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TechNotes-Troubleshooting GPON ONU Profile Match state is Mismatch 01

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Troubleshooting GPON ONU Profile Match state is Mismatch

Troubleshooting GPON ONU Profile Match state is Mismatch

The service profile configured for an ONU on the OLT does not match the actual capabilities of the ONU. As a result, the GPON ONU matching status is mismatch, and services cannot be provisioned.

What Is a GPON ONU?

The GPON ONUs described in this document include ONTs and MDUs.

These two types of products belong to the optical network unit (ONU) in the GPON network. Therefore, these two types of products are referred to as GPON ONUs in this document.

ONT Introduction

The ONT is applied to Huawei FTTH (Fiber To The Home) solution.

Figure 1-1 FTTH Solution Network
  • The ONT is placed in the user's home and provides data, voice, RF, and Wi-Fi services for users through the user-side interface.
  • The ONT can be managed through the Web interface.

MDU Introduction

MDU is applied to Huawei FTTB (Fiber To The Building) , FTTC (Fiber To The Curb) solution.

Figure 1-2 FTTB/FTTC Solution Network

  • FTTB: The OLT is connected to the ONU in the outside of the building through optical fibers. The ONU is connected to each user through twisted pairs to provide voice, data, and video services for users in the building.
  • FTTC: The OLT is connected to the ONU in the roadside cabinet through optical fibers. The ONU is connected to each user through twisted pairs to provide voice, data, and video services for users in the cell.
  • The MDU can be managed through the CLI.

What Is a GPON ONU Profile Match state is Mismatch?

Context

The ONU matching status indicates whether the actual ONU capability is the same as the service profile bound to the ONU. The status includes: initial, mismatch, and match. To some extent, the matching status is determined by the ONU running status and configuration status.

  • The matching status of the ONU can be queried only when the ONU running status is online. The matching status is match when the actual hardware capability of ONU is the same as the ONU service profile bound with the ONU. Otherwise, the status is mismatch.

  • In other configuration states, the matching status is initial.

  • The ONU matching status does not affect the normal forwarding of the service flow, and only indicates whether the actual ONU capability is the same as the service profile bound to the ONU.

In practice, ONUs in the offline state are bulk pre-configured on the OLT to facilitate service provisioning. An ONU service profile and an ONU line profile are specified during such configurations. The ONU profiles together can be regarded as a virtual ONU. Subsequent services are configured based on this virtual ONU. Inconsistency between the capability set configured in the ONU profiles and the actual ONU capabilities involves the following two situations:

  • The configured capability set outmatches the actual ONU capabilities. If the ONU is bound to such ONU profiles, ONU configurations will fail to match when the ONU goes online.

  • The configured capability set undermatches the actual ONU capabilities. In this case, the ONU capabilities that are not covered by the ONU profiles will fail to be configured or applied.

Location Method

An ONU connected to a GPON port of an OLT can go online successfully, but the queried Match state of the ONU is displayed as mismatch by running the display ont info command on the OLT.

huawei#display ont info 0 3 0 0   
-----------------------------------------------------------------------------   
F/S/P                   : 0/3/0
ONT-ID                  : 0   
......  
Match state             : mismatch
......

When the queried Match state of the ONU is displayed as mismatch, check whether the capability set configured in the ONU service profile matches the actual ONU capabilities.

Troubleshooting GPON ONU Profile Match state is Mismatch

Run the display ont capability command to query the actual ONU capabilities. According to the data plan, modify the current ONU profiles, or bind matching ONU profiles to the ONU.

The fault that the GPON ONU matching status is mismatch can be located based on the fault scope as follows:

  • If this problem occurs on only one ONU, it is suggested to bind matching ONU profiles to the ONU.
    • If the OLT works in the distributed mode:

      1. Run the display ont-profile command to query the current ONU profiles that are configured on the OLT.

      2. If the OLT does not have matching ONU profiles, run the ont-profile add command to add matching ONU profiles.

      3. Run the ont modify command to bind the ONU profiles to the ONU.

    • If the OLT works in the profile mode:

      1. Run the display ont-srvprofile command to query the information about the ONU service profile and run the display ont-lineprofile command to query the information about the ONU line profile.

      2. If the OLT does not have matching ONU profiles, add matching ONU profiles by referring to Configuring a GPON ONT Profile in the GPON Feature Guide.

      3. In the GPON mode of the OLT, run the ont modify command to bind the ONU profiles to the ONU.

  • If this problem occurs on all the ONUs of the same type, the configurations of the ONU profiles may be incorrect.
    • If the OLT works in the distributed mode, the profiles that are bound to the ONU cannot be modified or deleted. In this case, bind matching ONU profiles to the ONU.

    • If the OLT works in the profile mode:

      1. Run the display ont-srvprofile command to query the information about the ONU service profile and run the display ont-lineprofile command to query the information about the ONU line profile.

      2. Modify the ONU profiles by referring to Configuring a GPON ONT Profile in the GPON Feature Guide.

Glossary

FTTB

Fiber To The Building

FTTC

Fiber To The Curb

FTTH

Fiber To The Home

MDU

Multi-Dwelling Unit

OLT

Optical Line Terminal

ONT

Optical Network Terminal

ONU

Optical Network Unit

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Updated: 2019-10-12

Document ID: EDOC1100108353

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