)-based dual-ended Ethernet frame loss operations are not supported.

  • In a single-ended Ethernet operation, performance measurement statistics can be retrieved only at the device on which the sender Ethernet Connectivity Fault Management (CFM) Maintenance End Point (MEP) is configured.

  • To avoid losing the CoS value configured on the frames, do not configure rewrite on the EFPs throughout the Layer2 circuit. The CoS value is preserved, if the Y.1731 frames are marked with specific CoS value.

  • CFM over cross-connect on the routers works only if the control-word is configured. To start DM timestamping, switch ON the control-word if the remote end is not switched ON.

  • To avoid errors in RX and TX timestamping, ensure to have Y1731 sender as PTP master, and the Y1731 responder as PTP slave.

  • Reconfigure IP SLA Y1731 while doing online insertion removal (OIR) of IM or router reload because local MEP is deleted during the course.

  • A delay may be observed after issuing the ip sla schedule command after a reload of the router is performed, to populate with the Y.1731 PM measurements.

Configuring IP SLAs Metro-Ethernet 3.0 (ITU-T Y.1731) Operations

This module describes how to configure an IP SLAs Metro-Ethernet 3.0 (ITU-T Y.1731) operation to gather the following performance measurements for Ethernet service:

  • Ethernet Delay

  • Ethernet Delay Variation

  • Ethernet Frame Loss Ratio

How to Configure IP SLAs Metro-Ethernet 3.0 (ITU-T Y.1731) Operations

Configuring a Dual-Ended Ethernet Delay or Delay Variation Operation

Perform the tasks for configuring a dual-ended operation in the order presented.


Note

To remove the MEP configurations in an already-configured dual-ended operation, always remove the MEPs in the reverse order in which they were configured. That is, remove the scheduler first, then the threshold monitoring configuration, and then the sender MEP configuration on the source device before removing the scheduler, proactive threshold monitoring, and receiver MEP configuration on the destination device.

Configuring a Receiver MEP on the Destination Device
Before You Begin

Time synchronization is required between the source and destination devices in order to provide accurate one-way delay (latency) or delay-variation measurements. Configure either Precision Time Protocol (PTP) or Network Time Protocol (NTP) on both the source and destination devices.

SUMMARY STEPS

    1.    enable

    2.    configure terminal

    3.    ip sla operation-number

    4.    ethernet y1731 delay receive 1DM domain domain-name {evc evc-id | vlan vlan-id} cos cos {mpid source-mp-id | mac-address source-address}

    5.    aggregate interval seconds

    6.    distribution {delay | delay-variation} one-way number-of-bins boundary[,...,boundary]

    7.    frame offset offset-value

    8.    history interval intervals-stored

    9.    max-delay milliseconds

    10.    owner owner-id

    11.    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 ip sla operation-number


    Example: 
    Router(config-term)# ip sla 501
     

    Begins configuring an IP SLAs operation and enters IP SLA configuration mode.

     
    Step 4 ethernet y1731 delay receive 1DM domain domain-name {evc evc-id | vlan vlan-id} cos cos {mpid source-mp-id | mac-address source-address}


    Example: 
    Router(config-ip-sla)# ethernet y1731 delay receive 1DM domain xxx evc yyy cos 3 mpid 101
     
    Begins configuring the receiver on the responder and enters IP SLA Y.1731 delay configuration mode.

    • The source-mp-id or source-address configured by this command corresponds to that of the MEP being configured.

    Note   

    The session with mac-address will not be inactivated when there is CFM error.

     
    Step 5 aggregate interval seconds


    Example: 
    Router(config-sla-y1731-delay)# aggregate interval 900
     

    (Optional) Configures the length of time during which the performance measurements are conducted and the results stored.

     
    Step 6 distribution {delay | delay-variation} one-way number-of-bins boundary[,...,boundary]


    Example: 
    Router(config-sla-y1731-delay)# distribution delay-variation one-way 5 5000,10000,15000,20000,-1
     

    (Optional) Specifies measurement type and configures bins for statistics distributions kept.

     
    Step 7 frame offset offset-value


    Example: 
    Router(config-sla-y1731-delay)# frame offset 1
     

    (Optional) Sets the value for calculating delay variation rates.

