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Configuration Guide - Network Management and Monitoring

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of Network Management and Monitoring, including SNMP, RMON, NETCONF, OpenFlow, LLDP, NQA, Mirroring, Packet Capture, Packet Trace, Path and Connectivity Detection Configuration, NetStream, sFlow, and iPCA.
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Overview of Packet Capture

Overview of Packet Capture

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 CE8800, CE7800, CE6800, and CE5800 series switches 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: 2019-04-20

Document ID: EDOC1100075365

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