Configuring Controllers

This chapter describes the Optics Controller and Coherent DSP Controller for the 6-port Coherent Line Card (NC55-6X200-DWDM-S). This chapter also describes the procedures used to configure the controllers.


Note

When you plan to replace a configured optical module with a different type of optical module, you must clear the configurations of the old module before installing the new optical module.


Note

When two MACsec enabled Cisco NCS 5500 routers with Coherent Line Cards are connected, there is no compatibility between Coherent Line Cards of IOS XR Release version 6.5.x (or lower) and 6.6.1 (or higher).

Optics Controllers

Controllers are represented in the rack/slot/instance/port format (r/s/i/p); for example, 0/3/0/1. Each port has an optics controller that is created on startup.


Note

You must shut down the optics controller before you perform any of the following tasks:

  • Configure the controller

  • Restore a saved configuration

  • Upgrade the DSP processor or CFP2 optics module Field Programmable Device (FPD)


Note

When there are dualrate optics on NCS-57C3-MOD-S/-SE-S + NC57-MPA-12L-S, and while configuring lower speed, you may see a few initial link flaps, after that the link stabilizes and no further flaps will be seen.

Bidirectional CFP2 DCO Optics Support

Table 1. Feature History Table

Feature Name

Release

Description

Support for DP04CFP2-D15 Bidirectional CFP2-DCO Optical Module

Release 7.8.1

In this release, support for DP04CFP2-D15 bidirectional CFP2-DCO optical module is added for NC55-MOD-A-S and NCS-55A2-MOD-S routers with the following MPAs:

  • NC55-MPA-2TH-S

  • NC55-MPA-1TH2H-S

The bidirectional CFP2-DCO optical module allows for data transmission and reception in both directions over a single fiber of a network, offering a cost and operationally effective method for expanding the network capacity in fiber-restricted networks.

The bidirectional CFP2-DCO optical module provides an effective way to increase the network capacity in situations where only single fiber is available. The bidirectional CFP2-DCO optical module enables data transmission and reception in both directions over single fiber of a network. Using dense wavelength division multiplexing (DWDM), the bidirectional CFP2-DCO optics can operate at 100G and 200G speeds through NC55-MPA-2TH-S and NC55-MPA-1TH2H-S MPAs operating in NC55-MOD-A-S and NCS-55A2-MOD-S routers.

The bidirectional CFP2 DCO optics support the following traffic configurations:

Speed

Modulation

Forward Error Correction

Differential

100G

qpsk

ofec

disable

200G

qpsk

ofec

disable

The bidirectional CFP2 DCO optics support the following Tx-Rx channel mapping:

Table 2. Tx-Rx Channel Map

Tx channel

Rx channel

1

3

5

7

9

11

13

15

17

19

21

23

25

27

29

31

33

35

37

39

41

43

45

47

49

51

53

55

57

59

61

63

65

67

69

71

73

75

77

79

81

83

85

87

89

91

93

95

Configuring Bidirectional CFP2 DCO Optical Module

This example shows steps to configure a 200G bidirectional CFP2 DCO optical module with Tx channel 1 and Rx channel 3:

RP/0/RP0/CPU0:router(config)#controller optics 0/0/1/0
RP/0/RP0/CPU0:router(config-optics)#port-mode 200G qpsk ofec diff disable
RP/0/RP0/CPU0:router(config-optics)#commit
RP/0/RP0/CPU0:router(config-optics)#dwdm-carrier 50Ghz-grid itu-ch 1
RP/0/RP0/CPU0:router(config-optics)#commit
RP/0/RP0/CPU0:router(config-optics)#exit
RP/0/RP0/CPU0:router(config)#controller optics 0/0/1/1
RP/0/RP0/CPU0:router(config-optics)#port-mode 200G qpsk ofec diff disable
RP/0/RP0/CPU0:router(config-optics)#commit
RP/0/RP0/CPU0:router(config-optics)#dwdm-carrier 50Ghz-grid itu-ch 3
RP/0/RP0/CPU0:router(config-optics)#commit
RP/0/RP0/CPU0:router(config-optics)#exit
Verification

This example displays the verification of bidirectional CFP2 DCO optical module communication between 0/0/1/0 and 0/0/1/1:

RP/0/RP0/CPU0:router#show coherent driver summary location 0/0/CPU0
Thu Sep 29 03:23:58.778 UTC
======================================================================================================
PORT       ADMIN-STATE    PLUGGABLE   TRAFFIC TYPE                FREQUENCY(100Mhz)      LASER STATE  
======================================================================================================
0/0/1/0    UP             CFP2        200G_QPSK_0-FEC_NODIFF      1961000                 OFF
0/0/1/1    UP             CFP2        200G_QPSK_0-FEC_NODIFF      1960000                 OFF

Maintenance Mode

Coherent DSP controllers can be placed in maintenance mode. Use the controller coherentDSP secondary-admin-state maintenance command to place controllers in maintenance mode.

