Configuration Guide for Cisco NCS 1014, IOS XR Releases 26.x.x

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Transmit shutdown

Updated: June 18, 2026

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This section explains how transmit shutdown features control and disable optical transmit power on trunk optics controllers.

Transmit shut on trunk optics controller brings down the CIM8 and PICO transmit power. You can configure transmit shut on optics controller of a 1.2T, 2.4TX, or 2.4T card.

Configure transmit shutdown on trunk optics controller

To perform transmit shutdown, enter these commands: 


RP/0/RP0/CPU0:ios#configure
RP/0/RP0/CPU0:chassisA164(config)#controller optics 0/1/0/0
RP/0/RP0/CPU0:chassisA164(config-Optics)#transmit-shutdown
RP/0/RP0/CPU0:chassisA164(config-Optics)#commit
RP/0/RP0/CPU0:ios(config-Optics)#exit
RP/0/RP0/CPU0:ios(config)#exit

Verify transmit shutdown on trunk optics controller

Use this task to verify the transmit shutdown details on the trunk optics controller.

Procedure

Run the show controllers opticsR/S/I/P command to view the transmit shutdown details.

Example:


RP/0/RP0/CPU0:ios#show controllers optics 0/0/0/0
Tue Dec 12 05:38:32.416 UTC
Controller State: Up
Transport Admin State: In Service
Laser State: Off
LED State: Green
Optics Status
     Optics Type:  CIM8 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 = 2          
     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 = -40.00 dBm 
     RX Power = -6.60 dBm 
     RX Signal Power = -7.06 dBm 
     Frequency Offset = -846 MHz 
     Performance Monitoring: Enable 
      
     THRESHOLD VALUES
     ----------------
      
     Parameter                 High Alarm  Low Alarm  High Warning  Low Warning
     ------------------------  ----------  ---------  ------------  -----------
     Rx Power Threshold(dBm)         13.0      -17.0           0.0          0.0
     Tx Power Threshold(dBm)          5.0      -13.0           0.0          0.0
     LBC Threshold(mA)                N/A        N/A          0.00         0.00
      
     LBC High Threshold = 90 % 
     Configured Tx Power = 2.00 dBm 
     Configured CD High Threshold = 180000 ps/nm 
     Configured CD lower Threshold = -180000 ps/nm 
     Configured OSNR lower Threshold = 20.50 dB 
     Configured DGD Higher Threshold = 90.00 ps 
     Baud Rate =  137.9783780000 GBd
     Bits per Symbol = 3.5200000000  bits/symbol 
     Modulation Type: PCS 
     Chromatic Dispersion 0 ps/nm 
     Configured CD-MIN -10000 ps/nm  CD-MAX 48000 ps/nm 
     Polarization Mode Dispersion = 0.0 ps 
     Second Order Polarization Mode Dispersion = 9.00 ps^2 
     Optical Signal to Noise Ratio = 36.90 dB 
     SNR = 16.10 dB 
     Polarization Dependent Loss = 0.90 dB 
     Polarization Change Rate = 0.00 rad/s 
     Differential Group Delay = 1.00 ps 
     Filter Roll Off Factor : 0.100 
     Rx VOA Target Power : -2.0 dBm
     NLEQ Compensation Mode : 0
     Cross Polarization Gain Mode : 10
     Proprietary Submarine Parameters
       Type : 1        Value : 0
       Type : 2        Value : 0
       Type : 3        Value : 0
       Type : 4        Value : 0
       Type : 5        Value : 10485760 
          
          
 Transceiver Vendor Details
          
     Form Factor            : CIM8
     Name                   : CISCO-ACACIA
     Serial Number          : N/A
     PID                    : CIM8-C-K9
     VID                    : N/A
     Date Code(yy/mm/dd)    : 23/10/20
     Fiber Connector Type: LC 
     Otn Application Code: Not Set 
     Sonet Application Code: Not Set 
     Ethernet Compliance Code: Not set   
          
 Transceiver Temperature : 38 Celsius

AINS Soak                : None
AINS Timer               : 0h, 0m
AINS remaining time      : 0 seconds