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Network Management and Monitoring Guide
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{ "lLangCode": "en", "lName": "English", "lCountryCode": "us", "transcode": "en_US" }
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Configure Ethernet Frame Loss Measurement

date_range 08-Dec-23

Use this topic to understand more about frame loss measurement and how to configure frame loss measurement.

Currently, loss measurement is not available for Multi-LU cards (MPC3E and MPC4E), and there are no command line interface restrictions for configuration.

Configuring Statistical Frame Loss Measurement for VPLS Connections

Using proactive statistical frame loss measurement, you can monitor VPLS connections on MX Series routers . Statistical frame loss measurement allows you to monitor the quality of Ethernet connections for service level agreements (SLAs). Point-to-point and multipoint-to-multipoint connections configured on MX Series routers can be monitored by registering the connection on an iterator and initiating periodic SLA measurement of frame transmissions on the connections.

Iterators periodically transmit SLA measurement packets using ITU-Y.1731 compliant frames. The iterator sends periodic measurement packets for each of the connections registered to it. These measurement cycles are transmitted in such a way as to not overlap, reducing the processing demands placed on the CPU. The measurement packets are exchanged between the source user network interface (UNI) port and the destination UNI port, providing a sequence of timed performance measurements for each UNI pair. The Frame Loss Ratio (FLR) and connection availability can be computed from these measurements using statistics.

The following steps outline how to configure statistical frame loss measurement for VPLS connections:

  1. To configure proactive ETH-DM measurement for a VPLS connection, see Guidelines for Configuring Routers to Support an ETH-DM Session.
  2. To enable statistical loss measurement for a VPLS connection, configure an iterator for the VPLS connection using the sla-iterator-profiles statement at the [edit protocols oam ethernet connectivity-fault-management performance-monitoring] hierarchy level. For detailed instructions, see Configuring an Iterator Profile.
  3. As part of the iterator configuration, include the statistical-frame-loss option for the measurement-type statement at the [edit protocols oam ethernet connectivity-fault-management performance-monitoring sla-iterator-profiles profile-name] hierarchy level.
  4. Once you have enabled the iterator, you can display the statistical frame loss for a VPLS connection by issuing the show oam ethernet connectivity-fault-management sla-iterator-statistics sla-iterator identifier maintenance-domain name maintenance-association name local-mep identifier remote-mep identifier command.

Managing ETH-LM Statistics

Displaying ETH-LM Statistics

Purpose

Display the ETH-LM statistics.

By default, the show oam ethernet connectivity-fault-management loss-statistics maintenance-domain md-name maintenance-association ma-name command displays ETH-LM statistics for MEPs in the specified CFM maintenance association (MA) within the specified CFM maintenance domain (MD).

The following list consists of the CFM-related operational mode commands that have been enhanced to display ETH-LM statistics:

  • The show oam ethernet connectivity-fault-management interfaces detail command is enhanced to display ETH-DM and ETH-LM statistics for MEPs in the specified CFM maintenance association (MA) within the specified CFM maintenance domain (MD).

  • The show oam ethernet connectivity-fault-management mep-statistics command is enhanced to display ETH-DM and ETH-LM statistics and frame counts for MEPs in the specified CFM maintenance association (MA) within the specified CFM maintenance domain (MD).

  • The show oam ethernet connectivity-fault-management mep-database command is enhanced to display ETH-DM and ETH-LM frame counters for MEPs in the specified CFM maintenance association (MA) within the specified CFM maintenance domain (MD).

Action

  • To display the ETH-LM statistics for all MEPs attached to CFM-enabled interfaces on the router:

    content_copy zoom_out_map
    user@host> show oam ethernet connectivity-fault-management loss-statistics
  • To display the ETH-DM statistics collected for MEPs belonging to MA ma1 and within MD md1:

    content_copy zoom_out_map
    user@host> show oam ethernet connectivity-fault-management delay-statistics maintenance-domain md1 maintenance-association ma1
  • To display the ETH-DM statistics and ETH-DM frame counts for MEPs in MA ma1 and within MD md1:

    content_copy zoom_out_map
    user@host> show oam ethernet connectivity-fault-management mep-statistics maintenance-domain md1 maintenance-association ma1
  • To display CFM database information (including ETH-DM frame counts) for all MEPs in MA ma1 within MD md1:

    content_copy zoom_out_map
    user@host> show oam ethernet connectivity-fault-management mep-database maintenance-domain md1 maintenance-association ma1

Clearing ETH-LM Statistics

Purpose

Clear the ETH-LM statistics.

By default, statistics are deleted for all MEPs attached to CFM-enabled interfaces on the router. However, you can filter the scope of the command by specifying an interface name.

Action

  • To clear the ETH-LM statistics for all MEPs attached to CFM-enabled interfaces on the router:

    content_copy zoom_out_map
    user@host> clear oam ethernet connectivity-fault-management loss-statistics

Example: Measuring Ethernet Frame Loss for Single-Tagged LMM/LMR PDUs

This example illustrates how to configure Ethernet frame loss measurement (ETH-LM) for single-tagged Loss Measurement Message (LMM)/Loss Measurement Reply (LMR) protocol data units (PDUs). By configuring ETH-LM, you can measure the Ethernet frame loss that occur in your network.

Requirements

This example uses the following hardware and software components:

  • Two MX Series 5G Universal Routing Platforms with Rev-B Dense Port Concentrators (DPCs)

  • Junos OS Release 14.2 or later

Overview and Topology

Junos OS supports Ethernet frame loss measurement (ETH-LM) between maintenance association end points (MEPs) configured on Ethernet physical or logical interfaces on Rev-B Dense Port Concentrators (DPCs) in MX Series routers. Additionally, the Y.1731 functionality supports ETH-LM only for an end-to-end connection that uses Virtual Private Wire Service (VPWS). This example illustrates how to configure ETH-LM for single-tagged LMM/LMR PDUs with input and output VLAN map configured as swap.

Figure 1 shows the topology used in this example. VPWS service is configured between two MX Series routers, MX-PE1 and MX PE2.

