Provisioning DWDM frequency

Prerequisites

Before provisioning DWDM frequency, the user must configure the connector breakout and apply the DCO setting to the transceiver (as described in Provisioning the DWDM coherent optic). After the DCO is enabled, and the physical optical transceiver is present in the front panel cage, the optic transceiver data shows the optic DWDM details. The provisionable frequency range is also displayed here with the show port 1/1/c1 command (see the "Model Number", "Fine Tune Range", "Fine Tune Resolu*", and "Supported Grids" fields below). To initially provision the frequency or change what was previously configured, the user must shut down or disable the 1/1/c1 connector before provisioning.

Transceiver Type   : QSFP-DD                    DCO              : Enabled
Model Number       : 3HE16565AARA01  NOK  INUIAPJHAA
TX Laser Wavelength: 1547 nm
Laser Tunability   : flex-tunable
Config Freq (MHz)  : 0                          Min Freq (MHz)   : 191300000
Oper Freq (MHz)    : not-operational            Max Freq (MHz)   : 196100000
Fine Tune Range    : 6000 MHz                   Fine Tune Resolu*: 1 MHz
Supported Grids    : 100GHz 75GHz 50GHz 25GHz 12.5GHz 6.25GHz
Diag Capable       : yes
Number of Lanes    : 1
Connector Code     : LC                         Vendor OUI       : 20:20:20
Manufacture date   : 2021/06/03                 Media            : Ethernet
Serial Number      : 11111111111
Part Number        : DP04QSDD-E30-090
Optical Compliance : 400G-ZR-Amp 400G-ZR-Unamp
Link Length support: Unknown

===============================================================================
Transceiver Digital Diagnostic Monitoring (DDM)
===============================================================================
                              Value High Alarm  High Warn   Low Warn  Low Alarm
-------------------------------------------------------------------------------
Temperature (C)               +36.0     +80.0      +75.0      +15.0       -5.0
Supply Voltage (V)             3.30      3.46       3.43       3.17       3.13
===============================================================================

===============================================================================
Transceiver Lane Digital Diagnostic Monitoring (DDM)
===============================================================================
                                 High Alarm   High Warn    Low Warn   Low Alarm
-------------------------------------------------------------------------------
Lane Tx Output Power (dBm)             0.00       -2.00      -16.00      -18.01
Lane Rx Optical Pwr (avg dBm)          2.00        0.00      -23.01      -28.24

-------------------------------------------------------------------------------
Lane ID Temp(C)/Alm       Tx Bias(mA)/Alm   Tx Pwr(dBm)/Alm   Rx Pwr(dBm)/Alm
-------------------------------------------------------------------------------
    1              -                 -            -40.00            -40.00
===============================================================================

===============================================================================
Coherent Optical Module
===============================================================================
Cfg Tx Target Power:   1.00 dBm               Present Rx Channel : N/A
Cfg Rx LOS Thresh  : -23.00 dBm               Cfg Rx Channel     : 0 (auto)

Disp Control Mode  : automatic                Sweep Start Disp   : -25500 ps/nm
Cfg Dispersion     :      0 ps/nm             Sweep End Disp     :   2000 ps/nm
CPR Window Size    : 32 symbols               Rx LOS Reaction    : squelch
Compatibility      : longHaul
Cfg Tx Power Min   : -22.90 dBm               Cfg Tx Power Max   :   4.00 dBm

Cfg Alarms         : modflt mod netrx nettx hosttx
Alarm Status       :
Defect Points      :

Rx Q Margin        :    0.0 dB                Chromatic Disp     :      0 ps/nm
SNR X Polar        :    0.0 dB                Diff Group Delay   :      0 ps
SNR Y Polar        :    0.0 dB                Pre-FEC BER        : 0.000E+00

Module State       : lowPower
Tx Turn-Up States  :
Rx Turn-Up States  :

About this task

This procedure describes how to provision the DWDM frequency.

Procedure

Configure the frequency using the following context.

By default, no frequency is configured. A frequency must be provisioned. The following example displays a frequency configuration of 194400000:

configure port 1/1/c1 dwdm frequency 194400000 (classic CLI)

Example

*A:Dut-A# configure port 1/1/c1 dwdm frequency
  - frequency <MHz>
  - no frequency

 <MHz>                : [191100000..196150000]

*A:Dut-A# configure port 1/1/c1 dwdm frequency 194400000

configure port 1/1/c1 dwdm frequency 194400000 (MD-CLI)

Example

*[pr:/configure port 1/1/c1 dwdm]
A:admin@cses-V27# frequency ?

 frequency <number>
 <number>  - <191100000..196150000>  - megahertz

    Center frequency for tunable DWDM optical interface

*[pr:/configure port 1/1/c1 dwdm]
A:admin@cses-V27# frequency 194400000

Enable frequency by configuring either of the following:

In the classic CLI, use the configure port 1/1/c1 no shutdown command to enable the connector.
In the MD-CLI, use the configure port 1/1/c1 admin-state enable command to enable the connector.

