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Troubleshooting Guide

CloudEngine 16800, 12800, 12800E, 8800, 7800, 6800, and 5800 Series Switches

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Packet Header Capturing Function

Packet Header Capturing Function

The packet header capturing function copies packet headers from a mirrored port to an observing port for packet header analysis. This function helps you analyze and troubleshoot faults.

A device cannot analyze packet headers. The captured packet headers need to be analyzed by a PC with packet capturing software installed or a tester connected to the observing port.

The packets captured for troubleshooting may contain user communication information. Huawei will not collect or store users' communication information without prior user approval. Therefore, you must ensure that this function is used for legitimate purposes and within the boundaries defined by applicable laws and regulations. Ensure that your customers' privacy is protected when collecting communication information.

Mirroring Packet Headers to a Local Observing Port

As shown in Figure 5-10, the incoming packets on 10GE1/0/1 are mirrored to 10GE1/0/2, and the observing device directly connected to 10GE1/0/2 analyzes the packet headers.

Figure 5-10 Networking diagram of local mirroring

Perform the following steps to mirror packet headers to a local observing port.

  1. Configure 10GE1/0/2 on SwitchA as a local observing port.

    <HUAWEI> system-view
    [~HUAWEI] sysname SwitchA
    [*HUAWEI] commit
    [~SwitchA] observe-port 1 interface 10ge 1/0/2
    [~SwitchA] commit
  2. Configure 10GE1/0/1 on SwitchA as a mirrored port and set the mirroring direction to inbound.

    [~SwitchA] interface 10ge 1/0/1
    [~SwitchA-10GE1/0/1] port-mirroring observe-port 1 inbound
    [*SwitchA-10GE1/0/1] commit
Updated: 2020-01-07

Document ID: EDOC1000060766

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