Navigating the Shadows of Dark Fiber Connectivity¶

Jad Dimabuyu - 11/21/2024

Juniper's Converged Optical Routing Architecture -- Unamplified Links. Explore the solution for High-Capacity Transport using 400G OpenZR+ Optics.

Introduction¶

This TechPost will cover configurations, monitoring, and test plans for provisioning 400G OpenZR+ Optics. In designing a Dark Fiber Network, it is important to do link budget calculations. Network operators typically require margins in anticipation of additional splices due to fiber breaks and insertion of repair cables. Do we really need this margin? Let's figure out from the tests shown in this article.

Topology¶

The topology will use JCO400-QDD-ZR-M-HP as transceivers; PTX10001-36MR, ACX7100-48L, and MX304 as routers; and ADTRAN 8CSM+#19430-#19290 as Mux/DeMux. A 75 km fiber optic cable will be used and a Variable Optical Attenuator (VOA) to emulate a longer fiber optic cable.

Traffic will go through a snake topology. Router ports are interconnected using l2circuit local switching. At the end of the snake on PTX, the interface is configured as host-side output loopback. In this loopback mode, traffic will be received by the transceiver's DSP and sent back to the media interface again. These loopbacks are defined by CMIS 4.0 and above.

The traffic flow is illustrated below.

Physical Topology - Traffic Flow¶

Logical Topology - Traffic Flow¶

Power Propagation Calculation¶

Calculation of the Rx Power:

Rx Power per lambda (PTX) = Tx Power (per lambda) - Sum*losses
Rx Power per lambda (PTX) = Tx Power (per lambda) - Mux Loss - VOA Loss - Span Loss -- DeMux Loss
Rx Power per lambda (PTX) = 0dBm - 2dB - 1dB - 0.19dB/km * 75k* - 2dB
Rx Power per lambda (PTX) = 0dBm - 2dB - 1dB - 14.25dB - 2dB
Rx Power per lambda (PTX) = 0dBm - 19.25dB
Rx Power per lambda (PTX) = -19.25dBm

The PTX Side will expect close to -19.25dBm per channel. Not all channels will have the same Rx Power, but it will be close to the calculated value. The Rx Power on all channels will be balanced by setting the initial target Rx Power to -20dBm. This is done by changing the Tx Power per channel on the MX and ACX side.

Channel Plan¶

ADTRAN 8CSM+#19430-#19290 is a passive filter with fixed frequencies on each port.

ADTRANPort	Frequency	Wavelength	PTX10001-36MRInterface	MX304Interface	ACX7100-48LInterface
C1	194.300 THz	1542.94 nm	et-0/0/0	et-0/1/6	-
C2	194.100 THz	1544.53 nm	et-0/0/2	et-0/1/8	-
C3	193.900 THz	1546.12 nm	et-0/0/8	-	et-0/0/48
C4	193.700 THz	1547.72 nm	et-0/0/10	-	et-0/0/49

Supported 400G OpenZR+ Clients¶

As of writing this article, JCO400-QDD-ZR-M-HP supports the following 400G OpenZR+ and 400ZR OIF modes. More Host and Media Modes might be supported in the future via Firmware Upgrade.

Host Interface	FEC	Modulation	Symbol Baud Rate	Media Interface	MSA Compliance
1x400G	CFEC	16QAM	59,843,750,000	400ZR	OIF 400ZR IA
4x100G	CFEC	16QAM	59,843,750,000	400ZR	OIF 400ZR IA
1x400G	OFEC	16QAM	60,138,546,798	ZR-400-OFEC-16QAM	OpenZR+ MSA
4x100G	OFEC	16QAM	60,138,546,798	ZR-400-OFEC-16QAM	OpenZR+ MSA
3x100G	OFEC	8QAM	60,138,546,798	ZR-300-OFEC-8QAM	OpenZR+ MSA
2x100G	OFEC	QPSK	60,138,546,798	ZR-200-OFEC-QPSK	OpenZR+ MSA
1x100G	OFEC	QPSK	30,069,273,399	ZR-100-OFEC-QPSK	OpenZR+ MSA

In this post, we will test the different OpenZR+ Media Interfaces namely: ZR-400-OFEC-16QAM, ZR-300-OFEC-8QAM, ZR-200-OFEC-QPSK, and ZR-100-OFEC-QPSK. Each Media Interface will have different RX Sensitivity due to the different modulation and/or symbol rates.

