Configuration Guide for Cisco NCS 1004, IOS XR Release 25.x.x

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Configuration Guide for Cisco NCS 1004, IOS XR Release 25.x.x

Chromatic dispersion overview

Updated: July 31, 2026

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This section explains chromatic dispersion (CD) configuration on optics controllers for the NCS 1004.

A chromatic dispersion value is an optical transmission measurement that

  • quantifies how much a light pulse spreads as it travels through fiber,

  • is influenced by differences in the speed of several wavelengths within the signal, and

  • defines hardware thresholds for automated monitoring and alarm generation.

You can configure chromatic dispersion on optics controllers. When you configure the maximum and minimum values for chromatic dispersion for any data rate, ensure the minimum difference between the configured values is equal to or greater than 1500 ps/nm.

This table lists the default CD search range.

Table 1. Default CD search range

Data Rate

BPS

Card Support

Default CD Search Range

200G to 500G

BPS < = 3

1.2T, 1.2TL

-10,000 to 100,000 ps/nm

3 < BPS <= 4

1.2T, 1.2TL

-10,000 to 80,000 ps/nm

4 < BPS <=5

1.2T

-5,000 to 20,000 ps/nm

600G

BPS=5.2578125

1.2T

-2000 to 2,000 ps/nm

400G for 400G CFP2 DCO

BPS=4

OTN-XP

-24,000 to 24,000 ps/nm

400GE for ZRP

BPS=4

OTN-XP

For CFEC, -2,400 to 2,400 ps/nm

For OFEC, -13,000 to 13,000 ps/nm
100G

BPS <= 3

2-QDD-C

-10000 to +100000 ps/nm

200G to 300G

BPS <= 3

2-QDD-C

-10000 to +100000 ps/nm

3> BPS =4

-10000 to +80000 ps/nm

4> BPS =5

-5000 to +200000 ps/nm

5> BPS =6

-5000 to +100000 ps/nm

400G

BPS = 4

2-QDD-C

-10000 to +80000 ps/nm

4> BPS =5

-5000 to +20000 ps/nm

5> BPS =6

-5000 to +10000 ps/nm

400GE for ZRP

BPS=4

QXP

For CFEC, -2,400 to 2,400 ps/nm

For OFEC, -160000 to 160000 ps/nm
Note

The cd-min and cd-max values must be set for BPS values that are greater than 4 in the 1.2T card.

Note

When the user provisions the cd-min and cd-max values that are outside the range through CLI, the provisioned values are accepted; however, only the actual values supported by the hardware are applied.

Configure chromatic dispersion

Set chromatic dispersion ranges to optimize signal quality for optical controllers.
Follow these steps to configure chromatic dispersion values:

Procedure

1.

Run the cd-max and cd-mincommands to configure the chromatic dispersion maximum and minimum value.

Example:

This is a sample where chromatic dispersion is configured on the optics controller.


RP/0/RP0/CPU0:ios#configure
Mon Aug 19 19:31:42.115 UTC
RP/0/RP0/CPU0:ios(config)#controller  optics 0/1/0/1
RP/0/RP0/CPU0:ios(config-Optics)#cd-max 4000
RP/0/RP0/CPU0:ios(config-Optics)#cd-min -1000
RP/0/RP0/CPU0:ios(config-Optics)#commit
Mon Aug 19 19:35:24.697 UTC
RP/0/RP0/CPU0:ios(config-Optics)#exit
RP/0/RP0/CPU0:ios(config)#exit
RP/0/RP0/CPU0:ios#show run controller optics 0/1/0/*
Mon Aug 19 19:57:41.859 UTC
controller Optics0/1/0/0
 transmit-power -15
 dwdm-carrier 50GHz-grid itu-ch 55
 enh-sop-tol-mode 1
 cross-pol-gain-mode 10
 lbc-high-threshold 5
!
controller Optics0/1/0/1
 description trunk power UP
 cd-min -1000
 cd-max 4000
 enh-colorless-mode 2
 enh-sop-tol-mode 3
 nleq-comp-mode 4
 cross-pol-gain-mode 2
 cross-pol-weight-mode 3
 cpr-win-mode 3
 cpr-ext-win-mode 8
 rx-voa fixed-ratio 1200
 filter-roll-off-factor 0.035
!
controller Optics0/1/0/5
 soak-time 10
!
2.

Run the commit command to save and apply the configuration changes.

RP/0/RP0/CPU0:ios(config-Optics)#commit

The chromatic dispersion values are configured.

Configure transmit power

Adjust transmit power settings on optics controllers to ensure optimal system performance and compliance with new hardware and software releases.

From Release 7.3.1, you can configure transmit power on the CFP2 DCO optics for the OTN-XP card. The value ranges from -10 to +1 dBm.

From Release 7.3.2, you can configure transmit power on the QDD ZRP optics for the OTN-XP card. The following are the value ranges for OFEC and CFEC:

Table 2. Transmit power ranges by FEC type

FEC types

Transmit power (dBm)

OFEC

-13 to -9

CFEC

-10 to -6

Procedure

1.