Use the show controllers optics r/s/i/p command to view optics parameter values, laser state, controller state, admin state, and trunk alarms on the card, and threshold values for the different optics parameters.

Use the show controllers coherentDSP r/s/i/p command to view the DSP controller state and alarm status and statistics.


Note
In maintenance mode, all alarms are suppressed and the show alarms command does not display alarm details. However, traffic is not affected in maintenance mode.

Note
The FEC is disabled for 25G and 50G optics in NC57-MPA-12L-S MPA when connected on 55A2-MOD-SE-S/-SE-H-S router, and in Line card NC57-MOD-S while verifying the FEC status using show controllers { TwentyfiveGigE | FiftyGigE }

Performance Monitoring

Performance monitoring (PM) parameters are used by service providers to gather, store, set thresholds for, and report performance data for early detection of problems. The user can retrieve both current and historical PM counters for the various controllers in 30-second, 15-minute, and 24-hour intervals.

PM for optical parameters include input signal power and transmit power, optical signal-to-noise ratio, chromatic dispersion, polarization dependent loss, second order polarization mode dispersion, differential group delay, and transmitter laser bias current.

PM for DSP parameters include:

  • FEC: error corrected bits, uncorrectable blocks, pre-FEC BER (block errors ratio)

  • OTN: errored seconds, severely effected seconds, unavailable seconds, failed counts

These parameters simplify troubleshooting operations and enhance data that can be collected directly from the equipment.

How to Configure Controllers

This section contains the following procedures:

Configuring Optics Controller

You can configure parameters such as performance monitoring, high power threshold, and wavelength for Optics controller.

To configure the Optics controller, use the following commands:

Before you begin

You must shut down the optics controller before you perform any of the following tasks:

  • Configure the controller

  • Restore a saved configuration

  • Upgrade the DSP processor or CFP2 optics module Field Programmable Device (FPD)

SUMMARY STEPS

  1. configure
  2. controller optics r/s/i/p
  3. shutdown
  4. commit
  5. rx-high-threshold rx-high
  6. tx-high-threshold tx-high
  7. no shutdown
  8. commit

DETAILED STEPS

  Command or Action Purpose

Step 1

configure

Example:


RP/0/RP0/CPU0:router# configure terminal

Enters global configuration mode.

Step 2

controller optics r/s/i/p

Example:


RP/0/RP0/CPU0:router(config)# controller optics 0/3/0/1

Enters optics controller configuration mode.

Step 3

shutdown

Example:


RP/0/RP0/CPU0:router(config-Optics)# shutdown

Shuts down the optics controller.

Step 4

commit

Example:


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

Saves the configuration changes to the running configuration file and remains within the configuration session.

Step 5

rx-high-threshold rx-high

Example:


RP/0/RP0/CPU0:router(config-Optics)# rx-high-threshold 200

Configures the high receive power threshold. The range is -400 to 300 (in the units of 0.1 dBm).

Step 6

tx-high-threshold tx-high

Example:


RP/0/RP0/CPU0:router(config-Optics)# tx-high-threshold 300

Configures the high transmit power threshold. The range is -400 to 300 dBm (in the units of 0.1 dBm).

Step 7

no shutdown

Example:


RP/0/RP0/CPU0:router(config-Optics)# no shutdown

Removes the shutdown configuration on the optics controller.

Step 8

commit

Example:


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

Saves the configuration changes to the running configuration file and remains within the configuration session.


Note

When you bring up the local optics controller, you might briefly see transient loss of signal (LOS) alarms on the console. This behavior might be observed during the initial tuning of the channel. 


PKT_INFRA-FM-2-FAULT_CRITICAL : ALARM_CRITICAL :LOS-P :DECLARE :CoherentDSP0/3/0/1: 
PKT_INFRA-FM-2-FAULT_CRITICAL : ALARM_CRITICAL :LOS-P :CLEAR :CoherentDSP0/3/0/1:

During the laser-on process, you might briefly see transient loss of line (LOL) alarms on the console. This alarm is cleared when the laser-on process is complete. 


PKT_INFRA-FM-3-FAULT_MAJOR : ALARM_MAJOR :CTP2 RX LOL :DECLARE ::  
PKT_INFRA-FM-3-FAULT_MAJOR : ALARM_MAJOR :CTP2 RX LOL :CLEAR ::

The laser-on process can take up to 120 seconds to complete.