Router Configuration¶

This section will cover the configurations needed to deploy ZR/ZR+ transceivers. For the configurations used for testing, refer to the Extensive Router Configuration Section of this article.

Setting Port Speed¶

Junos will automatically set the Media Interface according to the configured speed and number of sub-ports.

Media Interface	PORT-SPEED	NUMBER-OF-CHANNELS
ZR-400-OFEC-16QAM	400g	N/A
ZR-400-OFEC-16QAM	100g	4
ZR-300-OFEC-8QAM	100g	3
ZR-200-OFEC-QPSK	100g	2
ZR-100-OFEC-QPSK	100g	N/A

ACX EVO Series and PTX EVO Series Routers except PTX10003¶

interfaces {
    $INTERFACE_NAME$ {
        speed $PORT-SPEED$;
        number-of-sub-ports $NUMBER-OF-CHANNELS$;              #Exclude if N/A
    }
}

MX Series Routers and PTX10003¶

chassis {
    fpc $FPC$ {
        pic $PIC$ {
            port $PORT$ {
                speed $PORT-SPEED$;
                number-of-sub-ports $NUMBER-OF-CHANNELS$;      #Exclude if N/A
            }
        }
    }
}

Setting Optics Options¶

Use the wavelength specified in the Channel Plan

interfaces {
    $INTERFACE_NAME$ {
        optics-options {
             wavelength $WAVELENGTH$;
             tx-power $TX-POWER$;
        }     
    }
}

Note: For channelized interfaces, optics-options are configured on the first sub-port (et-x/y/z:0) NOT on the parent port (et-x/y/z).

Interconnecting Interfaces¶

interfaces {
    $INTERFACE_START$ {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
        }
    }
    $INTERFACE_END$ {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
        }
    }
}
protocols {
    l2circuit {
        local-switching {
            interface $INTERFACE_START$.0 {
                end-interface {
                    interface $INTERFACE_END$.0;
                }
            }
        }
    }
    mpls {
        interface all;
    }
}

Configuring CMIS Loopback¶

There are four Loopback Types defined by CMIS. For details about these Loopback Types, read CMIS 4.0 - Section 8.10.1.

interfaces {
    $INTERFACE_NAME$ {
        optics-options {
            loopback {
                loopbacktype $LOOPBACK-TYPE$;
           # options are host-side-out, host-side-in, media-side-out, media-side-in
            }
        }    
    }
}

Test Procedures¶

The transceivers under test are the ones inserted in PTX10001-36MR. Initially, the TX Power on MX304 and ACX7100-48L will be adjusted to have a target Rx Power of -20dBm.

A Python script is set up to run every 15 minutes (XX:00, XX:15, XX:30, XX:45). The script will start at 0dB attenuation. The script will capture the Versatile Diagnostics Monitoring (VDM) or Performance Monitoring (PM) from all interfaces being tested at the end of every 15-minute interval.

After capturing the data, the script will increase the attenuation by 0.5dB, capture the data at the end of the 15-minute interval, and repeat until all channels are down.

The captured VDM/PM will be the average Pre-FEC BER, Uncorrected FER, and Rx Power. The captured data will be saved on InfluxDB and visualized by Grafana. This is based on IPoDWDM-TIG. The Python script and Grafana Dashboard were modified for the test procedures.

For more information on how the router collects VDM please refer to the More Information Section of this article.

Results¶

Columns highlighted yellow indicate that the Rx Power is below the advertised Rx Sensitivity. The column highlighted ** in red ** indicates that the channel is down.

For brevity, only et-0/0/8, the worst-performing transceiver is shown. For the rest of the results, go to the "Extensive Results" section of this article.

1x400GE - ZR-400-OFEC-16QAM Results¶

For the ZR-400-OFEC-16QAM Media Interface, the link was lost at -26dBm. This is 3dB lower than the advertised Rx Sensitivity.

Figure 5: 1x400GE - ZR-400-OFEC-16QAM Results for et-0/0/8

3x100GE - ZR-300-OFEC-8QAM Results¶

For the ZR-300-OFEC-8QAM Media Interface, the link was lost at -29dBm. This is 3dB lower than the advertised Rx Sensitivity.

