Configure differential group delay threshold

Run the controller opticsR/S/I/Pdgd-high-thresholddgd-value command to configure 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 0/0/0/7
RP/0/RP0/CPU0:ios(config-Optics)#dgd-high-threshold 30
RP/0/RP0/CPU0:ios(config-Optics)#commit

This sample shows the maximum acceptable DGD configured on the controller optics.


RP/0/RP0/CPU0:ios#show controllers optics 0/0/0/7
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:  CIM8 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            : CIM8
         Name                   : CISCO-ACACIA
         Part Number            : 10-3500-01
         Rev Number             : 01
         Serial Number          : ACA24480037
         PID                    : CIM8-C-K9
         VID                    : VES1
         Date Code(yy/mm/dd)    : 23/11/10
         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

Procedure

Example: