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Fat AP and Cloud AP V200R008C00 CLI-based Configuration Guide

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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).
Principles

Principles

Concepts

  • Mirrored port

    All the packets passing through a mirrored port are copied to a local observing port.

  • Local observing port

    In local packet mirroring, a local observing port is connected to a monitoring device and is used to export the packets copied from a mirrored port.

Port Mirroring

A packet passing through a mirrored port is copied and then sent to a specified monitoring device for analysis and monitoring, as shown in Figure 28-8.

Figure 28-8  Networking diagram of port mirroring

Port mirroring can be performed on the packets in the following directions:
  • Inbound: mirrors the packets that are received by the port.

  • Outbound: mirrors the packets that are sent by the port.

  • Bidirectional: mirrors the packets that are sent and received by the port.

NOTE:

If the mirrored port and observing port are added to the same port isolation group in Layer 2 isolation mode, the inbound traffic on the mirrored port is isolated and cannot reach the observing port; however, the outbound traffic on the mirrored port is not isolated and is still mirrored to the observing port.

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Updated: 2019-01-11

Document ID: EDOC1000176006

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