Restrictions and Usage Guidelines for Port Modes

This section provides the restrictions and usage guidelines for the supported port modes.

Table 3. Restrictions and Usage Guidelines for Port Modes

Port Mode

Usage Guidelines

Restrictions

25Gbps

    • NCS-55A2-MOD-S

    • NCS-55A2-MOD-HD-S

    • NCS-55A2-MOD-SE-S

    • NC55A2-MOD-SE-H-S

    • NCS-55A2-MOD-HX-S

    • NCS-55A1-48Q6H

    • NCS-55A1-24Q6H-S

    • NC55-MOD-A-SE-S

    • NC55-MOD-A-S

    • NC55-32T16Q4H-A

    • N540-24Z8Q2C-M

    • N540X-ACC-SYS

    • N540-ACC-SYS

    • N540-28Z4C-SYS

  • The 25Gbps mode is divided into four quads (0-3). Each quad consists of the following ports:

    • Quad 0 - Ports 24-27

    • Quad 1 - Ports 28-31

    • Quad 2 - Ports 32-35

    • Quad 3 - Ports 36-39

  • 10Gbps mode supports both 1Gpbs and 10Gbps port speed.

  • 25Gbps mode is the default mode set on the quad.

  • Port speeds of 1Gbps and 10Gbps are incompatible with a 25Gbps port speed within the same quad. They cannot be configured to operate simultaneously.

Configure Port Mode Speed

Each port on the 6-port Coherent Line Card can support 100 Gbps (DWDM QPSK), 150Gbps (DWDM 8 QAM), or 200Gbps (DWDM 16 QAM) WDM signals.


Note

You might rarely see up to five syslog messages mentioning that the recovery mechanism got triggered to recover the port. These messages are about a port in down state due to auto-negotiation mismatch with the peer port and other port-down scenarios. You can ignore such syslog messages as they will not affect the functionality of the ports.


Note

The line card has three Digital Signal Processors (DSPs), one for each pair of ports:

  • Ports 0 and 1 – DSP0

  • Ports 2 and 3 – DSP1

  • Ports 4 and 5 – DSP2

When you configure the port-mode speed for 150Gbps (8 QAM), the port pairs belonging to a DSP are coupled. Ensure that you configure the port-mode speed on each port of the port pair that belongs to the same DSP.

To configure the port mode speed, use the following commands:

Before you begin

Ensure that you shut down the controller before you configure the controller or restore a saved configuration.

SUMMARY STEPS

  1. configure
  2. controller optics r/s/i/p
  3. shutdown
  4. commit
  5. port-mode speed { 100G | 150G | 200G } mod { 16qam | 8qam |qpsk } fec { 15sdfec | 15sdfecde | 25sdfec | otu7staircase } diff { enable | disable }
  6. no shutdown
  7. commit

DETAILED STEPS

  Command or Action Purpose

Step 1

configure

Example:


RP/0/RP0/CPU0:router# configure

Enters global configuration mode.

Step 2

controller optics r/s/i/p

Example:


RP/0/RP0/CPU0:router(config)# controller optics 0/3/0/0

Enters optics controller configuration mode

Step 3

shutdown

Example:


RP/0/RP0/CPU0:router(config-Optics)# shutdown

Shuts down the optics controller.

Step 4

commit

Example:


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

Saves the configuration changes to the running configuration file and remains within the configuration session.

Step 5

port-mode speed { 100G | 150G | 200G } mod { 16qam | 8qam |qpsk } fec { 15sdfec | 15sdfecde | 25sdfec | otu7staircase } diff { enable | disable }

Example:


RP/0/RP0/CPU0:router(config-Optics)# port-mode speed 100G mod qpsk fec 15sdfec diff

Configures the port mode speed.

Step 6

no shutdown

Example:


RP/0/RP0/CPU0:router(config-Optics)# no shutdown

Removes the shutdown configuration on the optics controller.

Step 7

commit

Example:


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

Saves the configuration changes to the running configuration file.


Note

When you bring up the local optics controller, you might briefly see transient loss of signal (LOS) alarms on the console. This behavior might be observed during the initial tuning of the channel. 

PKT_INFRA-FM-2-FAULT_CRITICAL : ALARM_CRITICAL :LOS-P :DECLARE :CoherentDSP0/3/0/1: 
PKT_INFRA-FM-2-FAULT_CRITICAL : ALARM_CRITICAL :LOS-P :CLEAR :CoherentDSP0/3/0/1:

During the laser-on process, you might briefly see transient loss of line (LOL) alarms on the console. This alarm clears when the laser-on process is complete. 