Run the transmit-power command to configure transmit power on the CFP2 DCO optics for the OTN-XP card.

Example:

This is a sample to configure transmit power on the CFP2 DCO optics for the OTN-XP card.


RP/0/RP0/CPU0:ios#configure
Mon Aug 19 19:31:42.115 UTC
RP/0/RP0/CPU0:ios(config)#controller optics 0/1/0/12
RP/0/RP0/CPU0:ios(config-Optics)#transmit-power -1.50
RP/0/RP0/CPU0:ios(config-Optics)#commit
Mon Aug 19 19:35:24.697 UTC
RP/0/RP0/CPU0:ios(config-Optics)#exit
RP/0/RP0/CPU0:ios(config)#exit

Example:

This is a sample to configure transmit power on the QDD ZRP optics for the OTN-XP card.


RP/0/RP0/CPU0:ios#configure
Mon Aug 19 19:31:42.115 UTC
RP/0/RP0/CPU0:ios(config)#controller optics 0/1/0/9
RP/0/RP0/CPU0:ios(config-Optics)#transmit-power -8
RP/0/RP0/CPU0:ios(config-Optics)#commit
Mon Aug 19 19:35:24.697 UTC
RP/0/RP0/CPU0:ios(config-Optics)#
2.

Run the show controllers optics command to verify the transmit power thresholds configuration.

Example:

This is a sample in which transmit power of -1.50 dBm is configured on the CFP2 DCO optics for the OTN-XP card.


RP/0/RP0/CPU0:ios(config-hwmod-mxp)#do show controllers optics 0/1/0/12
Mon Jan 18 19:05:26.009 UTC
Controller State: Down
Transport Admin State: In Service
Laser State: On
LED State: Green
Optics Status
Optics Type: CFP2 DWDM
DWDM carrier Info: C BAND, MSA ITU Channel=61, Frequency=193.10THz,
Wavelength=1552.524nm
Alarm Status:
-------------
Detected Alarms: None
LOS/LOL/Fault Status:
Alarm Statistics:
-------------
HIGH-RX-PWR = 0 LOW-RX-PWR = 0
HIGH-TX-PWR = 0 LOW-TX-PWR = 0
HIGH-LBC = 0 HIGH-DGD = 0
OOR-CD = 0 OSNR = 0
WVL-OOL = 0 MEA = 0
IMPROPER-REM = 0
TX-POWER-PROV-MISMATCH = 0
Laser Bias Current = 0.0 %
Actual TX Power = -1.47 dBm
RX Power = -0.86 dBm
RX Signal Power = 0.86 dBm
Frequency Offset = 0 MHz
Performance Monitoring: Enable
THRESHOLD VALUES
----------------
Parameter High Alarm Low Alarm High Warning Low Warning
------------------------ ---------- --------- ------------ -----------
Rx Power Threshold(dBm) 4.9 -12.0 0.0 0.0
Tx Power Threshold(dBm) 3.5 -10.1 0.0 0.0
LBC Threshold(mA) N/A N/A 0.00 0.00
LBC High Threshold = 98 %
Configured Tx Power = -1.50 dBm
Configured CD High Threshold = 180000 ps/nm
Configured CD lower Threshold = -180000 ps/nm
Configured OSNR lower Threshold = 0.00 dB
Configured DGD Higher Threshold = 180.00 ps
Baud Rate = 63.0999984741 GBd
Bits per Symbol = 4.0000000000 bits/symbol
Modulation Type: 16QAM
Chromatic Dispersion 0 ps/nm
Configured CD-MIN -26000 ps/nm CD-MAX 26000 ps/nm
Polarization Mode Dispersion = 0.0 ps
Second Order Polarization Mode Dispersion = 156.00 ps^2
Optical Signal to Noise Ratio = 35.80 dB
SNR = 10.50 dB
Polarization Dependent Loss = 0.00 dB
Polarization Change Rate = 0.00 rad/s
Differential Group Delay = 1.00 ps
Filter Roll Off Factor : 0.000
Rx VOA Fixed Ratio : 0.00 dB
Enhanced Colorless Mode : 0
Enhanced SOP Tolerance Mode : 0

Example:

This is a sample in which transmit power of -8 dBm is configured on the QDD ZRP optics for the OTN-XP card: 

RP/0/RP0/CPU0:ios#show controller optics 0/1/0/9
Wed Sep 15 00:36:24.383 UTC

 Controller State: Up 

 Transport Admin State: In Service 

 Laser State: On 

 LED State: Green 
 
 Optics Status 

         Optics Type:  QSFP-DD DWDM
         DWDM carrier Info: C BAND, MSA ITU Channel=49, Frequency=193.70THz,
         Wavelength=1547.715nm 

