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Features of 800ZR and 800G OpenZR+

Describes the 800ZR and 800G OpenZR+ features like application selection, transmit output power, loopback, and so on. This topic also includes the configuration steps of these features.

Application Selection for 800G OpenZR+

Describes about application selection on 800G OpenZR+ optics and its configuration.

The 800ZR and 800G OpenZR+ optics advertises supported applications for a particular speed. You can select any of the application based on your requirement. You can also switch between these applications. See Table 1 for devices that support application selection.

Table 1: Supported Applications of 800G OpenZR+ Optics

Application

Host Interface Code Description

Media Interface Code Description

Speed

1

800GAUI-8 S C2M (Annex 120G)(81 or 0x51) 

800ZR-A, 150 GHz DWDM (108 or 0x6C)

800G

2

800GAUI-8 L C2M (Annex 120G)(82 or 0x52)

800ZR-A, 150 GHz DWDM (108 or 0x6C)

800G

3

400GAUI-4-S C2M (Annex 120G)(79 or 0x4F)

800ZR-A, 150 GHz DWDM (108 or 0x6C)

2x400G

4

400GAUI-4-L C2M (Annex 120G)(80 or 0x50)

800ZR-A, 150 GHz DWDM (108 or 0x6C)

2x400G

5

200GAUI-2-S C2M (Annex 120G)(77 or 0x4D)

800ZR-A, 150 GHz DWDM (108 or 0x6C)

4x200G

6

200GAUI-2-L C2M (Annex 120G)(78 or 0x4E)

800ZR-A, 150 GHz DWDM (108 or 0x6C)

4x200G

7

100GAUI-1-S C2M (Annex 120G)(75 0x4B)

800ZR-A, 150 GHz DWDM (108 or 0x6C)

8x100G

8

100GAUI-1-L C2M (Annex 120G)(76 or 0x4C)

800ZR-A, 150 GHz DWDM (108 or 0x6C)

8x100G

9 200GAUI-2-L C2M (Annex 120G)(77 or 0x4D) OpenZR+ ZR600-OFEC-8QAM(212) 3x200G
10 200GAUI-2-L C2M (Annex 120G)(78 0x4E) OpenZR+ ZR600-OFEC-8QAM(212) 3x200G
11 100GAUI-1-S C2M (Annex 120G)(75 0x4B) OpenZR+ ZR600-OFEC-8QAM(212) 6x100G
12 100GAUI-1-L C2M (Annex 120G)(76 0x4C) OpenZR+ ZR600-OFEC-8QAM(212) 6x100G
13 400GAUI-8 C2M (Annex 120E)(17 or 0x11) OpenZR+ ZR400-OFEC-QPSK(213) 1x400G
14 400GAUI-8 C2M (Annex 120E)(17 or 0x11) ZR400-OFEC-8QAM-HA(55) 1x400G
15 200GAUI-4 C2M (Annex 120E)(15 or 0xF) ZR400-OFEC-8QAM-HA(55) 2x200G

For example:

To display the configurable applications

  • Use the show interfaces diagnostics optics-applications <interface> command to display the configurable applications.

    Follow the guidelines below while configuring speed and application selection:

    • If configured speed and application selection do not match, you receive a The configuration is not supported due to speed mismatch alarm.

    • You can switch between short and long application selection code for the same speed.

    • If you configure Nx200G, then you receive a Invalid Port Speed Configuration, Refer 'show chassis pic' alarm. Configuration of host code, media code, and application selection id is not accepted and error message is logged.

    • For 1x400G speed, application selection ID 14 with media code ZR400-OFEC-8QAM-HA is the default choice. If you want to configure 1x400G with media code OpenZR+ ZR400-OFEC-QPSK (213), you can do it by host/media/application selection code configuration.

    • If the host side is configured with 8x100G and the line side with 1x800G, the link status mismatch is expected.

Configure Application Selection on 800G OpenZR+ Optics

Describes the steps to configure application selection on 800G OpenZR+ optical transceivers.

Execute the following steps to configure the 800G OpenZR+ optics:

  1. In configuration mode, go to the [edit interfaces interface-name] hierarchy level.
  2. Include the speed statement at the [edit interfaces interface-name] hierarchy level to configure the speed.
  3. Configure speed and channelization.

    To configure a different application for a speed, see Step 5.

  4. Display all configurable applications in the configured speed. You can use this information while executing Step 5.
  5. Change the application.
    1. Change to the [edit interfaces interface-name optics-options] hierarchy.
    2. Execute the following command in this hierarchy:

      Example:

  6. Display the output after you switch to a new application. The following output shows media id and host id as 108 and 79 respectively.

Transmit Optical Power for 800G OpenZR+

Describes transmit optical power and its ranges.

Optical Transmitter Power Management allows you to adjust the transmit optical power within a fiber-optic network, ensuring optimal signal strength and reliable network performance. This feature leverages a precise command to control the transmit (Tx) power settings, accommodating various vendor-specific modules with configurable ranges and resolution. By utilizing this functionality, you can adjust the power output to avoid issues like signal degradation or over-amplification. You can also tailor the settings to the specific hardware in use for enhanced network efficiency and troubleshooting.

Benefits

  • Ensures optimal signal strength by allowing precise adjustments to the transmit optical power, thereby maintaining reliable network performance.

  • Prevents signal degradation and over-amplification by enabling fine-tuning of power output, which helps avoid common issues in fiber-optic networks.

  • Enhances compatibility and performance by providing vendor-specific configurations, ensuring that power settings can be tailored to the specifications of different optical modules.

  • Facilitates efficient network planning and troubleshooting by allowing users to customize power settings based on specific ranges and resolutions, leading to more effective management of network operations

  • Improves overall network efficiency by enabling detailed adjustments to Tx power, which helps in achieving better signal quality and reduces the likelihood of network disruptions.

Configure Transmit Output Power

Describes the steps to configure transmit power.

When you configure transmit power, it is important to keep the value within a range. Keeping the transmit power value within the range ensures signal stability and network performance. The transmit power range varies between different vendors.

Execute the following steps to configure 800G OpenZR+:

  1. In configuration mode, go to the [edit interfaces interface-name] hierarchy level.
  2. Configure output power.
  3. Verify the target output power using the following command.

Optical Loopback

Describes about the supported loopback types options in 800G OpenZR+.

An optical loopback involves testing the transmit and receive capabilities of a fiber-optic interface. This is typically performed by connecting the transmit port to the receive port using a known good fiber cable, ensuring that both ports are operational and the fiber-optic connection is functioning as expected.

The 800G OpenZR+ supports the following loopback types:

  • host-side-in: Loop host side input back to output

  • host-side-out: Loop host side output back to input

  • media-side-in: Loop media side input back to output

  • media-side-out : Loop media side output back into input

Benefits of Optical Loopback

  • Enhance network diagnostics by allowing comprehensive testing of signal paths within optics modules, ensuring all internal connections are functioning correctly.

  • Maintain high signal integrity by enabling precise verification of both host-side and media-side signal loops, reducing the risk of undetected errors.

  • Increase network reliability by facilitating regular maintenance checks and immediate detection of issues, preventing potential network failures.

Use the following command to configure loopback options:

Signal Power

Describes the command to get the signal power performace.

The show interface diagnostics optics et-<x/x/x> command shows the Rx signal power in the mW/dBm format.