Expected outcome In the following example, the “Config Freq” and “Oper Freq” fields in the show port 1/1/c1 output reflect the frequency setting, the “Coherent Optical Module” values are present, and the “Module State” displays the “txOff” value until the connector ports are administratively set to no shutdown or set to enable. For any DWDM frequency changes, after port 1/1/c1 is administratively set to no shutdown or set to enable again, the coherent module initializes and transitions through various states as visible in the “Module State” field.

Transceiver Type   : QSFP-DD                    DCO              : Enabled
Model Number       : 3HE16565AARA01  NOK  INUIAPJHAA
TX Laser Wavelength: 1542.142 nm
Laser Tunability   : flex-tunable
Config Freq (MHz)  : 194400000                  Min Freq (MHz)   : 191300000
Oper Freq (MHz)    : 194400000                  Max Freq (MHz)   : 196100000
Fine Tune Range    : 6000 MHz                   Fine Tune Resolu*: 1 MHz
Supported Grids    : 100GHz 75GHz 50GHz 25GHz 12.5GHz 6.25GHz
Diag Capable       : yes
Number of Lanes    : 1
Connector Code     : LC                         Vendor OUI       : 7c:b2:5c
Manufacture date   : 2020/01/11                 Media            : Ethernet
Serial Number      : 111111111
Part Number        : DP04QSDD-E30-090
Optical Compliance : 400G-ZR-Amp 400G-ZR-Unamp 400G-ZR-Amp Custom (197) Custo*
Link Length support: Unknown

===============================================================================
Transceiver Digital Diagnostic Monitoring (DDM)
===============================================================================
                              Value High Alarm  High Warn   Low Warn  Low Alarm
-------------------------------------------------------------------------------
Temperature (C)               +63.0     +80.0      +75.0      +15.0       -5.0
Supply Voltage (V)             3.25      3.46       3.43       3.17       3.13
===============================================================================

===============================================================================
Transceiver Lane Digital Diagnostic Monitoring (DDM)
===============================================================================
                                 High Alarm   High Warn    Low Warn   Low Alarm
-------------------------------------------------------------------------------
Lane Tx Output Power (dBm)             0.00       -2.00      -13.00      -14.00
Lane Rx Optical Pwr (avg dBm)          2.00        0.00      -21.02      -23.01
-------------------------------------------------------------------------------
Lane ID Temp(C)/Alm       Tx Bias(mA)/Alm   Tx Pwr(dBm)/Alm   Rx Pwr(dBm)/Alm
-------------------------------------------------------------------------------
    1              -                 -            -40.00             -9.78
===============================================================================

===============================================================================
Coherent Optical Module
===============================================================================
Cfg Tx Target Power:   1.00 dBm
Cfg Rx LOS Thresh  : -23.00 dBm

Disp Control Mode  : automatic                Sweep Start Disp   : -25500 ps/nm
Cfg Dispersion     :      0 ps/nm             Sweep End Disp     :   2000 ps/nm
CPR Window Size    : 32 symbols               Rx LOS Reaction    : squelch
Compatibility      : longHaul
Cfg Tx Power Min   : -22.90 dBm               Cfg Tx Power Max   :   4.00 dBm

Cfg Alarms         : modflt mod netrx nettx hosttx
Alarm Status       :
Defect Points      :

Rx Q Margin        :    4.1 dB                Chromatic Disp     :      1 ps/nm
SNR/OSNR X Polar   :   19.2 dB / 35.7 dB      Diff Group Delay   :      3 ps
SNR/OSNR Y Polar   :   19.2 dB / 35.7 dB      Pre-FEC BER        : 3.340E-04

Module State       : txOff
Tx Turn-Up States  : init laserTurnUp laserReadyOff laserReady
                     modulatorConverge
Rx Turn-Up States  : init laserReady waitForInput adcSignal opticalLoc
                     demodLock

To the enable the laser and have the optic reach the “ready” state, the connector port as per the configured breakout must be enabled. Configure each connector port to be administratively set to no shutdown or set to enable as follows:
- In the classic CLI, use the configure port 1/1/c1 no shutdown command to enable each connector port.
- In the MD-CLI, use the configure port 1/1/c1 admin-state enable command to enable each connector port.