Figure 1: VPWS Service Configured Between Two MX Series RoutersVPWS Service Configured Between Two MX Series Routers

MX-PE1 router has two Ethernet interfaces, ge-5/0/4 and ge-5/1/9. Virtual LAN (VLAN) is configured on ge-5/0/4 and MPLS is configured on the ge-5/1/9 interface. The ge-5/0/4.11 interface is used to configure the Layer 2 virtual circuit with MX-PE2 router. The UP MEP, mep 2, is attached to the ge-5/0/4.11 interface. The three-color policer firewall filter is also configured for the MX-PE1 router.

Similarly, MX-PE2 router has two Ethernet interfaces, ge-8/0/8 and ge-8/0/9. Virtual LAN (VLAN) is configured on ge-8/0/8 and MPLS is configured on the ge-8/0/9 interface. The ge-8/0/8.11 interface is used to configure the Layer 2 virtual circuit with MX-PE1 router. The UP MEP, mep 1, is attached to the ge-8/0/8.11 interface. The three-color policer firewall filter is also configured for the MX-PE2 router.

Configuration

CLI Quick Configuration

To quickly configure ETH-LM for single-tagged LMM/LMR PDUs, copy the following commands, remove any line breaks, and then paste the commands into the CLI of each device.

On Router PE1:

content_copy zoom_out_map
[edit]
set interfaces ge-5/0/4 encapsulation flexible-ethernet-services
set interfaces ge-5/0/4 unit 11 encapsulation vlan-ccc
set interfaces ge-5/0/4 unit 11 layer2-policer input-three-color abc
set interfaces ge-5/0/4 unit 11 family ccc
set interfaces ge-5/1/9 enable
set interfaces ge-5/1/9 unit 0 family inet address 12.1.1.1/24
set interfaces ge-5/1/9 unit 0 family mpls
set interfaces lo0 unit 0 family inet address 4.4.4.4/32
set interfaces ge-5/0/4 flexible-vlan-tagging
set interfaces ge-5/0/4 unit 11 vlan-id 2000
set interfaces ge-5/0/4 unit 11 input-vlan-map swap
set interfaces ge-5/0/4 unit 11 input-vlan-map vlan-id 4094
set interfaces ge-5/0/4 unit 11 output-vlan-map swap
set routing-options router-id 4.4.4.4
set protocols mpls interface all
set protocols mpls interface fxp0.0 disable
set protocols ospf area 0.0.0.0 interface all
set protocols ospf area 0.0.0.0 interface fxp0.0 disable
set protocols ldp interface all
set protocols ldp interface fxp0.0 disable
set protocols l2circuit neighbor 3.3.3.3 interface ge-5/0/4.11 virtual-circuit-id 1003
set protocols l2circuit neighbor 3.3.3.3 interface ge-5/0/4.11 no-control-word
set protocols oam ethernet connectivity-fault-management performance-monitoring delegate-server-processing
set protocols oam ethernet connectivity-fault-management maintenance-domain md level 4
set protocols oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma continuity-check interval 1s
set protocols oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 2 interface ge-5/0/4.11
set protocols oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 2 direction up
set protocols oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 2 remote-mep 1
set firewall three-color-policer abc logical-interface-policer
set firewall three-color-policer abc two-rate color-blind
set firewall three-color-policer abc two-rate committed-information-rate 10m
set firewall three-color-policer abc two-rate committed-burst-size 1500
set firewall three-color-policer abc two-rate peak-information-rate 20m
set firewall three-color-policer abc two-rate peak-burst-size 15k

On Router PE2:

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[edit]
set interfaces ge-8/0/8 encapsulation flexible-ethernet-services
set interfaces ge-8/0/8 unit 11 encapsulation vlan-ccc
set interfaces ge-8/0/8 unit 11 layer2-policer input-three-color abc
set interfaces ge-8/0/8 unit 11 family ccc
set interfaces ge-8/0/9 enable
set interfaces ge-8/0/9 unit 0 family inet address 12.1.1.1/24
set interfaces ge-8/0/9 unit 0 family mpls
set interfaces ae0 unit 0 family inet
set interfaces lo0 unit 0 family inet address 3.3.3.3/32
set interfaces ge-8/0/8 flexible-vlan-tagging
set interfaces ge-8/0/8 unit 11 vlan-id 2000
set interfaces ge-8/0/8 unit 11 input-vlan-map swap
set interfaces ge-8/0/8 unit 11 input-vlan-map vlan-id 4094
set interfaces ge-8/0/8 unit 11 output-vlan-map swap
set routing-options router-id 3.3.3.3
set protocols mpls interface all
set protocols mpls interface fxp0.0 disable
set protocols ospf area 0.0.0.0 interface all
set protocols ospf area 0.0.0.0 interface fxp0.0 disable
set protocols ldp interface all
set protocols ldp interface fxp0.0 disable
set protocols l2circuit neighbor 4.4.4.4 interface ge-8/0/8.11 virtual-circuit-id 1003
set protocols l2circuit neighbor 3.3.3.3 interface ge-8/0/8.11 no-control-word
set protocols oam ethernet connectivity-fault-management maintenance-domain md level 4
set protocols oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma continuity-check interval 1s
set protocols oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 1 interface ge-8/0/8.11
set protocols oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 1 direction up
set protocols oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 1 remote-mep 2
set firewall three-color-policer abc logical-interface-policer
set firewall three-color-policer abc two-rate color-blind
set firewall three-color-policer abc two-rate committed-information-rate 10m
set firewall three-color-policer abc two-rate committed-burst-size 1500
set firewall three-color-policer abc two-rate peak-information-rate 20m
set firewall three-color-policer abc two-rate peak-burst-size 15k

Configuring Router PE1

Step-by-Step Procedure

To configure Router PE1:

  1. Configure the interfaces.

    content_copy zoom_out_map
    [edit]
    user@PE1# edit interfaces
    [edit interfaces]
    user@PE1# set ge-5/0/4 encapsulation flexible-ethernet-services
    user@PE1# set ge-5/0/4 unit 11 encapsulation vlan-ccc
    user@PE1# set ge-5/0/4 unit 11 layer2-policer input-three-color abc
    user@PE1# set ge-5/0/4 unit 11 family ccc
    user@PE1# set ge-5/1/9 enable
    user@PE1# set ge-5/1/9 unit 0 family inet address 12.1.1.1/24
    user@PE1# set ge-5/1/9 unit 0 family mpls
    user@PE1# set lo0 unit 0 family inet address 4.4.4.4/32
    
