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NE40E-M2 V800R010C10SPC500 Configuration Guide - System Management 01

This is NE40E-M2 V800R010C10SPC500 Configuration Guide - System Management
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Licensing Requirements and Limitations for 1588V2--M2F

Licensing Requirements and Limitations for 1588V2--M2F

Licensing Requirements

BOM

License Control Item

Description

Minimum Version Requirement

81400613

NE40E-M2 Series 1588v2 Function License

Controllable feature:

This license controls 1588v2. Each device requires one such license to support 1588v2. Boards that support 1588v2 need to be installed.

V800R006

Restrictions and Guidelines

Restrictions

Guidelines

Impact

The device supports either PTP (1588v2/G.8275.1) or 1588 ACR.

Do not deploy PTP (1588v2/G.8275.1) and 1588 ACR client at the same time.

No usage scenario is available.

Due to hardware limitations in G.8273.2, the NE40E-M2E/NE40E-M2F do not support the following indicators:

1, The indicators in section 7.3.1 of ITU-T G.8273.2 are not supported:low-pass, bandwidth between 0.05hz and 0.1hz, and gain is less than 0.1dB.

2, The indicators in section 7.3.2 of ITU-T G.8273.2 are not supported:band pass, low-end ending frequency between 0.05hz and 0.1hz, high-end ending frequency between 1hz and 10hz, and passband gain of less than 0.2dB.

3, The indicators in section 7.4.1.2 of ITU-T G.8273.2 are not supported:in case of SyncE ring network switching, the output must comply with the template (see Annex B). Other G.8273.2 indicators can be supported.

None. Router hardware can basically meet time synchronization performance indicators.

The requirement for G.8273,2 time synchronization performance cannot be met.

The automatic measurement of ring network asymmetry has the following limitations:
  • This function applies only to scenarios where fibers on the ring network become faulty and then are restored. In other scenarios such as adding nodes to a ring, manual measurement is required.
  • Only the ring network devices in BC mode support automatic measurement of ring network asymmetry.
  • Time out-of-lock or device reset (such as device power-off or board resetting) is not allowed during ring network measurement of the involved NEs and their upstream NEs.
  • When the alarm about a fiber length change is generated, the associated engineers need to confirm such change and clear the alarm. The operations that may cause clock source switching (such as disabling interfaces or modifying NE configurations) are not allowed before the alarm is cleared.
  • The scenarios where multiple points of failure occur and the backup path is unavailable are out of the scope of the solution.
  • When an alarm about a failure to calculate the fiber length change is generated, the fiber asymmetry needs to be manually measured and restored. The measured fiber asymmetry value must be sent to NEs before the NEs switch to the normal tracing path.
  • Automatic measurement is not supported in scenarios where a fiber fault occurs on the slave or passive interface in the transmit direction and the interface does not go Down and then Up.

Use the automatic measurement of ring network asymmetry as instructed.

The use of automatic measurement of ring network asymmetry is affected.

When the introduced signals are of the 1PPS type, configure the protocol standard of TOD information to be consistent with the external BITS0, BITS1, or BITS2 clock signal type as required.

None

Time synchronization is affected.

The slaveonly function on the OC is mutually exclusive with the static 1588v2 function.

None

Time synchronization is affected.

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Updated: 2019-01-02

Document ID: EDOC1100058392

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