         Alarm Status:
         -------------
         Detected Alarms: None


         LOS/LOL/Fault Status:

         Alarm Statistics:
          
         -------------
         HIGH-RX-PWR = 0            LOW-RX-PWR = 1          
         HIGH-TX-PWR = 0            LOW-TX-PWR = 1          
         HIGH-LBC = 0               HIGH-DGD = 0          
         OOR-CD = 0                 OSNR = 1          
         WVL-OOL = 0                MEA  = 0          
         IMPROPER-REM = 0          
         TX-POWER-PROV-MISMATCH = 0          
         Laser Bias Current = 0.0 %
         Actual TX Power = -8 dBm 
         RX Power = -7.31 dBm 
         RX Signal Power = -7.67 dBm 
         Frequency Offset = 81 MHz 
 Performance Monitoring: Enable 

         THRESHOLD VALUES
         ----------------

         Parameter                 High Alarm  Low Alarm  High Warning  Low Warning
         ------------------------  ----------  ---------  ------------  -----------
         Rx Power Threshold(dBm)          3.0      -23.5           0.0          0.0
         Tx Power Threshold(dBm)          0.0      -16.0           0.0          0.0
         LBC Threshold(mA)                N/A        N/A          0.00         0.00

         LBC High Threshold = 90 % 
         Configured Tx Power = -7.00 dBm 
         Configured CD High Threshold = 2400 ps/nm 
         Configured CD lower Threshold = -2400 ps/nm 
         Configured OSNR lower Threshold = 24.00 dB 
         Configured DGD Higher Threshold = 40.00 ps 
         Baud Rate =  59.8437500000 GBd
         Bits per Symbol = 4.0000000000  bits/symbol 
         Modulation Type: 16QAM 
         Chromatic Dispersion 0 ps/nm 
         Configured CD-MIN -2400 ps/nm  CD-MAX 2400 ps/nm 
         Polarization Mode Dispersion = 0.0 ps 
         Second Order Polarization Mode Dispersion = 29.00 ps^2 
         Optical Signal to Noise Ratio = 36.40 dB 
         SNR = 17.30 dB 
         Polarization Dependent Loss = 0.40 dB 
         Polarization Change Rate = 0.00 rad/s 
         Differential Group Delay = 3.00 ps 

 Transceiver Vendor Details
          
         Form Factor            : QSFP-DD
         Name                   : CISCO
         Part Number            : 10-3496-01
         Rev Number             : 11
         Serial Number          : 210153241
         PID                    : QDD-400G-ZRP-S
         VID                    : ES04
         Date Code(yy/mm/dd)    : 20/21/01
         Fiber Connector Type: LC 
         Otn Application Code: Not Set 
         Sonet Application Code: Not Set 
         Ethernet Compliance Code: Not set 
 Transceiver Temperature : 57 Celsius
 AINS Soak                : None 
 AINS Timer               : 0h, 0m
 AINS remaining time      : 0 seconds

The transmit power thresholds are configured.

Configure laser bias current high threshold

Assign a threshold to the laser bias current to monitor and manage optics controller performance.

You can configure the threshold of the laser bias current flowing on the phusical pluggable port on the trunk optics controller. The range is 0 to 100%.

Procedure

1.

Run the configure controller optics R/S/I/P lbc-high-threshold lbc-value command to configure the laser bias current threshold.

Example:

This is a sample to configures the high laser bias threshold on the controller optics.


RP/0/RP0/CPU0:ios#configure
RP/0/RP0/CPU0:ios(config)#controller optics 0/0/0/12
RP/0/RP0/CPU0:ios(config-Optics)#lbc-high-threshold 55
RP/0/RP0/CPU0:ios(config-Optics)#commit
2.

Run the show controllers optics command to verify the high rlaser bias threshold configured on the controller optics.

Example:

This sample shows the high rlaser bias threshold configured on the controller optics.