     
    Step 8 history interval intervals-stored


    Example: 
    Router(config-sla-y1731-delay)# history interval 2
     

    (Optional) Sets the number of statistics distributions kept during the lifetime of an IP SLAs Ethernet operation.

     
    Step 9 max-delay milliseconds


    Example: 
    Router(config-sla-y1731-delay)# max-delay 5000
     

    (Optional) Sets the amount of time an MEP waits for a frame.

     
    Step 10 owner owner-id


    Example: 
    Router(config-sla-y1731-delay)# owner admin
     

    (Optional) Configures the owner of an IP SLAs operation.

     
    Step 11 end


    Example: 
    Router(config-sla-y1731-delay)# end
     

    Exits to privileged EXEC mode.

     
    What to Do Next

    To add proactive threshold conditions and reactive triggering for generating traps, see the "Configuring Proactive Threshold Monitoring" module of the IP SLAs Configuration Guide.

    When you are finished configuring proactive threshold monitoring for this MEP, see the "Scheduling IP SLAs Operations" section to schedule the operation.

    Configuring the Sender MEP on the Source Router
    Before You Begin

    • Time synchronization is required between the source and destination devices in order to provide accurate one-way delay (latency) or delay-variation measurements. Configure either Precision Time Protocol (PTP) or Network Time Protocol (NTP) on both the source and destination devices.

    • The receiver MEP must be configured, including proacive threshold monitoring, and scheduled before you configure the sender MEP.

    SUMMARY STEPS

      1.    enable

      2.    configure terminal

      3.    ip sla operation-number

      4.    ethernet y1731 delay 1DM domain domain-name {evc evc-id | vlan vlan-id} {mpid target-mp-id | mac-address target-address} cos cos {source {mpid source-mp-id | mac-address source-address}}

      5.    aggregate interval seconds

      6.    frame interval milliseconds

      7.    frame size bytes

      8.    history interval intervals-stored

      9.    owner owner-id

      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 ip sla operation-number


      Example: 
      Router(config)# ip sla 500
       

      Begins configuring an IP SLAs operation and enters IP SLA configuration mode.

       
      Step 4 ethernet y1731 delay 1DM domain domain-name {evc evc-id | vlan vlan-id} {mpid target-mp-id | mac-address target-address} cos cos {source {mpid source-mp-id | mac-address source-address}}


      Example: 
      Router(config-ip-sla)# ethernet y1731 delay 1DM domain xxx evc yyy mpid 101 cos 3 source mpid 100
       

      Begins configuring a dual-ended Ethernet delay operation and enters IP SLA Y.1731 delay configuration mode.

      Note   

      The session with mac-address will not be inactivated when there is CFM error.

       
      Step 5 aggregate interval seconds


      Example: 
      Router(config-sla-y1731-delay)# aggregate interval 900
       

      (Optional) Configures the length of time during which the performance measurements are conducted and the results stored.

       
      Step 6 frame interval milliseconds


      Example: 
      Router(config-sla-y1731-delay)# frame interval 100
       

      (Optional) Sets the gap between successive frames.

       
      Step 7 frame size bytes


      Example: 
      Router(config-sla-y1731-delay)# frame size 64
       

      (Optional) Sets the padding size for frames.

       
      Step 8 history interval intervals-stored


      Example: 
      Router(config-sla-y1731-delay)# history interval 2
       

      (Optional) Sets the number of statistics distributions kept during the lifetime of an IP SLAs Ethernet operation.

       
      Step 9 owner owner-id


      Example: 
      Router(config-sla-y1731-delay)# owner admin
       

      (Optional) Configures the owner of an IP SLAs operation.

       
      Step 10 end


      Example: 
      Router(config-sla-y1731-delay)# end
       

      Exits to privileged EXEC mode.

       
      What to Do Next

      To add proactive threshold conditions and reactive triggering for generating traps, see the "Configuring Proactive Threshold Monitoring" module of the IP SLAs Configuration Guide.

      When you are finished configuring proactive threshold monitoring for this MEP, see the "Scheduling IP SLAs Operations" section to schedule the operation.

      Configuring a Sender MEP for a Single-Ended Ethernet Delay or Delay Variation Operation

      Perform this task to configure a sender MEP on the source device.

      Before You Begin

      • Time synchronization is required between the source and destination devices in order to provide accurate one-way delay (latency) or delay-variation measurements. Configure either Precision Time Protocol (PTP) or Network Time Protocol (NTP) on both the source and destination devices.


