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RTN510 V100 Typical Troubleshooting in Site Deployment 01

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Troubleshooting Data Service Failures

Troubleshooting Data Service Failures

This section describes the symptoms and possible causes when the RTN510 encounters a data service failure. In addition, this section describes the required tools, precautions, and procedures for rectifying the failure.

Symptom

The RTN510 fails to forward video service packets to the upstream device.

Possible Cause

  • Cause 1: The physical connection is faulty.
  • Cause 2: The E-Line or E-LAN service required for video service packet forwarding is not created, or the configured VLAN is inconsistent with video service packets.
  • Cause 3: The service forwarding path fails.

Tools, Instruments, and Materials

  • Web-based NMS

Procedure

  1. Cause 1: The physical connection is faulty.
    1. Check the physical connections between the RTN510 and upstream and downstream devices.
    2. Check for alarms on the RTN510. If there are physical connection alarms (such as ETH_LOS, ETH_LINK_DOWN, and MW_LOF) or error frame alarms (MAC_FCS_EXC and MAC_EXT_EXC), clear these alarms and ensure that the physical links are in the up state.
    3. Check whether service forwarding is restored. If not, go to 2.
  2. Cause 2: The E-Line or E-LAN service required for video service packet forwarding is not created, or the configured VLAN is inconsistent with video service packets.
    1. Video service packets carry VLAN tags.

      1. Check whether the E-Line or E-LAN service is configured on the RTN510 and whether related physical ports are configured in the service.

        If...

        Then...

        Yes

        Go to 2.a.ii.

        No

        Configure services as planned and check whether service forwarding is restored. If no, go to 3.

      2. Check whether the VLAN tag of the E-Line or E-LAN service and the encapsulation type of each port are consistent with the VLAN tag and encapsulation type carried in the video service packet.

        If...

        Then...

        No

        Delete the E-Line or E-LAN service, configure it as planned, and then check whether service forwarding is restored. If no, go to 3.

        Yes

        Go to 2.a.iii.

      3. If Encapsulation Type is set to 802.1Q, check that the TAG attribute of the port is correct. Then, check whether service forwarding is restored. If no, go to 3.

    2. Video service packets do not carry VLAN tags.

      1. Check whether the E-Line or E-LAN service is configured on the RTN510 and whether related physical ports are configured in the service.

        If...

        Then...

        Yes

        Go to 2.b.ii.

        No

        Configure the E-Line or E-LAN service as planned and check whether service forwarding is restored. If no, go to 3.

      2. Check the encapsulation type and TAG attribute of the related physical port to determine whether the packets that do not carry VLAN tags can be forwarded. If Encapsulation Type of the port is set to 802.1Q, set TAG to Hybrid or Access. For details, see "Service Configuration" in the RTN510 Service Configuration and Maintenance Guide. Check whether service forwarding is restored. If no, go to 3.

  3. Cause 3: The service forwarding path fails.
    1. The STP function is enabled on the port connecting the switch to the AP and RT, causing the service forwarding path to fail.
    2. Log in to the switch and disable the STP function. Then, check whether service forwarding is restored. If no, go to 4.
  4. If the failure persists, contact Huawei technical support engineers.

Reference Information

None

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Updated: 2019-03-19

Document ID: EDOC1100071541

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