PKT_INFRA-FM-3-FAULT_MAJOR : ALARM_MAJOR :CTP2 RX LOL :DECLARE ::  
PKT_INFRA-FM-3-FAULT_MAJOR : ALARM_MAJOR :CTP2 RX LOL :CLEAR ::

Note

On NCS-55A2-MOD-S and NC55-MOD-A-S with CFP2-DCO optics:

  • During the laser-on process, you might briefly see Optical Transport Network (OTN) alarms on the console. This alarm clears when the laser-on process is complete.
    PKT_INFRA-FM-6-FAULT_INFO : OTUK-BDI :DECLARE :CoherentDSP0/0/2/2:  
PKT_INFRA-FM-6-FAULT_INFO : OTUK-BDI :CLEAR :CoherentDSP0/0/2/2:
  • During the laser-on process, you might briefly see transient transmit power and receive power alarms on the console. These alarms are cleared when the laser-on process is complete.
    PKT_INFRA-FM-4-FAULT_MINOR : ALARM_MINOR :LO-RXPOWER :DECLARE :Optics0/0/2/0:  
PKT_INFRA-FM-4-FAULT_MINOR : ALARM_MINOR :LO-TXPOWER :DECLARE :Optics0/0/2/0:  
PKT_INFRA-FM-4-FAULT_MINOR : ALARM_MINOR :HI-RXPOWER :DECLARE :Optics0/0/2/0:  

PKT_INFRA-FM-4-FAULT_MINOR : ALARM_MINOR :LO-RXPOWER :CLEAR :Optics0/0/2/0:  
PKT_INFRA-FM-4-FAULT_MINOR : ALARM_MINOR :HI-RXPOWER :CLEAR :Optics0/0/2/0:  
PKT_INFRA-FM-4-FAULT_MINOR : ALARM_MINOR :LO-TXPOWER :CLEAR :Optics0/0/2/0:
  • When you bring up the local optics controller, you might see repeated remote faults on the console.
    PLATFORM-DPA-2-RX_FAULT : Interface HundredGigE0/0/2/2/0, Detected Remote Fault 
PLATFORM-DPA-2-RX_FAULT : Interface HundredGigE0/0/2/2/1, Detected Remote Fault 
PLATFORM-DPA-2-RX_FAULT : Interface HundredGigE0/0/2/2/0, Detected Local Fault 
PLATFORM-DPA-2-RX_FAULT : Interface HundredGigE0/0/2/2/1, Detected Local Fault 
PLATFORM-DPA-2-RX_FAULT : Interface HundredGigE0/0/2/2/0, Detected Remote Fault 
PLATFORM-DPA-2-RX_FAULT : Interface HundredGigE0/0/2/2/1, Detected Remote Fault

If you need to change the port-mode speed, ensure that you remove the existing port mode speed configuration by entering the no port-mode command. You can then change the port mode speed.

The following example shows how to change the port mode speed to 100Gbps.


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# controller optics 0/3/0/0
RP/0/RP0/CPU0:router(config-Optics)# shutdown
RP/0/RP0/CPU0:router(config-Optics)# commit
RP/0/RP0/CPU0:router(config-Optics)# no port-mode
RP/0/RP0/CPU0:router(config-Optics)# commit
RP/0/RP0/CPU0:router(config-Optics)# port-mode speed 100G mod qpsk fec 15sdfec diff enable
RP/0/RP0/CPU0:router(config-Optics)# commit
RP/0/RP0/CPU0:router(config-Optics)# no shutdown
RP/0/RP0/CPU0:router(config-Optics)# commit
RP/0/RP0/CPU0:router(config-Optics)# exit
RP/0/RP0/CPU0:router(config)#

To modify the default 25Gpbs mode into 10Gbps mode, perform the below configuration:

Before Cisco IOS XR Release 7.5.1:

RP/0/RP0/CPU0:router(config)# hw-module quad 0 location 0/0/CPU0

RP/0/RP0/CPU0:router(config-quad-0x0)# mode 10g

From Cisco IOS XR Release 7.5.1:

RP/0/RP0/CPU0:router(config)# hw-module quad 0 location 0/0/CPU0 instance 1 mode 10g

RP/0/RP0/CPU0:router(config-quad-0x0)# mode 10g


Note

A quad number always starts from 0 to the maximum supported number. The number of quads supported varies from platform to platform and the CLI validates it. For example, the NCS 540 Series Router supports two quads (0 and 1). If you enter X=3, the CLI returns an error.

Here, instance indicates the MPA card instance. It can range from 0-5. For Cisco NCS 540 Series Routers, it is always 0. Whereas, for Cisco NCS 5500 Series Routers, the instance can be between 0-5, adding 1 for every MPA instance. The default value is 0.