RP/0/RP0/CPU0:ios#show controllers optics 0/0/0/12
Fri Nov 12 10:58:50.595 UTC
Controller State: Up
Transport Admin State: In Service
Laser State: On
LED State: Yellow
Optics Status
         Optics Type:  CFP2 DWDM
         DWDM carrier Info: C BAND, MSA ITU Channel=61, Frequency=193.10THz,
         Wavelength=1552.524nm
         Alarm Status:
         -------------
         Detected Alarms:
                 HIGH-RX-PWR   LOW-TX-PWR
                 HIGH-DGD
         LOS/LOL/Fault Status:
         Alarm Statistics:
         -------------
         HIGH-RX-PWR = 1            LOW-RX-PWR = 0
         HIGH-TX-PWR = 0            LOW-TX-PWR = 1
         HIGH-LBC = 0               HIGH-DGD = 6
         OOR-CD = 0                 OSNR = 0
         WVL-OOL = 0                MEA  = 0
         IMPROPER-REM = 1
         TX-POWER-PROV-MISMATCH = 0
         Laser Bias Current = 0.0 %
         Actual TX Power = 0.97 dBm
         RX Power = -0.53 dBm
         RX Signal Power = -1.20 dBm
         Frequency Offset = 63 MHz
         Performance Monitoring: Enable
         THRESHOLD VALUES
         ----------------
         Parameter                 High Alarm  Low Alarm  High Warning  Low Warning
         ------------------------  ----------  ---------  ------------  -----------
         Rx Power Threshold(dBm)         -2.0       -3.0           0.0          0.0
         Tx Power Threshold(dBm)          4.0        2.0           0.0          0.0
         LBC Threshold(mA)                N/A        N/A          0.00         0.00
         LBC High Threshold = 55 %
         Configured Tx Power = 1.00 dBm
         Configured CD High Threshold = 2400 ps/nm
         Configured CD lower Threshold = -2400 ps/nm
         Configured OSNR lower Threshold = 0.40 dB
         Configured DGD Higher Threshold = 0.30 ps
         Baud Rate =  63.1394679230 GBd
         Bits per Symbol = 3.0000000000  bits/symbol
         Modulation Type: 8QAM
         Chromatic Dispersion 0 ps/nm
         Configured CD-MIN -48000 ps/nm  CD-MAX 48000 ps/nm
         Polarization Mode Dispersion = 0.0 ps
         Second Order Polarization Mode Dispersion = 29.00 ps^2
         Optical Signal to Noise Ratio = 36.10 dB
         SNR = 17.50 dB
         Polarization Dependent Loss = 0.50 dB
         Polarization Change Rate = 0.00 rad/s
         Differential Group Delay = 1.00 ps
Transceiver Vendor Details
         Form Factor            : CFP2
         Name                   : CISCO-ACACIA
         Part Number            : 10-3500-01
         Rev Number             : 01
         Serial Number          : ACA24480037
         PID                    : ONS-CFP2D-400G-C
         VID                    : VES1
         Date Code(yy/mm/dd)    : 20/11/10
         Fiber Connector Type: LC
         Otn Application Code: Not Set
         Sonet Application Code: Not Set
         Ethernet Compliance Code: Not set
Transceiver Temperature : 46 Celsius
AINS Soak                : None
AINS Timer               : 0h, 0m
AINS remaining time      : 0 seconds

The laser bias current threshold is configured.

Configure differential group delay threshold

Set the DGD threshold to ensure alarms are triggered if the value is exceeded, maintaining optical link quality.

You can configure the threshold value for the maximum acceptable differential group delay (DGD) on the trunk optics controllers. The DGD alarm is raised if DGD exceeds this value.

The range is 0–18000 (in the units of 0.01 ps).

Follow these steps to configure the DGD threshold on NCS 1004 optics controllers:

Procedure

1.

Run the configure controller optics R/S/I/P dgd-high-threshold dgd-value to configure the maximum acceptable DGD.

Example:

This sample configures the minimum acceptable DGD on the controller optics.


RP/0/RP0/CPU0:ios#configure
RP/0/RP0/CPU0:ios(config)#controller optics 0/0/0/12
RP/0/RP0/CPU0:ios(config-Optics)#dgd-high-threshold 30
RP/0/RP0/CPU0:ios(config-Optics)#commit
2.

Run the show controllers optics command to verify the maximum acceptable DGD configured on the controller optics.

Example:


