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NE40E-M2 V800R010C10SPC500 Configuration Guide - WAN Access 01

This is NE40E-M2 V800R010C10SPC500 Configuration Guide - WAN Access
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Configuring WDM Interfaces

Configuring WDM Interfaces

The physical layer of a WDM interface is configured in the WDM interface view, and service parameters are configured in the GE interface view.

Applicable Environment

WDM interfaces must be configured when the OTN is used to transmit Ethernet packets.

Pre-configuration Tasks

Before configuring WDM interfaces, complete the following tasks:

  • Powering on the Router and confirming that the self-check is successful

Configuration Procedure

Figure 10-3 Configuring WDM interfaces

Configuring Optical Parameters

Optical parameters are configured in the WDM interface view to allow the WDM interfaces at both ends of an optical fiber to communicate at the physical layer.

Context

Optical parameters of WDM interfaces must be configured to allow the WDM interfaces at both ends of an optical fiber to communicate at the physical layer. Service parameters can be configured only after optical parameters are configured. Currently, optical parameters of WDM interfaces on the NE40E are FEC and TTI.

  • FEC contained in the OTU overhead of the OTN frame is used for data error correction by using algorithms. NE40E supports two FEC modes: standard G.709 FEC and enhanced FEC. Compared with standard G.709 FEC, enhanced FEC improves algorithms by using the FEC code type with stronger forward error correction capability.

  • TTI is a byte string in the overhead of an OTU and or an ODU. Like the J byte in the SDH segment overhead, the TTI identifies the source and destination stations to which each optical fiber is connected to prevent incorrect connection. If the received TTI differs from the expected value, a TIM alarm is generated.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The interface view is displayed.

  3. Run set transfer-mode otn

    The interface is configured to work in OTN mode.

  4. Run display wavelength-map

    The channel corresponding to the wavelength to be configured is displayed.

    NOTE:

    Before setting a wavelength for an optical module, you need to run the display wavelength-map command to view the channel corresponding to the wavelength to be set, and then specify the channel in the wavelength-channel command.

  5. Run wavelength-channel channel-num

    The number of the channel corresponding to the WDM interface is set.

    NOTE:

    You must set the same wavelength for two connected WDM interfaces.

  6. Run optical-tx-power { attenuation attenuation-value | target target-value }

    The attenuation value and optical power for an optical module is configured.

  7. Run controller wdm interface-number

    The interface view is displayed.

  8. Run fec { standard | none | enhanced-i-4 | enhanced-i-7 }

    The FEC mode is configured for the WDM interface.

    NOTE:

    Two interconnected WDM interfaces must have the same FEC configurations.

  9. Run signal-coding { dqpsk | qpsk }

    The signal modulation mode of an interface is configured.

    NOTE:

    The DQPSK signal modulation mode is supported on interfaces in any FEC mode, but the QPSK signal modulation mode is supported only on interfaces in FEC mode of lhaul-sd.

  10. Run tti { otu | odu-pm } { expected | sent } 64byte-mode value

    The TTI is configured for the OTU or ODU.

    NOTE:

    The value on the sending end must be the same as the expected value set on the peer end of an optical fiber.

  11. Run otn sd-threshold sd-threshold

    The alarm thresholds on attenuation of optical transmission signals are set.

  12. (Optional) Run otn prefec-tca trigger-threshold trigger-coefficient trigger-power trigger-interval trigger-time-interval [ recover-threshold recover-coefficient recover-power ] [ recover-interval recover-time-interval ]

    Configure an alarm threshold and detection interval for FEC bit error ratio detection on an optical transport network (OTN).

    NOTE:

    To configure an alarm threshold and detection interval for FEC bit error ratio detection on an OTN, run the otn prefec-tca command. By default, FEC bit error ratio detection is enabled. The default alarm thresholds and detection intervals are used. If the FEC bit error ratio exceeds a specified threshold, the device reports an FEC bit error ratio alarm to the NMS. When the FEC bit error ratio falls below a specified threshold, the device reports an FEC bit error ratio clear alarm to the NMS.