2x100GE - ZR-200-OFEC-QPSK Results¶

For the ZR-200-OFEC-QPSK Media Interface, the link was lost at -33.5dBm. This is 3.5dB lower than the advertised Rx Sensitivity.

1x100GE - ZR-100-OFEC-QPSK Results¶

For the ZR-100-OFEC-QPSK Media Interface, the link was lost at -37dBm. This is 5dB lower than the advertised Rx Sensitivity.

Results Summary¶

Media Interface	Advertised Rx Sensitivity and Q-Margin	Measured Rx Sensitivity	Rx Margin
ZR-400-OFEC-16QAM	-23.0 dBm with >1.5 dB Q-Margin	-26.0 dBm	3.0 dB
ZR-300-OFEC-8QAM	-26.0 dBm with >2.5 dB Q-Margin	-29.0 dBm	3.0 dB
ZR-200-OFEC-QPSK	-30.0 dBm with >3.0 dB Q-Margin	-33.5 dBm	3.5 dB
ZR-100-OFEC-QPSK	-32.0 dBm with >5.0 dB Q-Margin	-37.0 dBm	5.0 dB

In conclusion, it is recommended to design at the advertised Rx Sensitivity. As evidenced by the testing, margins are already included.

More Information¶

Mux/Demux¶

Mux/DeMux or Multiplexer/Demultiplexer is a passive optical component that is used to aggregate multiple WDM signals into a single pair of fiber optic cables. The multiplexer component aggregates multiple wavelengths of light into a single fiber. The demultiplexer separates them back to separate wavelengths. For example, ADTRAN 8CSM+#19430-#19290 is an 8-channel Mux/DeMux with 200GHz Grid spacing. It can carry 3.2Tbps using 400G transceivers or 6.4Tbps using 800G transceivers. This component has a 2dB Insertion Loss.

Performance Monitoring (PM) / Versatile Diagnostics Monitoring (VDM)¶

The transceivers have a feature called Versatile Diagnostics Monitoring. VDM parameters are observables that are useful for diagnostics and performance monitoring. The router polls the transceivers every second. The router then stores the measurements into two bins: a 15-minute bin, and a 1-day bin. Customizable interval bins might be supported in later releases.

The 15-minute bin begins at the 00th, 15th, 30th, and 45th of the hour. The 1-day bin begins at 00:00-UTC. These bins will have the maximum, minimum, and average values for the whole bin's interval. The 15-minute average values are used for the tests done in this article.

Dashboards can be created to visualize these PM metrics. An example is this IPoDWDM-TIG.

Q-Value and Q-Margin¶

Other PM metrics used in this article are Q-Value and Q-Margin. It is a metric to measure the quality of an optical link. It is directly calculated from the Pre-FEC BER.

The Q-Value and Q-Margin are manually calculated by the Python Script used in this test as the transceiver does not support these PM metrics yet. These will be supported when the transceivers are upgraded to support C-CMIS 1.3.

The following formulas are used to compute the Q-Value and Q-Margin (from https://www.oiforum.com/wp-content/uploads/OIF-C-CMIS-01.3.pdf and https://www.itu.int/itu-t/recommendations/rec.aspx?rec=16153)

Qvalue = 20log10 (sqrt2erf *-1 (1-2BER*) )
Qmargin = Qvalue - Qvalue@FECThreshold FEC Threshold for OFEC is 2.00E-2
Qmargin = Qvalue - 20log10 (sqrt2erf *-1 (1-22.00x10-2 ) )
Qmargin = Qvalue - 6.25dB

Link Budget¶

The following formula can be used to calculate the distances that can be achieved.

JCO400-QDD-ZR-M-HP has Tx Power = 0dBm and 4 different Rx Sensitivities depending on the Media Interface mode used.

ZR-400-OFEC-16QAM has RX Sensitivity of -23dBm,
ZR-300-OFEC-8QAM is -26dBm,
ZR-200-OFEC-QPSK is -30dBm,
ZR-100-OFEC-QPSK is -32dBm.

Mux Loss and DeMux Loss vary by the number of channels. Typically, the Mux and DeMux losses are equal. 8-channel mux/demux typically have 2dB loss, 48-channel mux/demux typically have 5.5dB loss, and 64-channel mux/demux typically have 6.5dB loss.