RP/0/RP0/CPU0:ios#show controllers optics 0/0/0/12
Fri Nov 12 10:58:50.595 UTC
Controller State: Up
Transport Admin State: In Service
Laser State: On
LED State: Yellow
Optics Status
         Optics Type:  CFP2 DWDM
         DWDM carrier Info: C BAND, MSA ITU Channel=61, Frequency=193.10THz,
         Wavelength=1552.524nm
         Alarm Status:
         -------------
         Detected Alarms:
                 HIGH-RX-PWR   LOW-TX-PWR
                 HIGH-DGD
         LOS/LOL/Fault Status:
         Alarm Statistics:
         -------------
         HIGH-RX-PWR = 1            LOW-RX-PWR = 0
         HIGH-TX-PWR = 0            LOW-TX-PWR = 1
         HIGH-LBC = 0               HIGH-DGD = 6
         OOR-CD = 0                 OSNR = 0
         WVL-OOL = 0                MEA  = 0
         IMPROPER-REM = 1
         TX-POWER-PROV-MISMATCH = 0
         Laser Bias Current = 0.0 %
         Actual TX Power = 0.97 dBm
         RX Power = -0.53 dBm
         RX Signal Power = -1.20 dBm
         Frequency Offset = 63 MHz
         Performance Monitoring: Enable
         THRESHOLD VALUES
         ----------------
         Parameter                 High Alarm  Low Alarm  High Warning  Low Warning
         ------------------------  ----------  ---------  ------------  -----------
         Rx Power Threshold(dBm)         -2.0       -3.0           0.0          0.0
         Tx Power Threshold(dBm)          4.0        2.0           0.0          0.0
         LBC Threshold(mA)                N/A        N/A          0.00         0.00
         LBC High Threshold = 55 %
         Configured Tx Power = 1.00 dBm
         Configured CD High Threshold = 2400 ps/nm
         Configured CD lower Threshold = -2400 ps/nm
         Configured OSNR lower Threshold = 0.40 dB
         Configured DGD Higher Threshold = 0.30 ps
         Baud Rate =  63.1394679230 GBd
         Bits per Symbol = 3.0000000000  bits/symbol
         Modulation Type: 8QAM
         Chromatic Dispersion 0 ps/nm
         Configured CD-MIN -48000 ps/nm  CD-MAX 48000 ps/nm
         Polarization Mode Dispersion = 0.0 ps
         Second Order Polarization Mode Dispersion = 29.00 ps^2
         Optical Signal to Noise Ratio = 36.10 dB
         SNR = 17.50 dB
         Polarization Dependent Loss = 0.50 dB
         Polarization Change Rate = 0.00 rad/s
         Differential Group Delay = 1.00 ps
Transceiver Vendor Details
         Form Factor            : CFP2
         Name                   : CISCO-ACACIA
         Part Number            : 10-3500-01
         Rev Number             : 01
         Serial Number          : ACA24480037
         PID                    : ONS-CFP2D-400G-C
         VID                    : VES1
         Date Code(yy/mm/dd)    : 20/11/10
         Fiber Connector Type: LC
         Otn Application Code: Not Set
         Sonet Application Code: Not Set
         Ethernet Compliance Code: Not set
Transceiver Temperature : 46 Celsius
AINS Soak                : None
AINS Timer               : 0h, 0m
AINS remaining time      : 0 seconds

The DGD threshold is configured on the NCS 1004 optics controller.

Configure optical signal to noise ratio threshold

Ensure network integrity by setting the OSNR threshold, which triggers alarms if optical signal quality drops below the designated value.

You can configure the minimum acceptable Optical Signal to Noise ratio (OSNR) value. The OSNR alarm is raised if OSNR goes below this value.

The range is 0–4000 (in units of 0.01db).

Follow these steps to configure the OSNR low threshold:

Procedure

1.

Run the configure controller optics R/S/I/Posnr-low-thresholdosnr-value to configure the minimum acceptable OSNR.

Example:

This sample configures the minimum acceptable OSNR on the controller optics.


RP/0/RP0/CPU0:ios#configure
RP/0/RP0/CPU0:ios(config)#controller optics 0/0/0/12
RP/0/RP0/CPU0:ios(config-Optics)#osnr-low-threshold 40
RP/0/RP0/CPU0:ios(config-Optics)#commit
2.

Run the show controllers optics command to verify the minimum acceptable OSNR configured on the controller optics.

Example:


RP/0/RP0/CPU0:ios#show controllers optics 0/0/0/12
Fri Nov 12 10:58:50.595 UTC
Controller State: Up
Transport Admin State: In Service
Laser State: On
LED State: Yellow
Optics Status
         Optics Type:  CFP2 DWDM
         DWDM carrier Info: C BAND, MSA ITU Channel=61, Frequency=193.10THz,
         Wavelength=1552.524nm
         Alarm Status:
         -------------
         Detected Alarms:
                 HIGH-RX-PWR   LOW-TX-PWR
                 HIGH-DGD
         LOS/LOL/Fault Status:
         Alarm Statistics:
         ------------
         HIGH-RX-PWR = 1            LOW-RX-PWR = 0
         HIGH-TX-PWR = 0            LOW-TX-PWR = 1
         HIGH-LBC = 0               HIGH-DGD = 6
         OOR-CD = 0                 OSNR = 0
         WVL-OOL = 0                MEA  = 0
         IMPROPER-REM = 1
         TX-POWER-PROV-MISMATCH = 0
         Laser Bias Current = 0.0 %
         Actual TX Power = 0.97 dBm
         RX Power = -0.53 dBm
         RX Signal Power = -1.20 dBm
         Frequency Offset = 63 MHz
         Performance Monitoring: Enable
         THRESHOLD VALUES
         ----------------
         Parameter                 High Alarm  Low Alarm  High Warning  Low Warning
         ------------------------  ----------  ---------  ------------  -----------
         Rx Power Threshold(dBm)         -2.0       -3.0           0.0          0.0
         Tx Power Threshold(dBm)          4.0        2.0           0.0          0.0
         LBC Threshold(mA)                N/A        N/A          0.00         0.00
         LBC High Threshold = 55 %
         Configured Tx Power = 1.00 dBm
         Configured CD High Threshold = 2400 ps/nm
         Configured CD lower Threshold = -2400 ps/nm
         Configured OSNR lower Threshold = 0.40 dB
         Configured DGD Higher Threshold = 0.30 ps
         Baud Rate =  63.1394679230 GBd
         Bits per Symbol = 3.0000000000  bits/symbol
         Modulation Type: 8QAM
         Chromatic Dispersion 0 ps/nm
         Configured CD-MIN -48000 ps/nm  CD-MAX 48000 ps/nm
         Polarization Mode Dispersion = 0.0 ps
         Second Order Polarization Mode Dispersion = 29.00 ps^2
         Optical Signal to Noise Ratio = 36.10 dB
         SNR = 17.50 dB
         Polarization Dependent Loss = 0.50 dB
         Polarization Change Rate = 0.00 rad/s
         Differential Group Delay = 1.00 ps
Transceiver Vendor Details
         Form Factor            : CFP2
         Name                   : CISCO-ACACIA
         Part Number            : 10-3500-01
         Rev Number             : 01
         Serial Number          : ACA24480037
         PID                    : ONS-CFP2D-400G-C
         VID                    : VES1
         Date Code(yy/mm/dd)    : 20/11/10
         Fiber Connector Type: LC
         Otn Application Code: Not Set
         Sonet Application Code: Not Set
         Ethernet Compliance Code: Not set
Transceiver Temperature : 46 Celsius
AINS Soak                : None
AINS Timer               : 0h, 0m
AINS remaining time      : 0 seconds