  2. Configure the VLAN.

    content_copy zoom_out_map
    [edit interfaces]
    user@PE1# set ge-5/0/4 flexible-vlan-tagging
    user@PE1# set ge-5/0/4 unit 11 vlan-id 2000
    user@PE1# set ge-5/0/4 unit 11 input-vlan-map swap
    user@PE1# set ge-5/0/4 unit 11 input-vlan-map vlan-id 4094
    user@PE1# set ge-5/0/4 unit 11 output-vlan-map swap
    
  3. Configure the router identifier to identify the routing device.

    content_copy zoom_out_map
    [edit]
    user@PE1# edit routing-options
    [edit routing-options]
    user@PE1# set router-id 4.4.4.4
    
  4. Configure MPLS, OSPF, and LDP protocols.

    content_copy zoom_out_map
    [edit]
    user@PE1# edit protocols
    [edit protocols]
    user@PE1# set mpls interface all
    user@PE1# set mpls interface fxp0.0 disable
    user@PE1# set ospf area 0.0.0.0 interface all
    user@PE1# set ospf area 0.0.0.0 interface fxp0.0 disable
    user@PE1# set ldp interface all
    user@PE1# set ldp interface fxp0.0 disable
    
  5. Configure the Layer 2 circuit.

    content_copy zoom_out_map
    [edit protocols]
    user@PE1# set l2circuit neighbor 3.3.3.3 interface ge-5/0/4.11 virtual-circuit-id 1003
    user@PE1# set l2circuit neighbor 3.3.3.3 interface ge-5/0/4.11 no-control-word
    
  6. Configure the MEP.

    content_copy zoom_out_map
    [edit protocols]
    user@PE1# set oam ethernet connectivity-fault-management performance-monitoring delegate-server-processing
    user@PE1# set oam ethernet connectivity-fault-management maintenance-domain md level 4
    user@PE1# set oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma continuity-check interval 1s
    user@PE1# set oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 2 interface ge-5/0/4.11
    user@PE1# set oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 2 direction up
    user@PE1# set oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 2 remote-mep 1
    
  7. Configure the firewall.

    content_copy zoom_out_map
    [edit]
    user@PE1# edit firewall
    [edit firewall]
    user@PE1# set three-color-policer abc logical-interface-policer
    user@PE1# set three-color-policer abc two-rate color-blind
    user@PE1# set three-color-policer abc two-rate committed-information-rate 10m
    user@PE1# set three-color-policer abc two-rate committed-burst-size 1500
    user@PE1# set three-color-policer abc two-rate peak-information-rate 20m
    user@PE1# set three-color-policer abc two-rate peak-burst-size 15k
    
  8. Commit the configuration.

    content_copy zoom_out_map
    [edit]
    user@PE1# commit
    
Results

From configuration mode, confirm your configuration by entering the show interfaces, show protocols, show routing-options, and show firewall commands. If the output does not display the intended configuration, repeat the instructions in this example to correct the configuration.

content_copy zoom_out_map
user@PE1# show interfaces
interfaces {
    ge-5/0/4 {
        flexible-vlan-tagging;
        encapsulation flexible-ethernet-services;
        unit 11 {
            encapsulation vlan-ccc;
            vlan-id 2000;
            input-vlan-map {
                swap;
                vlan-id 4094;
            }
            output-vlan-map swap;
            layer2-policer {
                input-three-color abc;
            }
            family ccc;
        }
    }
    ge-5/1/9 {
        enable;
        unit 0 {
            family inet {
                address 12.1.1.1/24;
            }
            family mpls;
        }
    }
    lo0 {
        unit 0 {
            family inet {
                address 4.4.4.4/32;
            }
        }
    }
}
content_copy zoom_out_map
user@PE1# show protocols
protocols {
    mpls {
        interface all;
        interface fxp0.0 {
            disable;
        }
    }
    ospf {
        area 0.0.0.0 {
            interface all;
            interface fxp0.0 {
                disable;
            }
        }
    }
    ldp {
        interface all;
        interface fxp0.0 {
            disable;
        }
    }
    l2circuit {
        neighbor 3.3.3.3 {
            interface ge-5/0/4.11 {
                virtual-circuit-id 1003;
                no-control-word;
            }
        }
    }
    oam {
        ethernet {
            connectivity-fault-management {
                performance-monitoring {
                    delegate-server-processing;
                }
                maintenance-domain md {
                    level 4;
                    maintenance-association ma {
                        continuity-check {
                            interval 1s;
                        }
                        mep 2 {
                            interface ge-5/0/4.11;
                            direction up;
                            remote-mep 1;
                        }
                    }
                }
            }
        }
    }
}
content_copy zoom_out_map
user@PE1# show routing-options
routing-options {
    router-id 4.4.4.4;
}
content_copy zoom_out_map
user@PE1# show firewall
firewall {
    three-color-policer abc {
        logical-interface-policer;
        two-rate {
            color-blind;
            committed-information-rate 10m;
            committed-burst-size 1500;
            peak-information-rate 20m;
            peak-burst-size 15k;
        }
    }
}

Configuring Router PE2

Step-by-Step Procedure

To configure Router PE2:

  1. Configure the interfaces.

    content_copy zoom_out_map
    [edit]
    user@PE2# edit interfaces
    [edit interfaces]
    user@PE2# set ge-8/0/8 encapsulation flexible-ethernet-services
    user@PE2# set ge-8/0/8 unit 11 encapsulation vlan-ccc
    user@PE2# set ge-8/0/8 unit 11 layer2-policer input-three-color abc
    user@PE2# set ge-8/0/8 unit 11 family ccc
    user@PE2# set ge-8/0/9 enable
    user@PE2# set ge-8/0/9 unit 0 family inet address 12.1.1.1/24
    user@PE2# set ge-8/0/9 unit 0 family mpls
    user@PE2# set ae0 unit 0 family inet
    user@PE2# set lo0 unit 0 family inet address 3.3.3.3/32
    