As a guidance, the below table shows the distances that can be achieved using different combinations of numbers of channels and media interface modes.

Let: Fiber Loss Coefficient = 0.25dB/km, Margin = 0

Number of channels	ZR-400-OFEC-16QAM	ZR-300-OFEC-8QAM	ZR-200-OFEC-QPSK	ZR-100-OFEC-QPSK
1-channel (no mux/demux)	92km	104km	120km	128km
8-channels	76km	88km	104km	112km
48-channels	48km	60km	76km	84km
64-channels	40km	52km	68km	76km

Extensive Results¶

1x400GE -- ZR-400-OFEC-16QAM Results¶

Figure 15: et-0/0/2 - 1x400GE -- ZR-400-OFEC-16QAM Results

Figure 17: et-0/0/8 - 1x400GE -- ZR-400-OFEC-16QAM Results

Figure 19: et-0/0/10 - 1x400GE -- ZR-400-OFEC-16QAM Results

3x100GE -- ZR-300-OFEC-8QAM Results¶

Figure 23: et-0/0/2 - 3x100GE -- ZR-300-OFEC-8QAM Results

Figure 25: et-0/0/8 - 3x100GE -- ZR-300-OFEC-8QAM Results

Figure 27: et-0/0/10 - 3x100GE -- ZR-300-OFEC-8QAM Results

2x100GE -- ZR-200-OFEC-QPSK Results¶

Figure 31: et-0/0/2 - 2x100GE -- ZR-200-OFEC-QPSK Results

Figure 33: et-0/0/8 - 2x100GE -- ZR-200-OFEC-QPSK Results

Figure 35: et-0/0/10 - 2x100GE -- ZR-200-OFEC-QPSK Results

1x100GE -- ZR-100-OFEC-QPSK Results¶

Figure 39: et-0/0/2 - 1x100GE -- ZR-100-OFEC-QPSK Results

Figure 41: et-0/0/8 - 1x100GE -- ZR-100-OFEC-QPSK Results

Figure 43: et-0/0/10 - 1x100GE -- ZR-100-OFEC-QPSK Results

Extensive Router Configurations¶

1x400GE -- ZR-400-OFEC-16QAM Configuration¶

PTX10001-36MR Configuration for Interface Bring-Up

interfaces {
    et-0/0/0 {
        description "TO ADTRAN C1 PORT";
        speed 400g;
        optics-options {
            wavelength 1542.94;
            tx-power 0;
        }
    }
    et-0/0/2 {
    description "TO ADTRAN C2 PORT";
        speed 400g;
        optics-options {
            wavelength 1544.53;
            tx-power 0;
        }
    }
    et-0/0/8 {
    description "TO ADTRAN C3 PORT";
        speed 400g;
        optics-options {
            wavelength 1546.12;
            tx-power 0;
        }
    }
    et-0/0/10 {
    description "TO ADTRAN C4 PORT";
        speed 400g;
        optics-options {
            wavelength 1547.72;
            tx-power 0;
        }
    }
    et-0/2/10 {
        description "TO SPIRENT";
        speed 400g;
    }
}

MX304 Configuration for Interface Bring-Up

chassis {
    fpc 0 {
        pic 1 {
            port 6 {
                speed 400g;
            }
            port 8 {
                speed 400g;
            }
        }
    }
}

interfaces {
    et-0/1/6 {
    description "TO ADTRAN C1 PORT";
        optics-options {
            wavelength 1542.94;
            tx-power -0.2;
        }
    }
    et-0/1/8 {
    description "TO ADTRAN C2 PORT";
        optics-options {
            wavelength 1544.53;
            tx-power -0.6;
        }
    }
}

ACX7100-48L Configuration for Interface Bring-Up

interfaces {
    et-0/0/48 {
    description "TO ADTRAN C3 PORT";
        speed 400g;
        optics-options {
            wavelength 1546.12;
            tx-power -0.6;
        }
    }
    et-0/0/49 {
    description "TO ADTRAN C4 PORT";
        speed 400g;
        optics-options {
            wavelength 1547.72;
            tx-power -0.6;
        }
    }
}