Starting with Cisco IOS XR Release 24.2.1, you can configure 50Gpbs mode only on NC-57-48Q2D-S and NC-57-48Q2D-SE-S line cards.


Note

A quad number always starts from 0 to the maximum supported number. The number of quads supported varies from platform to platform and the CLI validates it. For example, the NCS 540 Series Router supports two quads (0 and 1). If you enter X=3, the CLI returns an error.

Here, instance indicates the MPA card instance. It can range from 0-5. For Cisco NCS 540 Series Routers, it is always 0. Whereas, for Cisco NCS 5500 Series Routers, the instance can be between 0-5, adding 1 for every MPA instance. The default value is 0.


Note

To revert to the default 25Gbps mode, use the no form of the hw-module quad command.

After you configure the port-mode speed, you can configure the following interfaces:

  • 100G – Each optics controller configuration creates a single 100GE port:

    • interface HundredGigE r/s/i/p/0 (wherep = CTP2 port 0-5)

      0/3/0/0/0

      0/3/0/1/0

      0/3/0/2/0

      0/3/0/3/0

      0/3/0/4/0

      0/3/0/5/0

  • 200G – Each optics controller configuration creates two 100GE ports:

    • interface HundredGigE r/s/i/p/0, r/s/i/p/1 (wherep = CTP2 port 0-5

      0/3/0/0/0, 0/3/0/0/1

      0/3/0/1/0, 0/3/0/1/1

      0/3/0/2/0, 0/3/0/2/1

      0/3/0/3/0, 0/3/0/3/1

      0/3/0/4/0, 0/3/0/4/1

      0/3/0/5/0, 0/3/0/5/1

  • 150G (coupled) – Coupled optics controller configuration creates three 100GE port:

    • interface HundredGigE r/s/i/p/0, r/s/i/p/1, r/s/i/p+1/0 (wherep = CTP2 port: 0, 2, 4 [port p and p +1 are coupled])

      0/3/0/0/0, 0/3/0/0/1, 0/3/0/1/0

      0/3/0/2/0, 0/3/0/2/1, 0/3/0/3/0

      0/3/0/4/0, 0/3/0/4/1, 0/3/0/5/0

For more information, see the Configuring Ethernet Interfaces chapter.

Configure Lower Port Speeds for Dual-Mode Optical Modules

Table 4. Feature History Table

Feature Name

Release

Description

Configure lower port speeds for dual-mode optical modules

Release 7.9.1

You can now configure the lower port speed using simple CLI keyword: speed or quad and switch between the higher and lower speeds without changing the optical module.

Earlier, by default, only the higher port speed was available.

The feature introduces new XPaths for YANG Data Model: Cisco-IOS-XR-optics-speed-cfg.yang

(see GitHub, YANG Data Models Navigator.)

A dual-mode optic operates in two port speeds, a higher or a lower speed. For more information on how to configure the Port Mode Speed, refer Configure Port Mode Speed.

From Cisco IOS XR Software Release 7.9.1 onwards, you can configure the following dual-mode optical modules to operate on their lower port speeds:

  • SFP-10/25G-CSR-S

  • SFP-10/25G-LR-S

  • SFP-10/25G-LR-I

  • SFP-10/25G-BXD-I

  • SFP-10/25G-BXU-I

  • QSFP-40/100-SRBD

Configuration

To configure a lower port speed use the following command:

hw-module quadnumber location node-id [ instance mpa-instance ] mode mode-type

A quad number always starts from 0 to the maximum supported number (0,1,2,3...n). Each quad houses a group of 2 or 4 ports. The number of quads supported varies from platform to platform and the CLI validates it.

Based on the platform support, configure the optical module to operate at lower port speed by using the CLI keywords: speed or quad.

For more information on the platforms supported, refer Optics Compatibility Matrix.

Examples

In the following example, quad keyword is used in the command to change the speed from 25G to 10G: 

Router (config)#hw-module quad 2 location 0/0/CPU0 instance 2 mode 10g
Router (config)#commit
Verification

Use the show controller command to verify the configuration: 