      Note

      To display information about remote (target) MEPs on destination devices, use the show ethernet cfm maintenance-points remote command.

      SUMMARY STEPS

        1.    enable

        2.    configure terminal

        3.    ip sla operation-number

        4.    ethernet y1731 delay {DMM | DMMv1} [burst] domain domain-name {evc evc-id | vlan vlan-id} {mpid target-mp-id | mac-address target-address} cos cos {source {mpid source-mp-id | mac-address source-address}}

        5.    clock sync

        6.    aggregate interval seconds

        7.    distribution {delay | delay-variation} one-way number-of-bins boundary[,...,boundary]

        8.    frame interval milliseconds

        9.    frame offset offset-value

        10.    frame size bytes

        11.    history interval intervals-stored

        12.    max-delay milliseconds

        13.    owner owner-id

        14.    end


      DETAILED STEPS
         Command or ActionPurpose
        Step 1 enable


        Example: 
        Device> enable
         

        Enables privileged EXEC mode.

        • Enter your password if prompted.

         
        Step 2 configure terminal


        Example: 
        Device# configure terminal
         

        Enters global configuration mode.

         
        Step 3 ip sla operation-number


        Example: 
        Device(config-term)# ip sla 10
         

        Begins configuring an IP SLAs operation and enters IP SLA configuration mode.

         
        Step 4 ethernet y1731 delay {DMM | DMMv1} [burst] domain domain-name {evc evc-id | vlan vlan-id} {mpid target-mp-id | mac-address target-address} cos cos {source {mpid source-mp-id | mac-address source-address}}


        Example: 
        Device(config-ip-sla)# ethernet y1731 delay dmm domain xxx evc yyy mpid 101 cos 4 source mpid 100
         
        Begins configuring a single-ended Ethernet delay operation and enters IP SLA Y.1731 delay configuration mode.

        • To configure concurrent operations, use the DMMv1 keyword with this command. Repeat the preceding two steps to each concurrent operation, to be added to a single IP SLA operation number. Concurrent operations are supported for a given EVC, CoS, and remote MEP combination, or for multiple MEPs for a given multipoint EVC.

        Note   

        The session with mac-address will not be inactivated when there is CFM error.

         
        Step 5 clock sync


        Example: 
        Device(config-sla-y1731-delay)# clock sync
         

        (Optional) Indicates that the end points are synchronized and thus allows the operation to calculate one-way delay measurements.

         
        Step 6 aggregate interval seconds


        Example: 
        Device(config-sla-y1731-delay)# aggregate interval 900
         

        (Optional) Configures the length of time during which the performance measurements are conducted and the results stored.

         
        Step 7 distribution {delay | delay-variation} one-way number-of-bins boundary[,...,boundary]


        Example: 
        Device(config-sla-y1731-delay)# distribution delay-variation one-way 5 5000, 10000,15000,20000,-1
         

        (Optional) Specifies measurement type and configures bins for statistics distributions kept.

         
        Step 8 frame interval milliseconds


        Example: 
        Device(config-sla-y1731-delay)# frame interval 100
         

        (Optional) Sets the gap between successive frames.

         
        Step 9 frame offset offset-value


        Example: 
        Device(config-sla-y1731-delay)# frame offset 1
         

        (Optional) Sets value for calculating delay variation values.

         
        Step 10 frame size bytes


        Example: 
        Device(config-sla-y1731-delay)# frame size 32
         

        (Optional) Configures padding size for frames.

         
        Step 11 history interval intervals-stored


        Example: 
        Device(config-sla-y1731-delay)# history interval 2
         

        (Optional) Sets the number of statistics distributions kept during the lifetime of an IP SLAs Ethernet operation.

         
        Step 12 max-delay milliseconds


        Example: 
        Device(config-sla-y1731-delay)# max-delay 5000
         

        (Optional) Sets the amount of time an MEP waits for a frame.

         
        Step 13 owner owner-id


        Example: 
        Device(config-sla-y1731-delay)# owner admin
         

        (Optional) Configures the owner of an IP SLAs operation.

         
        Step 14 end


        Example: 
        Device(config-sla-y1731-delay)# end
         

        Exits to privileged EXEC mode.

         
        What to Do Next

        To add proactive threshold conditions and reactive triggering for generating traps, see the "Configuring Proactive Threshold Monitoring" module of the IP SLAs Configuration Guide.