PTX10001-36MR Configuration for Traffic Flow

interfaces {
    et-0/0/0 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/2 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/8 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/10 {
        optics-options {
            loopback {
                loopbacktype host-side-out;
            }
        }    
 }
    et-0/2/10 {
    encapsulation ethernet-ccc;
        unit 0 {
            family ccc;
        }
    }
}
protocols {
    l2circuit {
        local-switching {
            interface et-0/2/10.0 {
                end-interface {
                    interface et-0/0/0.0;
                }
            }
            interface et-0/0/2.0 {
                end-interface {
                    interface et-0/0/8.0;
                }
            }
        }
    }
    mpls {
        interface all;
    }
}

MX304 Configuration for Traffic Flow

interfaces {
    et-0/1/6 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/1/8 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
}
protocols {
    l2circuit {
        local-switching {
            interface et-0/1/6.0 {
                end-interface {
                    interface et-0/1/8.0;
                }
            }
        }
    }
    mpls {
        interface all;
    }
}

ACX7100-48L Configuration for Traffic Flow

interfaces {
    et-0/0/48 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/49 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
}
protocols {
    l2circuit {
        local-switching {
            interface et-0/0/48.0 {
                end-interface {
                    interface et-0/0/49.0;
                }
            }
        }
    }
    mpls {
        interface all;
    }
}

3x100GE -- ZR-300-OFEC-8QAM Configuration¶

PTX10001-36MR Configuration for Interface Bring-Up

interfaces {
    et-0/0/0 {
        description "TO ADTRAN C1 PORT";
        speed 100g;
    number-of-sub-ports 3;
    }
    et-0/0/0:0 {
        optics-options {
            wavelength 1542.94;
            tx-power 0;
        }
    }
    et-0/0/2 {
        description "TO ADTRAN C2 PORT";
        speed 100g;
    number-of-sub-ports 3;
    }
    et-0/0/2:0 {
        optics-options {
            wavelength 1544.53;
            tx-power 0;
        }
    }
    et-0/0/8 {
        description "TO ADTRAN C3 PORT";
        speed 100g;
    number-of-sub-ports 3;
    }
    et-0/0/8:0 {
        optics-options {
            wavelength 1546.12;
            tx-power 0;
        }
    }
    et-0/0/10 {
        description "TO ADTRAN C4 PORT";
        speed 100g;
    number-of-sub-ports 3;
    }
    et-0/0/10:0 {
        optics-options {
            wavelength 1547.72;
            tx-power 0;
        }
    }
    et-0/2/10 {
        description "TO SPIRENT";
        speed 100g;
        number-of-sub-ports 4;
    }
}

Note: For channelized interfaces, optics-options are configured on the first sub-port NOT on the parent port.

MX304 Configuration for Interface Bring-Up

chassis {
    fpc 0 {
        pic 1 {
            port 6 {
                speed 100g;
                number-of-sub-ports 3;
            }
            port 8 {
                speed 100g;
                number-of-sub-ports 3;
            }
        }
    }
}

interfaces {
    et-0/1/6:0 {
    description "TO ADTRAN C1 PORT";
        optics-options {
            wavelength 1542.94;
            tx-power -0.2;
        }
    }
    et-0/1/8:0 {
    description "TO ADTRAN C2 PORT";
        optics-options {
            wavelength 1544.53;
            tx-power -0.6;
        }
    }
}

Note 1: For MX Series and PTX10003, the speed and number-of-sub-ports are configured on the chassis level rather than the interface level. The optics-options are still configured on the interface level.

Note 2: For channelized interfaces, optics-options are configured on the first sub-port NOT on the parent port.

ACX7100-48L Configuration for Interface Bring-Up

interfaces {
    et-0/0/48 {
    description "TO ADTRAN C3 PORT";
        speed 100g;
        number-of-sub-ports 3;
    }
    et-0/0/48:0 {
        optics-options {
            wavelength 1546.12;
            tx-power -0.6;
        }
    }
    et-0/0/49 {
    description "TO ADTRAN C4 PORT";
        speed 100g;
        number-of-sub-ports 3;
    }
    et-0/0/49:0 {
        optics-options {
            wavelength 1547.72;
            tx-power -0.6;
        }
    }
}

Note: For channelized interfaces, optics-options are configured on the first sub-port NOT on the parent port.