  2. Configure the VLAN.

    content_copy zoom_out_map
    [edit interfaces]
    user@PE2# set ge-8/0/8 flexible-vlan-tagging
    user@PE2# set ge-8/0/8 unit 11 vlan-id 2000
    user@PE2# set ge-8/0/8 unit 11 input-vlan-map swap
    user@PE2# set ge-8/0/8 unit 11 input-vlan-map vlan-id 4094
    user@PE2# set ge-8/0/8 unit 11 output-vlan-map swap
    
  3. Configure the router identifier to identify the routing device.

    content_copy zoom_out_map
    [edit]
    user@PE2# edit routing-options
    [edit routing-options]
    user@PE2# set router-id 3.3.3.3
    
  4. Configure MPLS, OSPF, and LDP protocols.

    content_copy zoom_out_map
    [edit]
    user@PE2# edit protocols
    [edit protocols]
    user@PE2# set mpls interface all
    user@PE2# set mpls interface fxp0.0 disable
    user@PE2# set ospf area 0.0.0.0 interface all
    user@PE2# set ospf area 0.0.0.0 interface fxp0.0 disable
    user@PE2# set ldp interface all
    user@PE2# set ldp interface fxp0.0 disable
    
  5. Configure the Layer 2 circuit.

    content_copy zoom_out_map
    [edit protocols]
    user@PE2# set l2circuit neighbor 4.4.4.4 interface ge-8/0/8.11 virtual-circuit-id 1003
    user@PE2# set l2circuit neighbor 3.3.3.3 interface ge-8/0/8.11 no-control-word
    
  6. Configure the MEP.

    content_copy zoom_out_map
    [edit protocols]
    user@PE2# set oam ethernet connectivity-fault-management maintenance-domain md level 4
    user@PE2# set oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma continuity-check interval 1s
    user@PE2# set oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 1 interface ge-8/0/8.11
    user@PE2# set oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 1 direction up
    user@PE2# set oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 1 remote-mep 2
    
  7. Configure the firewall.

    content_copy zoom_out_map
    [edit]
    user@PE2# edit firewall
    [edit firewall]
    user@PE2# set three-color-policer abc logical-interface-policer
    user@PE2# set three-color-policer abc two-rate color-blind
    user@PE2# set three-color-policer abc two-rate committed-information-rate 10m
    user@PE2# set three-color-policer abc two-rate committed-burst-size 1500
    user@PE2# set three-color-policer abc two-rate peak-information-rate 20m
    user@PE2# set three-color-policer abc two-rate peak-burst-size 15k
    
  8. Commit the configuration.

    content_copy zoom_out_map
    [edit]
    user@PE2# commit
    
Results

From configuration mode, confirm your configuration by entering the show interfaces, show protocols, show routing-options, and show firewall commands. If the output does not display the intended configuration, repeat the instructions in this example to correct the configuration.

content_copy zoom_out_map
user@PE2# show interfaces
interfaces {
    ge-8/0/8 {
        flexible-vlan-tagging;
        encapsulation flexible-ethernet-services;
        unit 11 {
            encapsulation vlan-ccc;
            vlan-id 2000;
            input-vlan-map {
                swap;
                vlan-id 4094;
            }
            output-vlan-map swap;
            layer2-policer {
                input-three-color abc;
            }
            family ccc;
        }
    }
    ge-8/0/9 {
        unit 0 {
            family inet {
                address 12.1.1.2/24;
            }
            family mpls;
        }
    }
    ae0 {
        unit 0 {
            family inet;
        }
    }
    lo0 {
        unit 0 {
            family inet {
                address 3.3.3.3/32;
            }
        }
    }
}
content_copy zoom_out_map
user@PE2# show protocols
protocols {
    mpls {
        interface all;
        interface fxp0.0 {
            disable;
        }
    }
    ospf {
        area 0.0.0.0 {
            interface all;
            interface fxp0.0 {
                disable;
            }
        }
    }
    ldp {
        interface all;
        interface fxp0.0 {
            disable;
        }
    }
    l2circuit {
        neighbor 4.4.4.4 {
            interface ge-8/0/8.11 {
                virtual-circuit-id 1003;
                no-control-word;
            }
        }
    }
    oam {
        ethernet {
            connectivity-fault-management {
                maintenance-domain md {
                    level 4;
                    maintenance-association ma {
                        continuity-check {
                            interval 1s;
                        }
                        mep 1 {
                            interface ge-8/0/8.11;
                            direction up;
                            remote-mep 2;
                        }
                    }
                }
            }
        }
    }
}
content_copy zoom_out_map
user@PE2# show routing-options
routing-options {
    router-id 3.3.3.3;
}
content_copy zoom_out_map
user@PE2# show firewall
firewall {
    three-color-policer abc {
        logical-interface-policer;
        two-rate {
            color-blind;
            committed-information-rate 10m;
            committed-burst-size 1500;
            peak-information-rate 20m;
            peak-burst-size 15k;
        }
    }
}

Verification

To start monitoring the Ethernet frame loss, issue the monitor ethernet loss-measurement maintenance-domain md maintenance-association ma mep 1 command. Frame loss is calculated by collecting the counter values applicable for ingress and egress service frames where the counters maintain a count of transmitted and received data frames between a pair of MEPs. The loss measurement statistics are retrieved as the output of the monitor ethernet loss-measurement command. You can also issue the show oam ethernet connectivity-fault-management interfaces detail ge-5/0/4.11 command to display ETH-LM statistics.

Viewing ETH-LM

Purpose

View the ETH-LM statistics.