Router #show controller tengige 0/2/2/0 internal
Mon Mar  6 11:43:02.036 UTC

Internal data for interface: TenGigE0/2/2/0
Subport Number      : 255
Port Number         : 0 *
Bay Number          : 2 *
Board Type          : 0x000069bc *
Port Type           : 10GE *
Bandwidth(Kbps)     : 10000000 *
Transport mode      : LAN *
BIA MAC addr        : 008a:96f5:2d60
Oper. MAC addr      : 008a:96f5:2d60
Egress MAC addr     : 008a:96f5:2d60
Port Available      : true *
Status polling is   : disabled *
Status events are   : disabled
I/F Handle          : 0x04000210 *
Cfg Link Enabled    : enabled
H/W Tx Enable       : yes
MTU                 : 1514 *
H/W Speed           : 10 Gbps *
H/W Duplex          : Full *
H/W Loopback Type   : None *
FEC                 : Not Configured *
H/W FlowCtrl Type   : Disabled *
H/W AutoNeg Enable  : Off *
H/W Link Defects    : Link Local Fault *
Link Up             : no *
Link Led Status     : Yellow On *
Pluggable Present   : Yes *
Pluggable Type      :
Pluggable PID       :  *
Pluggable Compl.    : Third Party Optics

In the following example, speed keyword is used in the command to change the speed from 100G to 40G: 

Router (config)#controller optics 0/0/1/1
Router (config)#speed 40g
Router (config)#commit
Verification

Use the show controller command to verify the configuration: 

Router #show controller fortyGigE 0/1/0/34 internal
Mon Mar  6 11:39:22.635 UTC

Internal data for interface: FortyGigE0/1/0/34
Subport Number      : 255
Port Number         : 34 *
Bay Number          : 0 *
Board Type          : 0x0000698f *
Port Type           : 40GE *
Bandwidth(Kbps)     : 40000000 *
Transport mode      : LAN *
BIA MAC addr        : 008a:96f5:2d18
Oper. MAC addr      : 008a:96f5:2d18
Egress MAC addr     : 008a:96f5:2d18
Port Available      : true *
Status polling is   : disabled *
Status events are   : disabled
I/F Handle          : 0x02001a08 *
Cfg Link Enabled    : enabled
H/W Tx Enable       : yes
MTU                 : 1514 *
H/W Speed           : 40 Gbps *
H/W Duplex          : Full *
H/W Loopback Type   : None *
FEC                 : Not Configured *
H/W FlowCtrl Type   : Disabled *
H/W AutoNeg Enable  : Off *
H/W Link Defects    : No Fault *
Link Up             : yes *
Link Led Status     : Green ON *
Pluggable Present   : Yes *
Pluggable Type      : QSFP28 100G SR BD
Pluggable PID       : QSFP-40/100-SRBD *
Pluggable Compl.    : Compliant

Note

You can configure the port in 10G or revert to 25G using no form of the command:

Use the following command to revert the speed to 25G.

Router (config)#no hw-module quad 2 location 0/0/CPU0 instance 2 mode 10g
Router (config)#commit

Use the following command to revert the speed to 100G.

Router (config)#no controller optics 0/0/1/1 speed 40g
Router (config)#commit

Configuring Wavelength

To configure wavelength, use the following commands:

Before you begin

  • Before configuring the wavelength, use the show controllers opticsr/s/i/p dwdm-carrrier-map command to display the wavelength and channel mapping for optics controllers.

  • You must shut down the controller before you configure the controller or restore a saved configuration.

SUMMARY STEPS

  1. configure
  2. controller optics r/s/i/p
  3. shutdown
  4. commit
  5. dwdm-carrier {100MHz-grid frequency frequency } | {50GHz-grid [ frequency frequency | channel-number ] }
  6. no shutdown
  7. commit

DETAILED STEPS

  Command or Action Purpose

Step 1

configure

Example:


RP/0/RP0/CPU0:router# configure

Enters global configuration mode.

Step 2

controller optics r/s/i/p

Example:


RP/0/RP0/CPU0:router(config)# controller optics 0/3/0/1

Enters optics controller configuration mode.

Step 3

shutdown

Example:


RP/0/RP0/CPU0:router(config-Optics)# shutdown

Shuts down the optics controller.

Step 4

commit

Example:


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

Saves the configuration changes to the running configuration file and remains within the configuration session.

Step 5

dwdm-carrier {100MHz-grid frequency frequency } | {50GHz-grid [ frequency frequency | channel-number ] }

Example:


RP/0/RP0/CPU0:router(config-Optics)# dwdm-carrier 100MHz-grid frequency 1960875

Configures the frequency on the trunk port.

Step 6

no shutdown

Example:


RP/0/RP0/CPU0:router(config-Optics)# no shutdown

Removes the shutdown configuration on the optics controller.

Step 7

commit

Example:


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

Saves the configuration changes to the running configuration file and remains within the configuration session.