PTX10001-36MR Configuration for Traffic Flow

interfaces {
    et-0/0/0:0 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/0:1 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/0:2 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/2:0 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/2:1 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/2:2 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/8:0 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/8:1 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/8:2 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/10:0 {
        optics-options {
            loopback {
                loopbacktype host-side-out;
            }
        }    
 }
    et-0/0/10:1 {
        optics-options {
            loopback {
                loopbacktype host-side-out;
            }
        }    
 }
    et-0/0/10:2 {
        optics-options {
            loopback {
                loopbacktype host-side-out;
            }
        }    
 }
    et-0/2/10:0 {
    encapsulation ethernet-ccc;
        unit 0 {
            family ccc;
        }
    }
    et-0/2/10:1 {
    encapsulation ethernet-ccc;
        unit 0 {
            family ccc;
        }
    }
    et-0/2/10:2 {
    encapsulation ethernet-ccc;
        unit 0 {
            family ccc;
        }
    }
}
protocols {
    l2circuit {
        local-switching {
            interface et-0/2/10:0.0 {
                end-interface {
                    interface et-0/0/0:0.0;
                }
            }
            interface et-0/2/10:1.0 {
                end-interface {
                    interface et-0/0/0:1.0;
                }
            }
            interface et-0/2/10:2.0 {
                end-interface {
                    interface et-0/0/0:2.0;
                }
            }
            interface et-0/0/2:0.0 {
                end-interface {
                    interface et-0/0/8:0.0;
                }
            }
            interface et-0/0/2:1.0 {
                end-interface {
                    interface et-0/0/8:1.0;
                }
            }
            interface et-0/0/2:2.0 {
                end-interface {
                    interface et-0/0/8:2.0;
                }
            }
        }
    }
    mpls {
        interface all;
    }
}

MX304 Configuration for Traffic Flow

interfaces {
    et-0/1/6:0 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/1/6:1 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/1/6:1 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/1/8:0 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/1/8:1 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/1/8:2 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
}
protocols {
    l2circuit {
        local-switching {
            interface et-0/1/6:0.0 {
                end-interface {
                    interface et-0/1/8:0.0;
                }
            }
            interface et-0/1/6:1.0 {
                end-interface {
                    interface et-0/1/8:1.0;
                }
            }
            interface et-0/1/6:2.0 {
                end-interface {
                    interface et-0/1/8:2.0;
                }
            }
        }
    }
    mpls {
        interface all;
    }
}

ACX7100-48L Configuration for Traffic Flow

interfaces {
    et-0/0/48:0 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/48:1 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/48:2 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/49:0 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/49:1 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }

    et-0/0/49:2 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
}
protocols {
    l2circuit {
        local-switching {
            interface et-0/0/48:0.0 {
                end-interface {
                    interface et-0/0/49:0.0;
                }
            }
            interface et-0/0/48:1.0 {
                end-interface {
                    interface et-0/0/49:1.0;
                }
            }
            interface et-0/0/48:2.0 {
                end-interface {
                    interface et-0/0/49:2.0;
                }
            }
        }
    }
    mpls {
        interface all;
    }
}

2x100GE -- ZR-200-OFEC-QPSK Configuration¶

PTX10001-36MR Configuration for Interface Bring-Up

interfaces {
    et-0/0/0 {
        description "TO ADTRAN C1 PORT";
        speed 100g;
    number-of-sub-ports 2;
    }
    et-0/0/0:0 {
        optics-options {
            wavelength 1542.94;
            tx-power 0;
        }
    }
    et-0/0/2 {
        description "TO ADTRAN C2 PORT";
        speed 100g;
    number-of-sub-ports 2;
    }
    et-0/0/2:0 {
        optics-options {
            wavelength 1544.53;
            tx-power 0;
        }
    }
    et-0/0/8 {
        description "TO ADTRAN C3 PORT";
        speed 100g;
    number-of-sub-ports 2;
    }
    et-0/0/8:0 {
        optics-options {
            wavelength 1546.12;
            tx-power 0;
        }
    }
    et-0/0/10 {
        description "TO ADTRAN C4 PORT";
        speed 100g;
    number-of-sub-ports 2;
    }
    et-0/0/10:0 {
        optics-options {
            wavelength 1547.72;
            tx-power 0;
        }
    }
    et-0/2/10 {
        description "TO SPIRENT";
        speed 100g;
        number-of-sub-ports 4;
    }
}

Note: For channelized interfaces, optics-options are configured on the first sub-port NOT on the parent port.

