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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 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). |
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:
|
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. |
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.
This section contains the following procedures:
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:
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)
| Command or Action | Purpose | |
|---|---|---|
| Step 1 |
configure Example: |
Enters global configuration mode. |
| Step 2 |
controller optics r/s/i/p Example: |
Enters optics controller configuration mode. |
| Step 3 |
shutdown Example: |
Shuts down the optics controller. |
| Step 4 |
commit Example: |
Saves the configuration changes to the running configuration file and remains within the configuration session. |
| Step 5 |
rx-high-threshold rx-high Example: |
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: |
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: |
Removes the shutdown configuration on the optics controller. |
| Step 8 |
commit Example: |
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. 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. The laser-on process can take up to 120 seconds to complete. |
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 |
The line card has three Digital Signal Processors (DSPs), one for each pair of ports:
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:
Ensure that you shut down the controller before you configure the controller or restore a saved configuration.
| Command or Action | Purpose | |
|---|---|---|
| Step 1 |
configure Example: |
Enters global configuration mode. |
| Step 2 |
controller optics r/s/i/p Example: |
Enters optics controller configuration mode |
| Step 3 |
shutdown Example: |
Shuts down the optics controller. |
| Step 4 |
commit Example: |
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: |
Configures the port mode speed. |
| Step 6 |
no shutdown Example: |
Removes the shutdown configuration on the optics controller. |
| Step 7 |
commit Example: |
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. 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. |
Note |
On NCS-55A2-MOD-S and NC55-MOD-A-S with CFP2-DCO optics:
|
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)#
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.
To configure wavelength, use the following commands:
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.
| Command or Action | Purpose | |
|---|---|---|
| Step 1 |
configure Example: |
Enters global configuration mode. |
| Step 2 |
controller optics r/s/i/p Example: |
Enters optics controller configuration mode. |
| Step 3 |
shutdown Example: |
Shuts down the optics controller. |
| Step 4 |
commit Example: |
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: |
Configures the frequency on the trunk port. |
| Step 6 |
no shutdown Example: |
Removes the shutdown configuration on the optics controller. |
| Step 7 |
commit Example: |
Saves the configuration changes to the running configuration file and remains within the configuration session. |
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 1960625The 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 1960625Note |
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. 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. |
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. |
| Command or Action | Purpose | |
|---|---|---|
| Step 1 |
configure Example: |
Enters global configuration mode. |
| Step 2 |
controller coherentDSP r/s/i/p Example: |
Enters Coherent DSP optics controller configuration mode. |
| Step 3 |
secondary-admin-state admin-state Example: |
Configures the administrative state of the controller indicating that the controller is under maintenance. |
| Step 4 |
commit Example: |
Saves the configuration changes to the running configuration file and remains within the configuration session. |
You can configure the performance monitoring parameters for the optics and Coherent DSP controllers. To configure PM parameters, use the following commands.
| Command or Action | Purpose | |
|---|---|---|
| Step 1 |
configure Example: |
Enters global configuration mode. |
| Step 2 |
controller { optics| coherentDSP } r/s/i/p Example: |
Enters optics or Coherent DSP controller configuration mode. |
| Step 3 |
pm { 30-sec | 15-min | 24-hour } { optics | fec | otn } [ report | threshold value] Example: |
Configures the performance monitoring parameters. |
| Step 4 |
commit Example: |
Saves the configuration changes to the running configuration file and remains within the configuration session. |
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