        When you are finished configuring proactive threshold monitoring for this operation, see the "Scheduling IP SLAs Operations" section to schedule the operation.

        Configuring a Sender MEP for a Single-Ended Ethernet Frame Loss Ratio Operation


        Note

        This task is not supported on Cisco ME 3600X Series and 3800X Series Ethernet Access Switches


        Note

        To display information about remote (target) MEPs on destination devices, use the show ethernet cfm maintenance-points remote command.

        Perform this task to configure a sender MEP on the source device.

        Before You Begin

        • Class of Service (CoS)-level monitoring must be enabled on MEPs associated to the Ethernet frame loss operation by using the monitor loss counter command on the devices at both ends of the operation. See the Cisco IOS Carrier Ethernet Command Reference for command information. See the "Configuration Examples for IP SLAs Metro-Ethernet 3.0 (ITU-T Y.1731) Operations" section for configuration information.


          Note

          Cisco IOS Y.1731 implementation allows monitoring of frame loss for frames on an EVC regardless of the CoS value (any CoS or Aggregate CoS cases). See the "Configuration Examples for IP SLAs Metro-Ethernet 3.0 (ITU-T Y.1731) Operations" section for configuration information.

        SUMMARY STEPS

          1.    enable

          2.    configure terminal

          3.    ip sla operation-number

          4.    ethernet y1731 loss {LMM | SLM} [burst] domain domain-name {evc evc-id | vlan vlan-id} {mpid target-mp-id | mac-address target-address} CoS CoS {source {mpid source-mp-id | mac-address source-address}}

          5.    aggregate interval seconds

          6.    availability algorithm {sliding-window | static-window}

          7.    frame consecutive value

          8.    frame interval milliseconds

          9.    history interval intervals-stored

          10.    owner owner-id

          11.    exit

          12.    exit

          13.    ip sla reaction-configuration operation-number {react {unavailableDS | unavailableSD} [threshold-type {average [number-of-measurements] | consecutive [occurrences] | immediate}] [threshold-value upper-threshold lower-threshold]

          14.    ip sla logging traps

          15.    exit


        DETAILED STEPS
           Command or ActionPurpose
          Step 1 enable


          Example: 
          Device> enable
           

          Enables privileged EXEC mode.

          • Enter your password if prompted.

           
          Step 2 configure terminal


          Example: 
          Device# configure terminal
           

          Enters global configuration mode.

           
          Step 3 ip sla operation-number


          Example: 
          Device(config-term)# ip sla 11
           

          Begins configuring an IP SLAs operation and enters IP SLA configuration mode.

           
          Step 4 ethernet y1731 loss {LMM | SLM} [burst] domain domain-name {evc evc-id | vlan vlan-id} {mpid target-mp-id | mac-address target-address} CoS CoS {source {mpid source-mp-id | mac-address source-address}}


          Example: 
          Device(config-ip-sla)# ethernet y1731 loss LMM domain xxx vlan 12 mpid 34 CoS 4 source mpid 23
           

          Begins configuring a single-ended Ethernet frame loss ratio operation and enters IP SLA Y.1731 loss configuration mode.

          • To configure concurrent operations, use the SLM keyword with this command. Repeat the preceding two steps to configure each concurrent operation to be added to a single IP SLA operation number. Concurrent operations are supported for a given EVC, CoS, and remote-MEP combination, or for multiple MEPs for a given multipoint EVC.

          Note   

          The session with mac-address will not be inactivated when there is CFM error.

           
          Step 5 aggregate interval seconds


          Example: 
          Device(config-sla-y1731-loss)# aggregate interval 900
           

          (Optional) Configures the length of time during which performance measurements are conducted and the results stored.

           
          Step 6 availability algorithm {sliding-window | static-window}


          Example: 
          Device(config-sla-y1731-loss)# availability algorithm static-window
           

          (Optional) Specifies availability algorithm used.

           
          Step 7 frame consecutive value


          Example: 
          Device(config-sla-y1731-loss)# frame consecutive 10
           

          (Optional) Specifies number of consecutive measurements to be used to determine availability or unavailability status.

           
          Step 8 frame interval milliseconds


          Example: 
          Device(config-sla-y1731-loss)# frame interval 100
           

          (Optional) Sets the gap between successive frames.

           
          Step 9 history interval intervals-stored


          Example: 
          Device(config-sla-y1731-loss)# history interval 2
           

          (Optional) Sets the number of statistics distributions kept during the lifetime of an IP SLAs Ethernet operation.

           
          Step 10 owner owner-id


          Example: 
          Device(config-sla-y1731-delay)# owner admin
           

          (Optional) Configures the owner of an IP SLAs operation.

           
          Step 11 exit


          Example: 
          Device(config-sla-y1731-delay)# exit
           

          Exits to IP SLA configuration mode.

           
          Step 12 exit


          Example: 
          Device(config-ip-sla)# exit
           

          Exits to global configuration mode.

           
          Step 13 ip sla reaction-configuration operation-number {react {unavailableDS | unavailableSD} [threshold-type {average [number-of-measurements] | consecutive [occurrences] | immediate}] [threshold-value upper-threshold lower-threshold]


          Example: 
          Device(config)# ip sla reaction-configuration 11 react unavailableDS
           

          (Optional) Configures proactive threshold monitoring for frame loss measurements.

           
          Step 14 ip sla logging traps


          Example: 
          Device(config)# ip sla logging traps
           

          (Optional) Enables IP SLAs syslog messages from CISCO-RTTMON-MIB.

           
          Step 15 exit


          Example: 
          Device(config)# exit
           

          Exits to privileged EXEC mode.

           
          What to Do Next

          When you are finished configuring this MEP, see the "Scheduling IP SLAs Operations" section to schedule the operation.

          Scheduling IP SLAs Operations

          Before You Begin

          • All IP Service Level Agreements (SLAs) operations to be scheduled must be already configured.
          • The frequency of all operations scheduled in a multioperation group must be the same.
          • The list of one or more operation ID numbers to be added to a multioperation group must be limited to a maximum of 125 characters in length, including commas (,).

          SUMMARY STEPS

            1.    enable

            2.    configure terminal

            3.    Enter one of the following commands:

            • ip sla schedule operation-number [life {forever | seconds}] [start-time {[hh:mm:ss] [month day | day month] | pending | now | after hh:mm:ss}] [ageout seconds] [recurring]
            • ip sla group schedule group-operation-number operation-id-numbers {schedule-period schedule-period-range | schedule-together} [ageout seconds] frequency group-operation-frequency [life {forever | seconds}] [start-time {hh:mm [:ss] [month day | day month] | pending | now | after hh:mm [:ss]}]

            4.    end

            5.    show ip sla group schedule

            6.    show ip sla configuration


          DETAILED STEPS
             Command or ActionPurpose
            Step 1 enable


            Example: 
            Device> enable
             

            Enables privileged EXEC mode.

            • Enter your password if prompted.

             
            Step 2 configure terminal


            Example: 
            Device# configure terminal
             

            Enters global configuration mode.

             
            Step 3 Enter one of the following commands:
            • ip sla schedule operation-number [life {forever | seconds}] [start-time {[hh:mm:ss] [month day | day month] | pending | now | after hh:mm:ss}] [ageout seconds] [recurring]
            • ip sla group schedule group-operation-number operation-id-numbers {schedule-period schedule-period-range | schedule-together} [ageout seconds] frequency group-operation-frequency [life {forever | seconds}] [start-time {hh:mm [:ss] [month day | day month] | pending | now | after hh:mm [:ss]}]


            Example: 
            Device(config)# ip sla schedule 10 life forever start-time now
            Device(config)# ip sla group schedule 10 schedule-period frequency
            Device(config)# ip sla group schedule 1 3,4,6-9 life forever start-time now 
            Device(config)# ip sla schedule 1 3,4,6-9 schedule-period 50 frequency range 80-100
             

            • Configures the scheduling parameters for an individual IP SLAs operation.

            • Specifies an IP SLAs operation group number and the range of operation numbers for a multioperation scheduler.

             
            Step 4 end


            Example: 
            Device(config)# end
             

            Exits global configuration mode and returns to privileged EXEC mode.

             
            Step 5 show ip sla group schedule


            Example: 
            Device# show ip sla group schedule
             

            (Optional) Displays IP SLAs group schedule details.

             
            Step 6 show ip sla configuration


            Example: 
            Device# show ip sla configuration
             

            (Optional) Displays IP SLAs configuration details.