MX304 Configuration for Interface Bring-Up

chassis {
    fpc 0 {
        pic 1 {
            port 6 {
                speed 100g;
                number-of-sub-ports 2;
            }
            port 8 {
                speed 100g;
                number-of-sub-ports 2;
            }
        }
    }
}

interfaces {
    et-0/1/6:0 {
    description "TO ADTRAN C1 PORT";
        optics-options {
            wavelength 1542.94;
            tx-power -0.2;
        }
    }
    et-0/1/8:0 {
    description "TO ADTRAN C2 PORT";
        optics-options {
            wavelength 1544.53;
            tx-power -0.6;
        }
    }
}

Note 1: For MX Series and PTX10003, the speed and number-of-sub-ports are configured on the chassis level rather than the interface level. The optics-options are still configured on the interface level.

Note 2: For channelized interfaces, optics-options are configured on the first sub-port NOT on the parent port.

ACX7100-48L Configuration for Interface Bring-Up

interfaces {
    et-0/0/48 {
    description "TO ADTRAN C3 PORT";
        speed 100g;
        number-of-sub-ports 2;
    }
    et-0/0/48:0 {
        optics-options {
            wavelength 1546.12;
            tx-power -0.6;
        }
    }
    et-0/0/49 {
    description "TO ADTRAN C4 PORT";
        speed 100g;
        number-of-sub-ports 2;
    }
    et-0/0/49:0 {
        optics-options {
            wavelength 1547.72;
            tx-power -0.6;
        }
    }
}

Note: For channelized interfaces, optics-options are configured on the first sub-port NOT on the parent port.

PTX10001-36MR Configuration for Traffic Flow

interfaces {
    et-0/0/0:0 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/0:1 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/2:0 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/2:1 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/8:0 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/8:1 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/10:0 {
        optics-options {
            loopback {
                loopbacktype host-side-out;
            }
        }    
 }
    et-0/0/10:1 {
        optics-options {
            loopback {
                loopbacktype host-side-out;
            }
        }    
 }
    et-0/2/10:0 {
    encapsulation ethernet-ccc;
        unit 0 {
            family ccc;
        }
    }
    et-0/2/10:1 {
    encapsulation ethernet-ccc;
        unit 0 {
            family ccc;
        }
    }
}
protocols {
    l2circuit {
        local-switching {
            interface et-0/2/10:0.0 {
                end-interface {
                    interface et-0/0/0:0.0;
                }
            }
            interface et-0/2/10:1.0 {
                end-interface {
                    interface et-0/0/0:1.0;
                }
            }
            interface et-0/0/2:0.0 {
                end-interface {
                    interface et-0/0/8:0.0;
                }
            }
            interface et-0/0/2:1.0 {
                end-interface {
                    interface et-0/0/8:1.0;
                }
            }
        }
    }
    mpls {
        interface all;
    }
}

MX304 Configuration for Traffic Flow

interfaces {
    et-0/1/6:0 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/1/6:1 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/1/8:0 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/1/8:1 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
}
protocols {
    l2circuit {
        local-switching {
            interface et-0/1/6:0.0 {
                end-interface {
                    interface et-0/1/8:0.0;
                }
            }
            interface et-0/1/6:1.0 {
                end-interface {
                    interface et-0/1/8:1.0;
                }
            }
        }
    }
    mpls {
        interface all;
    }
}

ACX7100-48L Configuration for Traffic Flow

interfaces {
    et-0/0/48:0 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/48:1 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/49:0 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/49:1 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
}
protocols {
    l2circuit {
        local-switching {
            interface et-0/0/48:0.0 {
                end-interface {
                    interface et-0/0/49:0.0;
                }
            }
            interface et-0/0/48:1.0 {
                end-interface {
                    interface et-0/0/49:1.0;
                }
            }
        }
    }
    mpls {
        interface all;
    }
}