Action

From operational mode, enter the show oam ethernet connectivity-fault-management interfaces detail ge-5/0/4.11 command.

content_copy zoom_out_map
user@PE1> show oam ethernet connectivity-fault-management interfaces detail ge-5/0/4.11
Interface name: ge-5/0/4.11 , Interface status: Active, Link status: Up
  Maintenance domain name: md, Format: string, Level: 4
    Maintenance association name: ma, Format: string
    Continuity-check status: enabled, Interval: 1s, Loss-threshold: 3 frames
    Interface status TLV: none, Port status TLV: none
    Connection Protection TLV: no
    MEP identifier: 2, Direction: up, MAC address: 00:24:dc:9b:96:76
    MEP status: running
    Defects:
      Remote MEP not receiving CCM                  : no
      Erroneous CCM received                        : no
      Cross-connect CCM received                    : no
      RDI sent by some MEP                          : no
      Some remote MEP's MAC in error state          : no
    Statistics:
      CCMs sent                                     : 36
      CCMs received out of sequence                 : 0
      LBMs sent                                     : 0
      Valid in-order LBRs received                  : 0
      Valid out-of-order LBRs received              : 0
      LBRs received with corrupted data             : 0
      LBRs sent                                     : 0
      LTMs sent                                     : 0
      LTMs received                                 : 0
      LTRs sent                                     : 0
      LTRs received                                 : 0
      Sequence number of next LTM request           : 0
      1DMs sent                                     : 0
      Valid 1DMs received                           : 0
      Invalid 1DMs received                         : 0
      Out of sync 1DMs received                     : 0
      DMMs sent                                     : 0
      Valid DMMs received                           : 0
      Invalid DMMs received                         : 0
      DMRs sent                                     : 0
      Valid DMRs received                           : 0
      Invalid DMRs received                         : 0
      LMMs sent                                     : 10
      Valid LMMs received                           : 0
      Invalid LMMs received                         : 0
      LMRs sent                                     : 0
      Valid LMRs received                           : 10
      Invalid LMRs received                         : 0
      SLMs sent                                     : 0
      Valid SLMs received                           : 0
      Invalid SLMs received                         : 0
      SLRs sent                                     : 0
      Valid SLRs received                           : 0
      Invalid SLRs received                         : 0
    Remote MEP count: 1
      Identifier    MAC address        State    Interface
          1     00:05:85:76:e5:30       ok   ge-5/0/4.11
Meaning

The Ethernet interface details and statistics are displayed. This output indicates that the ge-5/0/4.11 interface is active and its link status is up. Its maintenance domain name is md and its level is 4. The MEP identifier of the ge-5/0/4.11 interface is indicated as 2 and its direction is up. Under the statistics section, the output indicates that 10 LMMs were sent and 10 valid LMRs were received by the interface.

Example: Measuring Ethernet Frame Loss for Dual-Tagged LMM/LMR PDUs

This example illustrates how to configure Ethernet frame loss measurement (ETH-LM) for dual-tagged Loss Measurement Message (LMM)/Loss Measurement Reply (LMR) protocol data units (PDUs). By configuring ETH-LM, you can measure the Ethernet frame loss that occur in your network.

Requirements

This example uses the following hardware and software components:

  • Two MX Series 5G Universal Routing Platforms with Rev-B Dense Port Concentrators (DPCs)

  • Junos OS Release 14.2 or later

Overview and Topology

Junos OS supports Ethernet frame loss measurement (ETH-LM) between maintenance association end points (MEPs) configured on Ethernet physical or logical interfaces on Rev-B Dense Port Concentrators (DPCs) in MX Series routers. Additionally, the Y.1731 functionality supports ETH-LM only for an end-to-end connection that uses Virtual Private Wire Service (VPWS). This example illustrates how to configure ETH-LM for dual tagged LMM/LMR PDUs with input and output VLAN map configured as swap-swap.

Figure 2 shows the topology used in this example. VPWS service is configured between two MX Sereies routers, MX-PE1 and MX PE2.

Figure 2: VPWS Service Configured Between Two MX Series RoutersVPWS Service Configured Between Two MX Series Routers

MX-PE1 router has two Ethernet interfaces, ge-5/0/4 and ge-5/1/9. Virtual LAN (VLAN) is configured on ge-5/0/4 and MPLS is configured on the ge-5/1/9 interface. The ge-5/0/4.11 interface is used to configure the Layer 2 virtual circuit with MX-PE2 router. The UP MEP, mep 2, is attached to the ge-5/0/4.11 interface. The three-color policer firewall filter is also configured for the MX-PE1 router.

Similarly, MX-PE2 router has two Ethernet interfaces, ge-8/0/8 and ge-8/0/9. Virtual LAN (VLAN) is configured on ge-8/0/8 and MPLS is configured on the ge-8/0/9 interface. The ge-8/0/8.11 interface is used to configure the Layer 2 virtual circuit with MX-PE1 router. The UP MEP, mep 1, is attached to the ge-8/0/8.11 interface. The three-color policer firewall filter is also configured for the MX-PE2 router.

Configuration

CLI Quick Configuration

To quickly configure ETH-LM for dual tagged LMM/LMR PDUs, copy the following commands, remove any line breaks, and then paste the commands into the CLI of each device.

On Router PE1:

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[edit]
set interfaces ge-5/0/4 encapsulation flexible-ethernet-services
set interfaces ge-5/0/4 unit 11 encapsulation vlan-ccc
set interfaces ge-5/0/4 unit 11 layer2-policer input-three-color abc
set interfaces ge-5/0/4 unit 11 family ccc
set interfaces ge-5/1/9 enable
set interfaces ge-5/1/9 unit 0 family inet address 12.1.1.1/24
set interfaces ge-5/1/9 unit 0 family mpls
set interfaces lo0 unit 0 family inet address 4.4.4.4/32
set interfaces ge-5/0/4 flexible-vlan-tagging
set interfaces ge-5/0/4 unit 11 vlan-tags outer 2000 inner 1000
set interfaces ge-5/0/4 unit 11 input-vlan-map swap-swap
set interfaces ge-5/0/4 unit 11 input-vlan-map vlan-id 4094
set interfaces ge-5/0/4 unit 11 input-vlan-map inner-vlan-id 4093
set interfaces ge-5/0/4 unit 11 output-vlan-map swap-swap
set routing-options router-id 4.4.4.4
set protocols mpls interface all
set protocols mpls interface fxp0.0 disable
set protocols ospf area 0.0.0.0 interface all
set protocols ospf area 0.0.0.0 interface fxp0.0 disable
set protocols ldp interface all
set protocols ldp interface fxp0.0 disable
set protocols l2circuit neighbor 3.3.3.3 interface ge-5/0/4.11 virtual-circuit-id 1003
set protocols l2circuit neighbor 3.3.3.3 interface ge-5/0/4.11 no-control-word
set protocols oam ethernet connectivity-fault-management performance-monitoring delegate-server-processing
set protocols oam ethernet connectivity-fault-management maintenance-domain md level 4
set protocols oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma continuity-check interval 1s
set protocols oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 2 interface ge-5/0/4.11
set protocols oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 2 direction up
set protocols oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 2 remote-mep 1
set firewall three-color-policer abc logical-interface-policer
set firewall three-color-policer abc two-rate color-blind
set firewall three-color-policer abc two-rate committed-information-rate 10m
set firewall three-color-policer abc two-rate committed-burst-size 1500
set firewall three-color-policer abc two-rate peak-information-rate 20m
set firewall three-color-policer abc two-rate peak-burst-size 15k

