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

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FlexO GID and IID

Updated: June 18, 2026

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This section explains how FlexO Group Identifiers (GIDs) and Instance Identifiers (IIDs) are used to enable flexible, scalable, and efficient transport of OTU signals on trunk ports.

The 2.4T and 2.4TX cards use are equipped with flexible OTN (flexO) interfaces on their trunk ports. These flexO interfaces enable the efficient and interoperable transport of OTU signals by aggregating multiple standard lower-rate interfaces.

Each group of flexO interfaces is assigned a unique flexO group identification (GID) number, which can range from 1 to 1,048,576. Within each group, individual interfaces are identified by a flexO instance identification (IID) number. Note that the IID for each member is fixed and cannot be modified.

Configure FlexO GID and IID

Use this task to configure flexO GID and IID on the coherentDSP controller.

Procedure

1.

Run the configure command to enter the global configuration mode.

Example:

This sample shows how to configure flexO GID on the CoherentDSP controller.


RP/0/RP0/CPU0:ios#configure terminal
Mon Feb  5 05:14:42.919 UTC
RP/0/RP0/CPU0:ios(config)#controller coherentDSP 0/0/0/0
RP/0/RP0/CPU0:ios(config-CoDSP)#flexo gid 1048575
RP/0/RP0/CPU0:ios(config-CoDSP)#commit
2.

Run the show controllers command to verify the configuration.

Example:

This sample shows the flexO GID configuration on the CoherentDSP controller.


RP/0/RP0/CPU0:ios#show controllers coherentDSP 0/0/0/0 
Mon Feb  5 05:20:01.660 UTC

Port                                            : CoherentDSP 0/0/0/0
Controller State                                : Up
Inherited Secondary State                       : Normal
Configured Secondary State                      : Normal
Derived State                                   : In Service
Loopback mode                                   : None
BER Thresholds                                  : SF = 1.0E-5  SD = 1.0E-7
Performance Monitoring                          : Enable
Bandwidth                                       : 1200.0Gb/s

Alarm Information:
LOS = 1 LOF = 0 LOM = 0
OOF = 0 OOM = 0 AIS = 0
IAE = 0 BIAE = 0        SF_BER = 0
SD_BER = 0      BDI = 0 TIM = 0
FECMISMATCH = 0 FEC-UNC = 1     FLEXO_GIDM = 0
FLEXO-MM = 0    FLEXO-LOM = 0   FLEXO-RDI = 0
FLEXO-LOF = 0   
Detected Alarms                                 : None

Bit Error Rate Information
PREFEC  BER                                     : 1.23E-02 
POSTFEC BER                                     : 0.00E+00 
Q-Factor                                        : 7.00 dB 

Q-Margin                                        : 0.80 dB

Instantaneous Q-Margin                          : 0.80 dB

TTI :
        Remote hostname                         : ios
        Remote interface                        : CoherentDSP 0/0/0/7
        Remote IP addr                          : 0.0.0.0

FEC mode                                        : Soft-Decision 15

Flexo-Mode                                      : Enable
Flexo Details:
        Tx GID                                  : 1
        TX IID                                  : 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 
        Rx GID                                  : 1
        RX IID                                  : 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 
          
AINS Soak                                       : None
AINS Timer                                      : 0h, 0m
AINS remaining time                             : 0 seconds
3.

Run the commit command to apply the changes.