1x100GE -- ZR-100-OFEC-QPSK Configuration¶

PTX10001-36MR Configuration for Interface Bring-Up

interfaces {
    et-0/0/0 {
        description "TO ADTRAN C1 PORT";
        speed 100g;
        optics-options {
            wavelength 1542.94;
            tx-power 0;
        }
    }
    et-0/0/2 {
    description "TO ADTRAN C2 PORT";
        speed 100g;
        optics-options {
            wavelength 1544.53;
            tx-power 0;
        }
    }
    et-0/0/8 {
    description "TO ADTRAN C3 PORT";
        speed 100g;
        optics-options {
            wavelength 1546.12;
            tx-power 0;
        }
    }
    et-0/0/10 {
    description "TO ADTRAN C4 PORT";
        speed 100g;
        optics-options {
            wavelength 1547.72;
            tx-power 0;
        }
    }
    et-0/2/10 {
        description "TO SPIRENT";
        speed 100g;
        number-of-sub-ports 4;
    }
}

MX304 Configuration for Interface Bring-Up

chassis {
    fpc 0 {
        pic 1 {
            port 6 {
                speed 100g;
            }
            port 8 {
                speed 100g;
            }
        }
    }
}

interfaces {
    et-0/1/6 {
    description "TO ADTRAN C1 PORT";
        optics-options {
            wavelength 1542.94;
            tx-power -0.2;
        }
    }
    et-0/1/8 {
    description "TO ADTRAN C2 PORT";
        optics-options {
            wavelength 1544.53;
            tx-power -0.6;
        }
    }
}

Note: For MX Series and PTX10003, the speed and number-of-sub-ports are configured on the chassis level rather than the interface level. The optics-options are still configured on the interface level.

ACX7100-48L Configuration for Interface Bring-Up

interfaces {
    et-0/0/48 {
    description "TO ADTRAN C3 PORT";
        speed 100g;
        optics-options {
            wavelength 1546.12;
            tx-power -0.6;
        }
    }
    et-0/0/49 {
    description "TO ADTRAN C4 PORT";
        speed 100g;
        optics-options {
            wavelength 1547.72;
            tx-power -0.6;
        }
    }
}

PTX10001-36MR Configuration for Traffic Flow

interfaces {
    et-0/0/0 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/2 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/8 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/10 {
        optics-options {
            loopback {
                loopbacktype host-side-out;
            }
        }    
 }
    et-0/2/10:0 {
    encapsulation ethernet-ccc;
        unit 0 {
            family ccc;
        }
    }
}
protocols {
    l2circuit {
        local-switching {
            interface et-0/2/10:0.0 {
                end-interface {
                    interface et-0/0/0.0;
                }
            }
            interface et-0/0/2.0 {
                end-interface {
                    interface et-0/0/8.0;
                }
            }
        }
    }
    mpls {
        interface all;
    }
}

MX304 Configuration for Traffic Flow

interfaces {
    et-0/1/6 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/1/8 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
}
protocols {
    l2circuit {
        local-switching {
            interface et-0/1/6.0 {
                end-interface {
                    interface et-0/1/8.0;
                }
            }
        }
    }
    mpls {
        interface all;
    }
}

ACX7100-48L Configuration for Traffic Flow

interfaces {
    et-0/0/48 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
    et-0/0/49 {
        encapsulation ethernet-ccc;
        unit 0 {
            family ccc;        
    }
    }
}
protocols {
    l2circuit {
        local-switching {
            interface et-0/0/48.0 {
                end-interface {
                    interface et-0/0/49.0;
                }
            }
        }
    }
    mpls {
        interface all;
    }
}

Useful links¶

Glossary¶

16QAM - 16-Quadrature Modulation
8QAM - 8-Quadrature Modulation
BER -- Bit Error Rate
CCC - Circuit cross-connect
CMIS -- Common Management Interface Specification
DSP -- Digital Signal Processor
FER -- Frame Error Ratio
GE -- Gigabit Ethernet
IA - Implementation Agreement
L2circuit- Layer 2 circuit
MPLS - Multiprotocol Label Switching
MSA -- Multi Source Agreement
OFEC -- Open FEC / Open Forward Error Correction
OIF -- Optical Internetworking Forum
PM -- Performance Monitoring
Q-Margin -- Quality Margin
QPSK - Quadrature Phase Shift Keying
Q-Value -- Quality Value or Quality Factor
Rx -- Receive
Tx -- Transmit
VDM - Versatile Diagnostics Monitoring
VOA -- Variable Optical Attenuator

Acknowledgements¶

Moran Roth
Nicolas Fevrier
Dirk van den Borne
Charles Park
Ryan Holmes