             

            Configuration Examples for IP SLAs Metro-Ethernet 3.0 (ITU-T Y.1731) Operations

            Example: Dual-Ended Ethernet Delay Operation

            The following sample output shows the configuration, including default values, of a receiver MEP on the responder device for a dual-ended Ethernet delay or delay variation operation: 

            Device# show ip sla configuration 501 

IP SLAs Infrastructure Engine-III
Entry number: 501
Owner: admin
Tag: 
Operation timeout (milliseconds): 5000
Ethernet Y1731 Delay Operation
Frame Type: 1DM
Domain: xxx
ReceiveOnly: TRUE
Evc: yyy
Local Mpid: 101
CoS: 3
   Max Delay: 5000
Threshold (milliseconds): 5000
.
.
.
Statistics Parameters
  Aggregation Period: 900
  Frame offset: 1
  Distribution Delay One-Way: 
   Number of Bins 10
   Bin Boundaries: 5000,10000,15000,20000,25000,30000,35000,40000,45000,-1
  Distribution Delay-Variation One-Way: 
   Number of Bins 10
   Bin Boundaries: 5000,10000,15000,20000,25000,30000,35000,40000,45000,-1
History
  Number of intervals: 2

            The following sample output shows the configuration, including default values, of the sender MEP for a dual-ended IP SLAs Ethernet delay or delay variation operation: 

            Device# show ip sla configuration 500 

IP SLAs Infrastructure Engine-III
Entry number: 500
Owner: 
Tag: 
Operation timeout (milliseconds): 5000
Ethernet Y1731 Delay Operation
Frame Type: 1DM
Domain: yyy
ReceiveOnly: FALSE
Evc: xxx
Target Mpid: 101
Source Mpid: 100
CoS: 3
   Request size (Padding portion): 64
   Frame Interval: 1000
Threshold (milliseconds): 5000
.
.
.
Statistics Parameters
  Aggregation Period: 900
  Frame offset: 1
History
  Number of intervals: 22

            Example: Frame Delay and Frame Delay Variation Measurement Configuration

            The following sample output shows the performance monitoring session summary:

            Device# show ethernet cfm pm session summary

Number of Configured Session : 2
Number of Active Session: 2
Number of Inactive Session: 0

            The following sample output shows the active performance monitoring session:

            Device# show ethernet cfm pm session active

Display of Active Session
--------------------------------------------------------------------------------
EPM-ID   SLA-ID    Lvl/Type/ID/Cos/Dir     Src-Mac-address Dst-Mac-address
--------------------------------------------------------------------------------
 0     10           3/BD-V/10/2/Down     d0c2.8216.c9d7  d0c2.8216.27a3
 1     11           3/BD-V/10/3/Down     d0c2.8216.c9d7  d0c2.8216.27a3
Total number of Active Session: 2

            Device# show ethernet cfm pm session db 0

----------------------------------------------------------------------------
      TX Time FWD                   RX Time FWD
      TX Time BWD                   RX Time BWD              Frame Delay
      Sec:nSec                      Sec:nSec                  Sec:nSec
----------------------------------------------------------------------------
Session ID: 0
****************************************************************************
       234:526163572                  245:305791416
       245:306761904                  234:527134653            0:593
****************************************************************************
       235:528900628                  246:308528744
       246:309452848                  235:529825333            0:601
****************************************************************************
       236:528882716                  247:308511128
       247:309450224                  236:529822413            0:601
****************************************************************************
       237:526578788                  248:306207432
       248:307157936                  237:527529885            0:593
****************************************************************************
       238:527052156                  249:306681064
       249:307588016                  238:527959717            0:609
****************************************************************************
       239:526625044                  250:306254200
       250:307091888                  239:527463325            0:593
****************************************************************************
       240:528243204                  251:307872648
       251:308856880                  240:529228021            0:585

            Example: Sender MEP for a Single-Ended Ethernet Delay Operation

            The following sample output shows the configuration, including default values, of the sender MEP for a single-ended IP SLAs Ethernet delay operation: 