The OSNR threshold is configured.

Configure chromatic dispersion threshold

Set CD thresholds on optics controllers to ensure alarms are raised if chromatic dispersion moves outside acceptable ranges.

You can configure the minimum and maximum acceptable chromatic dispersion for the trunk optics controllers. The CD alarm is raised if the chromatic dispersion goes below the minimum or exceeds the maximum value.

Follow these steps to configure chromatic dispersion thresholds:

Procedure

1.

Run the configure controller optics R/S/I/P cd-high-threshold cd-high cd-low-threshold cd-low command to configure the maximum and minimum acceptable CD.

Example:

This sample configures the maximum and minimum acceptable CD on the controller optics.


RP/0/RP0/CPU0:ios#configure
RP/0/RP0/CPU0:ios(config)#controller optics 0/0/0/12
RP/0/RP0/CPU0:ios(config-Optics)#cd-high-threshold 2400
RP/0/RP0/CPU0:ios(config-Optics)#cd-low-threshold -2400
RP/0/RP0/CPU0:ios(config-Optics)#commit
2.

Run the show controllers optics command to verify the configued CD thresholds.

Example:

This sample shows the maximum and minimum acceptable CD configured on the controller optics.


RP/0/RP0/CPU0:ios#show controllers optics 0/0/0/12
Fri Nov 12 10:58:50.595 UTC
Controller State: Up
Transport Admin State: In Service
Laser State: On
LED State: Yellow
Optics Status
         Optics Type:  CFP2 DWDM
         DWDM carrier Info: C BAND, MSA ITU Channel=61, Frequency=193.10THz,
         Wavelength=1552.524nm
         Alarm Status:
         -------------
         Detected Alarms:
                 HIGH-RX-PWR   LOW-TX-PWR
                 HIGH-DGD
         LOS/LOL/Fault Status:
         Alarm Statistics:
         -------------
         HIGH-RX-PWR = 1            LOW-RX-PWR = 0
         HIGH-TX-PWR = 0            LOW-TX-PWR = 1
         HIGH-LBC = 0               HIGH-DGD = 6
         OOR-CD = 0                 OSNR = 0
         WVL-OOL = 0                MEA  = 0
         IMPROPER-REM = 1
         TX-POWER-PROV-MISMATCH = 0
         Laser Bias Current = 0.0 %
         Actual TX Power = 0.97 dBm
         RX Power = -0.53 dBm
         RX Signal Power = -1.20 dBm
         Frequency Offset = 63 MHz
         Performance Monitoring: Enable
         THRESHOLD VALUES
         ----------------

         Parameter                 High Alarm  Low Alarm  High Warning  Low Warning
         ------------------------  ----------  ---------  ------------  -----------
         Rx Power Threshold(dBm)         -2.0       -3.0           0.0          0.0
         Tx Power Threshold(dBm)          4.0        2.0           0.0          0.0
         LBC Threshold(mA)                N/A        N/A          0.00         0.00
         LBC High Threshold = 55 %
         Configured Tx Power = 1.00 dBm
         Configured CD High Threshold = 2400 ps/nm
         Configured CD lower Threshold = -2400 ps/nm
         Configured OSNR lower Threshold = 0.40 dB
         Configured DGD Higher Threshold = 0.30 ps
         Baud Rate =  63.1394679230 GBd
         Bits per Symbol = 3.0000000000  bits/symbol
         Modulation Type: 8QAM
         Chromatic Dispersion 0 ps/nm
         Configured CD-MIN -48000 ps/nm  CD-MAX 48000 ps/nm
         Polarization Mode Dispersion = 0.0 ps
         Second Order Polarization Mode Dispersion = 29.00 ps^2
         Optical Signal to Noise Ratio = 36.10 dB
         SNR = 17.50 dB
         Polarization Dependent Loss = 0.50 dB
         Polarization Change Rate = 0.00 rad/s
         Differential Group Delay = 1.00 ps
Transceiver Vendor Details
         Form Factor            : CFP2
         Name                   : CISCO-ACACIA
         Part Number            : 10-3500-01
         Rev Number             : 01
         Serial Number          : ACA24480037
         PID                    : ONS-CFP2D-400G-C
         VID                    : VES1
         Date Code(yy/mm/dd)    : 20/11/10
         Fiber Connector Type: LC
         Otn Application Code: Not Set
         Sonet Application Code: Not Set
         Ethernet Compliance Code: Not set
Transceiver Temperature : 46 Celsius
AINS Soak                : None
AINS Timer               : 0h, 0m
AINS remaining time      : 0 seconds

