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NE40E V800R010C00 Configuration Guide - System Monitor 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).
Telemetry Precautions

Telemetry Precautions

Precautions

Preventive Measures

Impact

1. If an eTM subcard is installed and HQoS is configured for the bandwidth, the HQoS function of common TE traffic statistics collection is implemented by the eTM subcard although the Telemetry function is implemented by the NP. Therefore, the Telemetry statistics and common traffic statistics may be different.

2. In inter-board scenarios such as the TE HSB switchover and outbound interface change, Telemetry statistics are reset and statistics collection starts from 0 after the outbound interface is changed, which is different from common TE traffic statistics collection.

3. When common TE traffic statistics collection is switched between the CAR and statistics ID modes, Telemetry statistics and common TE traffic statistics may be different.

N/A

The Telemetry statistics are different from common TE traffic statistics.

1. If the number of collected instances exceeds the capability provided by the device, the sampling period is automatically prolonged. For example, if a user configures a sampling task to sample all interfaces within 100 ms and a total of 20 interfaces are available, the 20 interfaces can be sampled every 100 ms. If there are 200 interfaces in total, the interface sampling can be performed once a second.

2. Telemetry supports multi-level flow control to avoid heavy traffic. Each board is restricted to report data to the main control board at a rate of 60 instances every 100 ms.

3. If a large number of subscription tasks or repetitive subscription tasks are configured, or the device is busy, Telemetry supports CPU restrictions. When the CPU usage is higher than 50%, the Telemetry sampling period is forcibly prolonged. If the CPU usage is between 50% and 70%, the sampling period is prolonged by two times. If the CPU usage is between 70% and 90%, the sampling period is prolonged by five times. If the CPU usage is higher than 90%, the sampling period is prolonged by 10 times.

Reduce the number of instances to be collected.

Configure a long sampling period.

Data collection efficiency is reduced.

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Updated: 2018-07-12

Document ID: EDOC1100028538

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