To configure a DWDM carrier with the required frequency:
RP/0/RP0/CPU0:router#config
RP/0/RP0/CPU0:router(config)#controller Optics0/3/0/0
RP/0/RP0/CPU0:router(config-Optics)#dwdm-carrier
RP/0/RP0/CPU0:router(config-Optics)#dwdm-carrier 100MHz-grid
RP/0/RP0/CPU0:router(config-Optics)#dwdm-carrier 100MHz-grid frequency
RP/0/RP0/CPU0:router(config-Optics)#dwdm-carrier 100MHz-grid frequency 1960625

The output of show run controller optics 0/3/0/0 command is: 

RP/0/RP0/CPU0:router#show run controller optics 0/3/0/0
Wed Nov  6 13:47:33.178 UTC
controller Optics0/3/0/0
transmit-power -7
port-mode speed 100G mod qpsk fec 25sdfec diff disable
dwdm-carrier 100MHz-grid frequency 1960625

Note

When you bring up the local optics controller, you might briefly see transient loss of signal (LOS) alarms on the console. This behavior might be observed during the initial tuning of the channel. 


PKT_INFRA-FM-2-FAULT_CRITICAL : ALARM_CRITICAL :LOS-P :DECLARE :CoherentDSP0/3/0/1: 
PKT_INFRA-FM-2-FAULT_CRITICAL : ALARM_CRITICAL :LOS-P :CLEAR :CoherentDSP0/3/0/1:

During the laser-on process, you might briefly see transient loss of line (LOL) alarms on the console. This alarm is cleared when the laser-on process is complete. 


PKT_INFRA-FM-3-FAULT_MAJOR : ALARM_MAJOR :CTP2 RX LOL :DECLARE ::  
PKT_INFRA-FM-3-FAULT_MAJOR : ALARM_MAJOR :CTP2 RX LOL :CLEAR ::

Configuring Coherent DSP Controller

You can configure the administrative state for the Coherent DSP controller. To configure the Coherent DSP controller, use the following commands.


Note

The coherent DSP controller doesn’t support Q factor, Q margin, and post FEC BER reporting. Therefore, no threshold crossing alert (TCA) is raised for these parameters.

SUMMARY STEPS

  1. configure
  2. controller coherentDSP r/s/i/p
  3. secondary-admin-state admin-state
  4. commit

DETAILED STEPS

  Command or Action Purpose

Step 1

configure

Example:


RP/0/RP0/CPU0:router# configure

Enters global configuration mode.

Step 2

controller coherentDSP r/s/i/p

Example:


RP/0/RP0/CPU0:router(config)# controller coherentDSP 0/3/0/1

Enters Coherent DSP optics controller configuration mode.

Step 3

secondary-admin-state admin-state

Example:


RP/0/RP0/CPU0:router(config-CoDSP)# secondary-admin-state maintenance

Configures the administrative state of the controller indicating that the controller is under maintenance.

Step 4

commit

Example:


RP/0/RP0/CPU0:router(config-CoDSP)# commit

Saves the configuration changes to the running configuration file and remains within the configuration session.

Configuring Performance Monitoring

You can configure the performance monitoring parameters for the optics and Coherent DSP controllers. To configure PM parameters, use the following commands.

SUMMARY STEPS

  1. configure
  2. controller { optics| coherentDSP } r/s/i/p
  3. pm { 30-sec | 15-min | 24-hour } { optics | fec | otn } [ report | threshold value]
  4. commit

DETAILED STEPS

  Command or Action Purpose

Step 1

configure

Example:


RP/0/RP0/CPU0:router# configure

Enters global configuration mode.

Step 2

controller { optics| coherentDSP } r/s/i/p

Example:


RP/0/RP0/CPU0:router(config)# controller coherentDSP 0/3/0/1

Enters optics or Coherent DSP controller configuration mode.

Step 3

pm { 30-sec | 15-min | 24-hour } { optics | fec | otn } [ report | threshold value]

Example:


RP/0/RP0/CPU0:router(config-CoDSP)# pm 15-min otn threshold es-ne

Configures the performance monitoring parameters.

Step 4

commit

Example:


RP/0/RP0/CPU0:router(config-CoDSP)# commit

Saves the configuration changes to the running configuration file and remains within the configuration session.

Verify Controller Details

Execute the show controllers controller-type command to display and verify the controller details of the Optical Transport Network (OTN).


Note

Due to a hardware limitation, this command cannot display the Forward Error Correction (FEC) Correctable and FEC Uncorrectable alarms on the NCS 5500 12 port 10G Modular Port Adaptor (MPA) with PID NC55-MPA-12T-S. 