On Router PE2:

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set interfaces ge-8/0/8 encapsulation flexible-ethernet-services
set interfaces ge-8/0/8 unit 11 encapsulation vlan-ccc
set interfaces ge-8/0/8 unit 11 layer2-policer input-three-color abc
set interfaces ge-8/0/8 unit 11 family ccc
set interfaces ge-8/0/9 enable
set interfaces ge-8/0/9 unit 0 family inet address 12.1.1.1/24
set interfaces ge-8/0/9 unit 0 family mpls
set interfaces ae0 unit 0 family inet
set interfaces lo0 unit 0 family inet address 3.3.3.3/32
set interfaces ge-8/0/8 flexible-vlan-tagging
set interfaces ge-8/0/8 unit 11 vlan-tags outer 2000 inner 1000
set interfaces ge-8/0/8 unit 11 input-vlan-map swap-swap
set interfaces ge-8/0/8 unit 11 input-vlan-map vlan-id 4094
set interfaces ge-8/0/8 unit 11 input-vlan-map inner-vlan-id 4093
set interfaces ge-8/0/8 unit 11 output-vlan-map swap-swap
set routing-options router-id 3.3.3.3
set protocols mpls interface all
set protocols mpls interface fxp0.0 disable
set protocols ospf area 0.0.0.0 interface all
set protocols ospf area 0.0.0.0 interface fxp0.0 disable
set protocols ldp interface all
set protocols ldp interface fxp0.0 disable
set protocols l2circuit neighbor 4.4.4.4 interface ge-8/0/8.11 virtual-circuit-id 1003
set protocols l2circuit neighbor 3.3.3.3 interface ge-8/0/8.11 no-control-word
set protocols oam ethernet connectivity-fault-management maintenance-domain md level 4
set protocols oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma continuity-check interval 1s
set protocols oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 1 interface ge-8/0/8.11
set protocols oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 1 direction up
set protocols oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 1 remote-mep 2
set firewall three-color-policer abc logical-interface-policer
set firewall three-color-policer abc two-rate color-blind
set firewall three-color-policer abc two-rate committed-information-rate 10m
set firewall three-color-policer abc two-rate committed-burst-size 1500
set firewall three-color-policer abc two-rate peak-information-rate 20m
set firewall three-color-policer abc two-rate peak-burst-size 15k

Configuring Router PE1

Step-by-Step Procedure

To configure Router PE1:

  1. Configure the interfaces.

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    [edit]
    user@PE1# edit interfaces
    [edit interfaces]
    user@PE1# set ge-5/0/4 encapsulation flexible-ethernet-services
    user@PE1# set ge-5/0/4 unit 11 encapsulation vlan-ccc
    user@PE1# set ge-5/0/4 unit 11 layer2-policer input-three-color abc
    user@PE1# set ge-5/0/4 unit 11 family ccc
    user@PE1# set ge-5/1/9 enable
    user@PE1# set ge-5/1/9 unit 0 family inet address 12.1.1.1/24
    user@PE1# set ge-5/1/9 unit 0 family mpls
    user@PE1# set lo0 unit 0 family inet address 4.4.4.4/32
    
  2. Configure the VLAN.

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    [edit interfaces]
    user@PE1# set ge-5/0/4 flexible-vlan-tagging
    user@PE1# set ge-5/0/4 unit 11 vlan-tags outer 2000 inner 1000
    user@PE1# set ge-5/0/4 unit 11 input-vlan-map swap-swap
    user@PE1# set ge-5/0/4 unit 11 input-vlan-map vlan-id 4094
    user@PE1# set ge-5/0/4 unit 11 input-vlan-map inner-vlan-id 4093
    user@PE1# set ge-5/0/4 unit 11 output-vlan-map swap-swap
    
  3. Configure the router identifier to identify the routing device.

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    [edit]
    user@PE1# edit routing-options
    [edit routing-options]
    user@PE1# set router-id 4.4.4.4
    
  4. Configure MPLS, OSPF, and LDP protocols.

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    [edit]
    user@PE1# edit protocols
    [edit protocols]
    user@PE1# set mpls interface all
    user@PE1# set mpls interface fxp0.0 disable
    user@PE1# set ospf area 0.0.0.0 interface all
    user@PE1# set ospf area 0.0.0.0 interface fxp0.0 disable
    user@PE1# set ldp interface all
    user@PE1# set ldp interface fxp0.0 disable
    
  5. Configure the Layer 2 circuit.

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    [edit protocols]
    user@PE1# set l2circuit neighbor 3.3.3.3 interface ge-5/0/4.11 virtual-circuit-id 1003
    user@PE1# set l2circuit neighbor 3.3.3.3 interface ge-5/0/4.11 no-control-word
    
  6. Configure the MEP.

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    [edit protocols]
    user@PE1# set oam ethernet connectivity-fault-management performance-monitoring delegate-server-processing
    user@PE1# set oam ethernet connectivity-fault-management maintenance-domain md level 4
    user@PE1# set oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma continuity-check interval 1s
    user@PE1# set oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 2 interface ge-5/0/4.11
    user@PE1# set oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 2 direction up
    user@PE1# set oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 2 remote-mep 1
    
