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CX11x, CX31x, CX710 (Earlier Than V6.03), and CX91x Series Switch Modules V100R001C10 Configuration Guide 13

The documents describe the configuration of various services supported by the CX11x&CX31x&CX91x series switch modules The description covers configuration examples and function configurations.
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Packet Capture Overview

Packet Capture Overview

The packet capture function captures packets matching the specified rules. This function improves network maintenance efficiency and reduces maintenance costs.

As Internet develops, devices on a network transmit various services, and network administrators often need to capture packets on devices to locate faults. The packet capturing function allows devices to capture received packets for fault location. This function simplifies the configurations of packet analysis device and network monitoring device.

After the packet capturing function is enabled, the devices capture the packets matching certain conditions. The maintenance personnel can run commands to view information about captured packets or save the captured packets to the local storage media as *.cap files. The saved files can be downloaded for fault analysis. This function greatly improves maintenance efficiency and reduces maintenance costs.

The CX11x&CX31x&CX91x series switch modules can capture the following two types of packets:
  • Forwarded packets: If the device fails to forward traffic correctly, for example, the traffic does not match the traffic model, configure the packet capture function to capture forwarded packets for analysis. This allows the device to process invalid packets in time, ensuring that network data can be transmitted correctly.
  • Packets sent to the CPU: When a CPU fault occurs, such as the CPU usage is high, configure the packet capture function to capture packets sent to the CPU for analysis. This allows the device to process invalid packets in time, ensuring that the CPU works properly.
Updated: 2019-12-13

Document ID: EDOC1000041694

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