Router# show controllers otu20/0/2/1
Thu Jul 14 10:41:57.642 UTC
 
Port                                            : OTU2 0/0/2/1
Controller State                                : Down
LED state                                       : Red Flashing
Inherited Secondary State                       : Normal
Configured Secondary State                      : Normal
Derived State                                   : In Service
Loopback mode                                   : None
BER Thresholds                                  : SF = 1.0E-6  SD = 1.0E-7
Performance Monitoring                          : Enable
 
Alarm Information:
LOS = 0 LOF = 1 LOM = 0
OOF = 1 OOM = 1 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 = 0
FLEXO-LOF = 0  
Detected Alarms                                 : LOF OOF OOM
 
OTU TTI Received
 
FEC mode                                        : STANDARD
 
AINS Soak                                       : None
AINS Timer                                      : 0h, 0m
AINS remaining time                             : 0 seconds

Execute the show controllers coherentDSP command to display status and configuration information for interfaces configured as coherent DSP controllers. 

Router#show controllers coherentDSP 0/0/0/13
Thu May 27 06:56:37.505 UTC

Port                                            : CoherentDSP 0/0/0/13
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                                       : 400.0Gb/s

Alarm Information:
LOS = 32        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 = 0
FLEXO-LOF = 43
Detected Alarms                                 : None

Bit Error Rate Information
PREFEC  BER                                     : 8.5E-04
POSTFEC BER                                     : 0.0E+00
Q-Factor                                        : 9.90 dB

Q-Margin                                        : 2.70dB

OTU TTI Received

Execute the show controllers optics command to display status and configuration information about the interfaces configured as optics controller. 

Router#show controllers optics 0/0/0/7
 Controller State: Up
 Transport Admin State: In Service
 Laser State: On
 LED State: Green
 FEC State: FEC ENABLED
 Optics Status
         Optics Type:  QSFPDD 400G ZR
         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 = 55
         WVL-OOL = 0                MEA  = 0
         IMPROPER-REM = 0
         TX-POWER-PROV-MISMATCH = 0
         Laser Bias Current = 0.0 
         Actual TX Power = -8.16 dBm
         RX Power = -7.85 dBm
         RX Signal Power = -7.55 dBm
         Frequency Offset = 5 MHz
         Performance Monitoring: Enable
         THRESHOLD VALUES
         ----------------
         Parameter                 High Alarm  Low Alarm  High Warning  Low Warning
         ------------------------  ----------  ---------  ------------  -----------
         Rx Power Threshold(dBm)          1.9      -28.2           0.0        -25.0
         Tx Power Threshold(dBm)          0.0      -15.0          -2.0        -16.0
         LBC Threshold(mA)               0.00       0.00          0.00         0.00
         Temp. Threshold(celsius)       80.00      -5.00         75.00        15.00
         Voltage Threshold(volt)         3.46       3.13          3.43         3.16
         LBC High Threshold = 98 %
         Configured Tx Power = -6.00 dBm
         Configured CD High Threshold = 80000 ps/nm
         Configured CD lower Threshold = -80000 ps/nm
         Configured OSNR lower Threshold = 9.00 dB
         Configured DGD Higher Threshold = 80.00 ps
         Baud Rate =  59.8437500000 GBd
         Modulation Type: 16QAM
         Chromatic Dispersion 2 ps/nm
         Configured CD-MIN -2400 ps/nm  CD-MAX 2400 ps/nm
         Second Order Polarization Mode Dispersion = 87.00 ps^2
         Optical Signal to Noise Ratio = 36.30 dB
         Polarization Dependent Loss = 0.40 dB
         Polarization Change Rate = 0.00 rad/s
         Differential Group Delay = 2.00 ps
         Temperature = 51.00 Celsius
         Voltage = 3.36 V
 Transceiver Vendor Details
         Form Factor            : QSFP-DD
         Optics type            : QSFPDD 400G ZR
         Name                   : CISCO-ACACIA
         OUI Number             : 7c.b2.5c
         Part Number            : DP04QSDD-E20-19E
         Rev Number             : 10
         Serial Number          : ACA2449003P
         PID                    : QDD-400G-ZR-S
         VID                    : ES03
         Firmware Version       : 61.12
         Date Code(yy/mm/dd)    : 20/12/03

Replace Optical Module

In this example, we are replacing QSFP-100G-SR4-S QSFP optics configured for 4x25 breakout with QSFP-40G-SR4 optics and configure it for 4x10 breakout.

  1. Delete the optical module configuration using the no breakout command. 

    Router# configure
Router(config)# controller optics 0/2/0/35
Router(config-Optics)# no breakout 4x25
Router(config-Optics)# commit

  2. Replace the QSFP-100G-SR4-S QSFP optical module with QSFP-40G-SR4 optical module.

  3. Configure 4x10 breakout for QSFP-40G-SR4 optical module.

    Router# configure
Router(config)# controller optics 0/2/0/35
Router(config-Optics)# breakout 4x10
Router(config-Optics)# commit