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

Configure the inverse muxponder on OTN-XP card for 400GE client

Updated: July 31, 2026

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Use this procedure to configure the inverse muxponder mode on the OTN-XP card to split a high-rate client signal across multiple lower-rate trunk ports by specifying a traffic-split percentage.

Configure the OTN-XP card in inverse muxponder mode so that a 400GE client signal can be split and transported over 2x200G CFP2 trunk ports, increasing signal reachability.

Table 1. Feature History

Feature Name

Release Information

Feature Description

Inverse Muxponder Configuration on OTN-XP Card

Cisco IOS XR Release 7.3.2

The OTN-XP card supports inverse multiplexing for 400GE client over 2x200G CFP2 trunk ports. This feature allows you to split the 400GE client signal and carry it over 2x200G trunks thereby increasing the ease of signal reachability.

Commands modified:

  • hw-module (OTN-XP Card)

  • controller coherentDSP

You can configure the OTN-XP card to support inverse multiplexing for 400GE client over 2x200G CFP2 trunk ports.

Procedure

1.

Run the configure hw-module location location mxponder trunk-rate 200G client-port-rate client-port-numberclient-type 400GE command to configure the OTN-XP card to support inverse multiplexing for 400GE client over 2x200G CFP2 trunk ports.

Example:

This sample configures inverse muxponder for 400G:


RP/0/RP0/CPU0:ios #Configure
RP/0/RP0/CPU0:ios(config)#hw-module location 0/0 mxponder
RP/0/RP0/CPU0:ios(config-hwmod-mxp)#trunk-rate 200G 
RP/0/RP0/CPU0:ios(config-hwmod-mxp)#client-port-rate 10 client-type 400GE 
RP/0/RP0/CPU0:ios(config-hwmod-mxp)#commit

Example:

This sample verifies the inverse muxponder configuration: 


RP/0/RP0/CPU0:ios#show hw-module location 0/0 mxponder
Wed Jun  9 23:16:59.478 UTC

Location:             0/0
Client Bitrate:       400GE
Trunk  Bitrate:       200G
Status:               Provisioned
LLDP Drop Enabled:    FALSE
ARP Snoop Enabled:    FALSE
Client Port                   Mapper/Trunk Port         CoherentDSP0/0/0/12   CoherentDSP0/0/0/13     
                              Traffic Split Percentage

FourHundredGigECtrlr0/0/0/10  ODU-FLEX0/0/0/12/10          50                  50
2.

Run these commands to peform alarm correlation for the inverse muxponder.

Example:

When any service-affecting alarm is raised on the trunk port 12 or 13, the alarms are reported on the ports as follows:

  • Port 12―Flexo alarms (FLEXO_LOS, FLEXO_LOL, FLEXO_GIDM, FLEXO_FMM, FLEXO_LOF, and FLEXO_LOM) and OTU alarms (LOD, AIS, LOS, LOM, LOD, and TIM)

  • Port 13―Flexo alarms except Flexo MM and GIDM.

Both ports 12 and 13 go down when any service-affecting alarm is raised.

Shut down the trunk port 12:


RP/0/RP0/CPU0:ios(config)#controller coherentDSP 0/3/0/12 
RP/0/RP0/CPU0:ios(config-CoDSP)#shutdown 
RP/0/RP0/CPU0:ios(config-CoDSP)#commit
Thu Sep 30 14:12:48.416 UTC
3.

Run the commit command to save and apply the inverse muxponder configuration.

Example:

RP/0/RP0/CPU0:ios(config-hwmod-mxp)#commit
4.

Run the show hw-module location <location> mxponder-slice command to verify the inverse muxponder configuration and confirm that the client port appears with correct trunk channel assignments.

Example:

This sample verifies that when trunk port 12 is shut down, LOS alarm is raised and the trunk port 13 also goes down.


RP/0/RP0/CPU0:ios#show controllers coherentDSP 0/2/0/12 
Thu Sep 30 14:12:54.604 UTC

Port                                            : CoherentDSP 0/2/0/12
Controller State                                : Down
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                                       : 200.0Gb/s

Alarm Information:
LOS = 2 LOF = 0 LOM = 0
OOF = 1 OOM = 0 AIS = 1
IAE = 0 BIAE = 0        SF_BER = 0
SD_BER = 0      BDI = 0 TIM = 0
FECMISMATCH = 0 FEC-UNC = 0     FLEXO_GIDM = 0
FLEXO-MM = 0    FLEXO-LOM = 0   FLEXO-RDI = 1
FLEXO-LOF = 0   
Detected Alarms                                 : LOS 

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

Q-Margin                                        : 0.00dB 

TTI :
        Remote IP addr                          : 0.0.0.0

FEC mode                                        : O_FEC

Flexo-Mode                                      : Enable
Flexo Details:
        Tx GID                                  : 1
        TX IID                                  : 1, 2, 
        Rx GID                                  : 0
        RX IID                                  : 0, 0, 

Flexo Peers Information:
        Controller                              : CoherentDSP0_2_0_13 
        OTUCn rate                              : OTUC2


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


RP/0/RP0/CPU0:ios#show controllers coherentDSP 0/2/0/13 
Thu Sep 30 14:12:59.330 UTC

Port                                            : CoherentDSP 0/2/0/13
Controller State                                : Down
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                                       : 200.0Gb/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 = 0     FLEXO_GIDM = 0
FLEXO-MM = 0    FLEXO-LOM = 0   FLEXO-RDI = 1
FLEXO-LOF = 0   
Detected Alarms                                 : None

Bit Error Rate Information
PREFEC  BER                                     : 0.00E+00 
POSTFEC BER                                     : 0.00E+00 
Q-Factor                                        : 15.80 dB 

Q-Margin                                        : 9.50dB 

TTI :
        Remote IP addr                          : 0.0.0.0

FEC mode                                        : O_FEC

Flexo-Mode                                      : Enable
Flexo Details:
        Tx GID                                  : 1
        TX IID                                  : 3, 4, 
        Rx GID                                  : 1
        RX IID                                  : 3, 4, 

Flexo Peers Information:
        Controller                              : CoherentDSP0_2_0_12 
        OTUCn rate                              : OTUC2


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

The OTN-XP card is operating in inverse muxponder mode. The high-rate 400GE client signal is split across multiple trunk channels based on your configured traffic-split percentage.