  7. Configure the firewall.

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    [edit]
    user@PE1# edit firewall
    [edit firewall]
    user@PE1# set three-color-policer abc logical-interface-policer
    user@PE1# set three-color-policer abc two-rate color-blind
    user@PE1# set three-color-policer abc two-rate committed-information-rate 10m
    user@PE1# set three-color-policer abc two-rate committed-burst-size 1500
    user@PE1# set three-color-policer abc two-rate peak-information-rate 20m
    user@PE1# set three-color-policer abc two-rate peak-burst-size 15k
    
  8. Commit the configuration.

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    [edit]
    user@PE1# commit
    
Results

From configuration mode, confirm your configuration by entering the show interfaces, show protocols, show routing-options, and show firewall commands. If the output does not display the intended configuration, repeat the instructions in this example to correct the configuration.

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user@PE1# show interfaces
interfaces {
    ge-5/0/4 {
        flexible-vlan-tagging;
        encapsulation flexible-ethernet-services;
        unit 11 {
            encapsulation vlan-ccc;
            vlan-tags outer 2000 inner 1000;
            input-vlan-map {
                swap-swap;
                vlan-id 4094;
                inner-vlan-id 4093;
            }
            output-vlan-map swap-swap;
            layer2-policer {
                input-three-color abc;
            }
            family ccc;
        }
    }
    ge-5/1/9 {
        enable;
        unit 0 {
            family inet {
                address 12.1.1.1/24;
            }
            family mpls;
        }
    }
    lo0 {
        unit 0 {
            family inet {
                address 4.4.4.4/32;
            }
        }
    }
}
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user@PE1# show protocols
protocols {
    mpls {
        interface all;
        interface fxp0.0 {
            disable;
        }
    }
    ospf {
        area 0.0.0.0 {
            interface all;
            interface fxp0.0 {
                disable;
            }
        }
    }
    ldp {
        interface all;
        interface fxp0.0 {
            disable;
        }
    }
    l2circuit {
        neighbor 3.3.3.3 {
            interface ge-5/0/4.11 {
                virtual-circuit-id 1003;
                no-control-word;
            }
        }
    }
    oam {
        ethernet {
            connectivity-fault-management {
                performance-monitoring {
                    delegate-server-processing;
                }
                maintenance-domain md {
                    level 4;
                    maintenance-association ma {
                        continuity-check {
                            interval 1s;
                        }
                        mep 2 {
                            interface ge-5/0/4.11;
                            direction up;
                            remote-mep 1;
                        }
                    }
                }
            }
        }
    }
}
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user@PE1# show routing-options
routing-options {
    router-id 4.4.4.4;
}
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user@PE1# show firewall
firewall {
    three-color-policer abc {
        logical-interface-policer;
        two-rate {
            color-blind;
            committed-information-rate 10m;
            committed-burst-size 1500;
            peak-information-rate 20m;
            peak-burst-size 15k;
        }
    }
}

Configuring Router PE2

Step-by-Step Procedure

To configure Router PE2:

  1. Configure the interfaces.

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    [edit]
    user@PE2# edit interfaces
    [edit interfaces]
    user@PE2# set ge-8/0/8 encapsulation flexible-ethernet-services
    user@PE2# set ge-8/0/8 unit 11 encapsulation vlan-ccc
    user@PE2# set ge-8/0/8 unit 11 layer2-policer input-three-color abc
    user@PE2# set ge-8/0/8 unit 11 family ccc
    user@PE2# set ge-8/0/9 enable
    user@PE2# set ge-8/0/9 unit 0 family inet address 12.1.1.1/24
    user@PE2# set ge-8/0/9 unit 0 family mpls
    user@PE2# set ae0 unit 0 family inet
    user@PE2# set lo0 unit 0 family inet address 3.3.3.3/32
    
  2. Configure the VLAN.

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    [edit interfaces]
    user@PE2# set ge-8/0/8 flexible-vlan-tagging
    user@PE2# set ge-8/0/8 unit 11 vlan-tags outer 2000 inner 1000
    user@PE2# set ge-8/0/8 unit 11 input-vlan-map swap-swap
    user@PE2# set ge-8/0/8 unit 11 input-vlan-map vlan-id 4094
    user@PE2# set ge-8/0/8 unit 11 input-vlan-map inner-vlan-id 4093
    user@PE2# set ge-8/0/8 unit 11 output-vlan-map swap-swap
    
  3. Configure the router identifier to identify the routing device.

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    [edit]
    user@PE2# edit routing-options
    [edit routing-options]
    user@PE2# set router-id 3.3.3.3
    
  4. Configure MPLS, OSPF, and LDP protocols.

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    [edit]
    user@PE2# edit protocols
    [edit protocols]
    user@PE2# set mpls interface all
    user@PE2# set mpls interface fxp0.0 disable
    user@PE2# set ospf area 0.0.0.0 interface all
    user@PE2# set ospf area 0.0.0.0 interface fxp0.0 disable
    user@PE2# set ldp interface all
    user@PE2# set ldp interface fxp0.0 disable
    
  5. Configure the Layer 2 circuit.

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    [edit protocols]
    user@PE2# set l2circuit neighbor 4.4.4.4 interface ge-8/0/8.11 virtual-circuit-id 1003
    user@PE2# set l2circuit neighbor 3.3.3.3 interface ge-8/0/8.11 no-control-word
    
  6. Configure the MEP.

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    [edit protocols]
    user@PE2# set oam ethernet connectivity-fault-management maintenance-domain md level 4
    user@PE2# set oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma continuity-check interval 1s
    user@PE2# set oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 1 interface ge-8/0/8.11
    user@PE2# set oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 1 direction up
    user@PE2# set oam ethernet connectivity-fault-management maintenance-domain md maintenance-association ma mep 1 remote-mep 2
    
  7. Configure the firewall.

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    [edit]
    user@PE2# edit firewall
    [edit firewall]
    user@PE2# set three-color-policer abc logical-interface-policer
    user@PE2# set three-color-policer abc two-rate color-blind
    user@PE2# set three-color-policer abc two-rate committed-information-rate 10m
    user@PE2# set three-color-policer abc two-rate committed-burst-size 1500
    user@PE2# set three-color-policer abc two-rate peak-information-rate 20m
    user@PE2# set three-color-policer abc two-rate peak-burst-size 15k
    
  8. Commit the configuration.

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    [edit]
    user@PE2# commit
    
Results

From configuration mode, confirm your configuration by entering the show interfaces, show protocols, show routing-options, and show firewall commands. If the output does not display the intended configuration, repeat the instructions in this example to correct the configuration.