The CD thresholds are configured.

Configure receive power threshold

Set optical receive power alarm and warning levels on the NCS 1004 optics controller.

You can configure the high and low threshold of the total optical signal power of the received signal on the trunk optics controller.

The range is –400 to 300 (in the units of 0.1 dBm).

Follow these steps to configure the high and low receive power thresholds:

Procedure

1.

Run the configure controller optics R/S/I/P rx-high-threshold rx-high rx-low-threshold rx-low to configure the high and low receive power threshold.

Example:

The is a sample to configure the high receive power threshold on the controller optics.


RP/0/RP0/CPU0:ios#configure
RP/0/RP0/CPU0:ios(config)#controller optics 0/0/0/12
RP/0/RP0/CPU0:ios(config-Optics)#rx-high-threshold -20
RP/0/RP0/CPU0:ios(config-Optics)#rx-low-threshold -30
RP/0/RP0/CPU0:ios(config-Optics)#commit
2.

Run the show controllers optics command to verify the optics controller configuration mode.

Example:

This sample shows the high receive power threshold configured on the controller optics.


RP/0/RP0/CPU0:ios#show controllers optics 0/0/0/12
Fri Nov 12 10:58:50.595 UTC
Controller State: Up
Transport Admin State: In Service
Laser State: On
LED State: Yellow
Optics Status
         Optics Type:  CFP2 DWDM
         DWDM carrier Info: C BAND, MSA ITU Channel=61, Frequency=193.10THz,
         Wavelength=1552.524nm
         Alarm Status:
         -------------
         Detected Alarms:
                 HIGH-RX-PWR   LOW-TX-PWR
                 HIGH-DGD

         LOS/LOL/Fault Status:
         Alarm Statistics:
         -------------
         HIGH-RX-PWR = 1            LOW-RX-PWR = 0
         HIGH-TX-PWR = 0            LOW-TX-PWR = 1
         HIGH-LBC = 0               HIGH-DGD = 6
         OOR-CD = 0                 OSNR = 0
         WVL-OOL = 0                MEA  = 0
         IMPROPER-REM = 1
         TX-POWER-PROV-MISMATCH = 0
         Laser Bias Current = 0.0 %
         Actual TX Power = 0.97 dBm
         RX Power = -0.53 dBm
         RX Signal Power = -1.20 dBm
         Frequency Offset = 63 MHz
         Performance Monitoring: Enable
         THRESHOLD VALUES
         ----------------

         Parameter                 High Alarm  Low Alarm  High Warning  Low Warning
         ------------------------  ----------  ---------  ------------  -----------
         Rx Power Threshold(dBm)         -2.0       -3.0           0.0          0.0
         Tx Power Threshold(dBm)          4.0        2.0           0.0          0.0
         LBC Threshold(mA)                N/A        N/A          0.00         0.00
         LBC High Threshold = 55 %
         Configured Tx Power = 1.00 dBm
         Configured CD High Threshold = 2400 ps/nm
         Configured CD lower Threshold = -2400 ps/nm
         Configured OSNR lower Threshold = 0.40 dB
         Configured DGD Higher Threshold = 0.30 ps
         Baud Rate =  63.1394679230 GBd
         Bits per Symbol = 3.0000000000  bits/symbol
         Modulation Type: 8QAM
         Chromatic Dispersion 0 ps/nm
         Configured CD-MIN -48000 ps/nm  CD-MAX 48000 ps/nm
         Polarization Mode Dispersion = 0.0 ps
         Second Order Polarization Mode Dispersion = 29.00 ps^2
         Optical Signal to Noise Ratio = 36.10 dB
         SNR = 17.50 dB
         Polarization Dependent Loss = 0.50 dB
         Polarization Change Rate = 0.00 rad/s
         Differential Group Delay = 1.00 ps
Transceiver Vendor Details
         Form Factor            : CFP2
         Name                   : CISCO-ACACIA
         Part Number            : 10-3500-01
         Rev Number             : 01
         Serial Number          : ACA24480037
         PID                    : ONS-CFP2D-400G-C
         VID                    : VES1
         Date Code(yy/mm/dd)    : 20/11/10
         Fiber Connector Type: LC
         Otn Application Code: Not Set
         Sonet Application Code: Not Set
         Ethernet Compliance Code: Not set
Transceiver Temperature : 46 Celsius
AINS Soak                : None
AINS Timer               : 0h, 0m
AINS remaining time      : 0 seconds

The receive power thresholds are configured.