            Router# show ip sla configuration 10 

IP SLAs Infrastructure Engine-III
Entry number: 10
Owner: 
Tag: 
Operation timeout (milliseconds): 5000
Ethernet Y1731 Delay Operation
Frame Type: DMM
Domain: xxx
Vlan: yyy
Target Mpid: 101
Source Mpid: 100
CoS: 4
   Max Delay: 5000
   Request size (Padding portion): 64
   Frame Interval: 1000
   Clock: Not In Sync
Threshold (milliseconds): 5000
.
.
.
Statistics Parameters
  Aggregation Period: 900
  Frame offset: 1
  Distribution Delay Two-Way: 
   Number of Bins 10
   Bin Boundaries: 5000,10000,15000,20000,25000,30000,35000,40000,45000,-1
  Distribution Delay-Variation Two-Way: 
   Number of Bins 10
   Bin Boundaries: 5000,10000,15000,20000,25000,30000,35000,40000,45000,-1
History
  Number of intervals: 2

            Example: Sender MEP for a Single-Ended Ethernet Frame Loss Operation

            The following output shows the configuration, including default values, of the sender MEP in a basic single-ended IP SLAs Ethernet frame loss ratio operation with a start-time of now: 

            Router# show ip sla configuration 11 

IP SLAs Infrastructure Engine-III
Entry number: 11
Owner: 
Tag: 
Operation timeout (milliseconds): 5000
Ethernet Y1731 Loss Operation
Frame Type: LMM
Domain: xxx
Vlan: 12
Target Mpid: 34
Source Mpid: 23
CoS: 4
   Request size (Padding portion): 0
   Frame Interval: 1000
Schedule:
   Operation frequency (seconds): 60  (not considered if randomly scheduled)
   Next Scheduled Start Time: Start Time already passed
   Group Scheduled : FALSE
   Randomly Scheduled : FALSE
   Life (seconds): 3600
   Entry Ageout (seconds): never
   Recurring (Starting Everyday): FALSE
   Status of entry (SNMP RowStatus): ActiveThreshold (milliseconds): 5000
Statistics Parameters
  Aggregation Period: 900
  Frame consecutive: 10
  Availability algorithm: static-window
History
  Number of intervals: 2

            Additional References for IP SLAs Metro-Ethernet 3.0 (ITU-T Y.1731) Operations

            Related Documents

            Related Topic

            Document Title

            Cisco IOS commands

            Cisco IOS Master Commands List, All Releases

            Cisco IOS Carrier Ethernet commands

            Cisco IOS Carrier Ethernet Command Reference

            Cisco IOS IP SLAs commands

            Cisco IOS IP SLAs Command Reference

            Ethernet CFM

            “Configuring Ethernet Connectivity Fault Management in a Service Provider Network” module of the Cisco IOS Carrier Ethernet Configuration Guide

            Network Time Protocol (NTP)

            “Configuring NTP” module of the Cisco IOS Network Management Configuration Guide

            Proactive threshold monitoring for Cisco IOS IP SLAs

            “Configuring Proactive Threshold Monitoring of IP SLAs Operations” module of the Cisco IOS IP SLAs Configuration Guide

            Standards and RFCs

            Standard/RFC

            Title

            ITU-T Y.1731

            OAM functions and mechanisms for Ethernet-based networks

            No specific RFCs are supported by the features in this document.

            --

            MIBs

            MIB

            MIBs Link

            • CISCO-IPSLA-ETHERNET-MIB

            • CISCO-RTTMON-MIB

            To locate and download MIBs for selected platforms, Cisco software 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 and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password.

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

            Feature Information for IP SLAs Metro-Ethernet 3.0 (ITU-T Y.1731) Operations

            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 IP SLAs Metro-Ethernet 3.0 (ITU-T Y.1731)

            Feature Name

            Releases

            Feature Information

            IP SLA Support for ETH-SLM (Ethernet Synthetic Loss Measurement in Y1731)

            Cisco IOS XE Release 3.8S

            Y.1731 Performance Monitoring (PM) provides a standard Ethernet PM function that includes measurement of Ethernet frame delay, frame delay variation, frame loss, and frame throughput measurements specified by the ITU-T Y-1731 standard and interpreted by the Metro Ethernet Forum (MEF) standards group.

            In Cisco IOS XE Release 3.8S, support was added for Cisco ASR 900 Series.

            Y1731 MIB Support through existing IPSLA MIBs

            Cisco IOS XE Release 3.8S

            Support was added for reporting threshold events and collecting performance statistics for IP SLAs Metro-Ethernet 3.0 (ITU-T Y.1731) operations using SNMP.