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user@PE2# show interfaces
interfaces {
    ge-8/0/8 {
        flexible-vlan-tagging;
        encapsulation flexible-ethernet-services;
        unit 11 {
            encapsulation vlan-ccc;
            vlan-tags outer 2000 inner 1000;
            input-vlan-map {
                swap-swap;
                vlan-id 4094;
                inner-vlan-id 4093;
            }
            output-vlan-map swap-swap;
            layer2-policer {
                input-three-color abc;
            }
            family ccc;
        }
    }
    ge-8/0/9 {
        unit 0 {
            family inet {
                address 12.1.1.2/24;
            }
            family mpls;
        }
    }
    ae0 {
        unit 0 {
            family inet;
        }
    }
    lo0 {
        unit 0 {
            family inet {
                address 3.3.3.3/32;
            }
        }
    }
}
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user@PE2# show protocols
protocols {
    mpls {
        interface all;
        interface fxp0.0 {
            disable;
        }
    }
    ospf {
        area 0.0.0.0 {
            interface all;
            interface fxp0.0 {
                disable;
            }
        }
    }
    ldp {
        interface all;
        interface fxp0.0 {
            disable;
        }
    }
    l2circuit {
        neighbor 4.4.4.4 {
            interface ge-8/0/8.11 {
                virtual-circuit-id 1003;
                no-control-word;
            }
        }
    }
    oam {
        ethernet {
            connectivity-fault-management {
                maintenance-domain md {
                    level 4;
                    maintenance-association ma {
                        continuity-check {
                            interval 1s;
                        }
                        mep 1 {
                            interface ge-8/0/8.11;
                            direction up;
                            remote-mep 2;
                        }
                    }
                }
            }
        }
    }
}
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user@PE2# show routing-options
routing-options {
    router-id 3.3.3.3;
}
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user@PE2# show firewall
firewall {
    three-color-policer abc {
        logical-interface-policer;
        two-rate {
            color-blind;
            committed-information-rate 10m;
            committed-burst-size 1500;
            peak-information-rate 20m;
            peak-burst-size 15k;
        }
    }
}

Verification

To start the Ethernet frame loss measurement session, issue the monitor ethernet loss-measurement maintenance-domain md maintenance-association ma mep 1 command. Frame loss is calculated by collecting the counter values applicable for ingress and egress service frames where the counters maintain a count of transmitted and received data frames between a pair of MEPs. The loss measurement statistics are retrieved as the output of the monitor ethernet loss-measurement command. You can also issue the show oam ethernet connectivity-fault-management interfaces detail ge-5/0/4.11 command to display ETH-LM statistics.

Viewing ETH-LM

Purpose

View the ETH-LM statistics.

Action

From operational mode, enter the show oam ethernet connectivity-fault-management interfaces detail ge-5/0/4.11 command.

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user@PE1> show oam ethernet connectivity-fault-management interfaces detail ge-5/0/4.11
Interface name: ge-5/0/4.11 , Interface status: Active, Link status: Up
  Maintenance domain name: md, Format: string, Level: 4
    Maintenance association name: ma, Format: string
    Continuity-check status: enabled, Interval: 1s, Loss-threshold: 3 frames
    Interface status TLV: none, Port status TLV: none
    Connection Protection TLV: no
    MEP identifier: 2, Direction: up, MAC address: 00:24:dc:9b:96:76
    MEP status: running
    Defects:
      Remote MEP not receiving CCM                  : no
      Erroneous CCM received                        : no
      Cross-connect CCM received                    : no
      RDI sent by some MEP                          : no
      Some remote MEP's MAC in error state          : no
    Statistics:
      CCMs sent                                     : 59
      CCMs received out of sequence                 : 0
      LBMs sent                                     : 0
      Valid in-order LBRs received                  : 0
      Valid out-of-order LBRs received              : 0
      LBRs received with corrupted data             : 0
      LBRs sent                                     : 0
      LTMs sent                                     : 0
      LTMs received                                 : 0
      LTRs sent                                     : 0
      LTRs received                                 : 0
      Sequence number of next LTM request           : 0
      1DMs sent                                     : 0
      Valid 1DMs received                           : 0
      Invalid 1DMs received                         : 0
      Out of sync 1DMs received                     : 0
      DMMs sent                                     : 0
      Valid DMMs received                           : 0
      Invalid DMMs received                         : 0
      DMRs sent                                     : 0
      Valid DMRs received                           : 0
      Invalid DMRs received                         : 0
      LMMs sent                                     : 10
      Valid LMMs received                           : 0
      Invalid LMMs received                         : 0
      LMRs sent                                     : 0
      Valid LMRs received                           : 10
      Invalid LMRs received                         : 0
      SLMs sent                                     : 0
      Valid SLMs received                           : 0
      Invalid SLMs received                         : 0
      SLRs sent                                     : 0
      Valid SLRs received                           : 0
      Invalid SLRs received                         : 0
    Remote MEP count: 1
      Identifier    MAC address        State    Interface
          1     00:05:85:76:e5:30       ok   ge-5/0/4.11

Meaning

The Ethernet interface details and statistics are displayed. This output indicates that the ge-5/0/4.11 interface is active and its link status is up. Its maintenance domain name is md and its level is 4. The MEP identifier of the ge-5/0/4.11 interface is indicated as 2 and its direction is up. Under the statistics section, the output indicates that 10 LMMs were sent and 10 valid LMRs were received by the interface.

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