  13. Run span span-value

    The span to estimate the OSNR of a line are set.

    When an optical amplifier (OA) resides between two connected OTN interfaces, run the span command to set a span based on the network situation, so that the non-linear OSNR of a line can be more accurately estimated to facilitate line adjustment.

  14. Run mapping-path { opu2-standard | opu2-non-standard | opu2e }

    A mapping mode for client signals is configured.

    NOTE:
    • The undo shutdown, loopback, clock, and ptp command configurations have been cleared from the Ethernet interface that the WDM interface corresponds to.

    • Interfaces that have different mapping modes cannot communicate with each other. The mapping-path command can be run only on 10GE OTN subcards.

  15. Run commit

    The configuration is committed.

Configuring Service Parameters

Configuring service parameters in the Ethernet interface view allows the interface to bear services.

Context

Before configuring service parameters, enter the Ethernet interface view. The configuration procedure is the same as that for 10GE LAN interfaces. For details, see Ethernet Interface Configuration.

Verifying the WDM Interface Configuration

After configurations of WDM interfaces are complete, verify the configuration.

Context

After configurations of WDM interfaces are complete, you can view information about interface configurations and status.

Procedure

  1. Run the display this command to check the configurations and status of a WDM interface.
  2. Run the display this interface command to check the statistics about a WDM interface.

Example

Run the display this interface command, and you can view the statistics about a WDM interfaces. For example:

<HUAWEI> system-view
[~HUAWEI] controller wdm 1/0/0
[~HUAWEI-Wdm1/0/0] display this interface
Wdm0/1/0 current state : UP (ifindex: 5)
Description: 
Factor/Module: CFP, Standard: C4S1-2D1-OTL3.4
The Vendor PN is TRC5B20EL-LW0U1
The Vendor Name is Opnext Inc.
Port BW: 40G, Transceiver max BW: 41.6Gbps, Transceiver Mode: Single Mode
Connector Type: LC, Transmission Distance: 10km
WaveLength: 850nm 850nm 850nm 850nm
Rx Warning range: [-13.71,  1.30]dBm, Tx Warning range: [-8.00,  3.30]dBm
Rx Power[0]: 0.88dBm, Tx Power[0]: 0.91dBm
Rx Power[1]: 0.63dBm, Tx Power[1]: 0.94dBm
Rx Power[2]: 0.77dBm, Tx Power[2]: 1.08dBm
Rx Power[3]: 0.32dBm, Tx Power[3]: 0.84dBm
    FEC Mode: Standard(default)
    OTN alarm:
        OTU layer:  none
        ODU layer:  none
        OPU layer:  none
    WDM Error Counter:
        SM_BEI                :0
        PM_BEI                :1
        SM_BIP                :0
        PM_BIP                :1
        FEC 0 error           :0
        FEC 1 error           :0
        FEC 0 and 1 type error:0
        FEC symbol error      :0
        FEC uncorrected error :82338208
        BER                   :0.00E-0
        BER after corrected   :0E-0
    Rx OTU TTI: ""
    Rx ODU TTI: ""
    Rx ODU TCM1 TTI: Not Support
    Rx ODU TCM2 TTI: Not Support
    Rx ODU TCM3 TTI: Not Support
    Rx ODU TCM4 TTI: Not Support
    Rx ODU TCM5 TTI: Not Support
    Rx ODU TCM6 TTI: Not Support
    Tx OTU TTI: ""
    Tx ODU TTI: ""
    Tx ODU TCM1 TTI: Not Support
    Tx ODU TCM2 TTI: Not Support
    Tx ODU TCM3 TTI: Not Support
    Tx ODU TCM4 TTI: Not Support
    Tx ODU TCM5 TTI: Not Support
    Tx ODU TCM6 TTI: Not Support
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Updated: 2019-01-02

Document ID: EDOC1100058399

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