Configure transmit power threshold

Set the high and low threshold values for the total optical signal power transmitted on the trunk optics controller.

You can configure the high and low threshold of the total optical signal power of the transmitted signal on the trunk optics controller.

The range is –400 to 300 (in the units of 0.1 dBm).

Follow these steps to configure the high and low transmit power threshold:

Procedure

1.

Run the configure controller optics R/S/I/P tx-high-threshold tx-high tx-low-threshold tx-low to configure the high and low transmit power threshold.

Example:

This sample configures the high transmit power threshold on the controller optics.


RP/0/RP0/CPU0:ios#configure
RP/0/RP0/CPU0:ios(config)#controller optics 0/0/0/12
RP/0/RP0/CPU0:ios(config-Optics)#tx-high-threshold 40
RP/0/RP0/CPU0:ios(config-Optics)#tx-low-threshold 20
RP/0/RP0/CPU0:ios(config-Optics)#commit
2.

Run the show controllers optics command to verify the high transmit power threshold configured on the controller optics.

Example:

This sample shows the high transmit power threshold configured on the controller optics.


RP/0/RP0/CPU0:ios#show controllers optics 0/0/0/12
Fri Nov 12 10:58:50.595 UTC
Controller State: Up
Transport Admin State: In Service
Laser State: On
LED State: Yellow
Optics Status
         Optics Type:  CFP2 DWDM
         DWDM carrier Info: C BAND, MSA ITU Channel=61, Frequency=193.10THz,
         Wavelength=1552.524nm
         Alarm Status:
         -------------
         Detected Alarms:
                 HIGH-RX-PWR   LOW-TX-PWR
                 HIGH-DGD
         LOS/LOL/Fault Status:
         Alarm Statistics:
         -------------
         HIGH-RX-PWR = 1            LOW-RX-PWR = 0
         HIGH-TX-PWR = 0            LOW-TX-PWR = 1
         HIGH-LBC = 0               HIGH-DGD = 6
         OOR-CD = 0                 OSNR = 0
         WVL-OOL = 0                MEA  = 0
         IMPROPER-REM = 1
         TX-POWER-PROV-MISMATCH = 0
         Laser Bias Current = 0.0 %
         Actual TX Power = 0.97 dBm
         RX Power = -0.53 dBm
         RX Signal Power = -1.20 dBm
         Frequency Offset = 63 MHz
         Performance Monitoring: Enable
         THRESHOLD VALUES
         ----------------
         Parameter                 High Alarm  Low Alarm  High Warning  Low Warning
         ------------------------  ----------  ---------  ------------  -----------
         Rx Power Threshold(dBm)         -2.0       -3.0           0.0          0.0
         Tx Power Threshold(dBm)          4.0        2.0           0.0          0.0
         LBC Threshold(mA)                N/A        N/A          0.00         0.00
         LBC High Threshold = 55 %
         Configured Tx Power = 1.00 dBm
         Configured CD High Threshold = 2400 ps/nm
         Configured CD lower Threshold = -2400 ps/nm
         Configured OSNR lower Threshold = 0.40 dB
         Configured DGD Higher Threshold = 0.30 ps
         Baud Rate =  63.1394679230 GBd
         Bits per Symbol = 3.0000000000  bits/symbol
         Modulation Type: 8QAM
         Chromatic Dispersion 0 ps/nm
         Configured CD-MIN -48000 ps/nm  CD-MAX 48000 ps/nm
         Polarization Mode Dispersion = 0.0 ps
         Second Order Polarization Mode Dispersion = 29.00 ps^2
         Optical Signal to Noise Ratio = 36.10 dB
         SNR = 17.50 dB
         Polarization Dependent Loss = 0.50 dB
         Polarization Change Rate = 0.00 rad/s
         Differential Group Delay = 1.00 ps
Transceiver Vendor Details
         Form Factor            : CFP2
         Name                   : CISCO-ACACIA
         Part Number            : 10-3500-01
         Rev Number             : 01
         Serial Number          : ACA24480037
         PID                    : ONS-CFP2D-400G-C
         VID                    : VES1
         Date Code(yy/mm/dd)    : 20/11/10
         Fiber Connector Type: LC
         Otn Application Code: Not Set
         Sonet Application Code: Not Set
         Ethernet Compliance Code: Not set
Transceiver Temperature : 46 Celsius
AINS Soak                : None
AINS Timer               : 0h, 0m
AINS remaining time      : 0 seconds

The receive power thresholds are configured.