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S12700 V200R011C10 Configuration Guide - Network Management and Monitoring

This document provides the configurations of network management and monitoring features supported by the product, including SNMP, RMON and RMON2, LLDP, Performance Management, iPCA, NQA, Service Diagnosis, Mirroring, Packet Capture, Traffic Distribution, NetStream, sFlow, and TWAMP Light.
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Overview of Packet Capture

Overview of Packet Capture

As Internet technologies develop, network devices need to transmit various services, and network administrators often capture packets to locate faults. The packet capture function simplifies the configurations on the packet analysis device and network monitoring device.

With the packet capture enabled, the devices capture the packets matching certain conditions and send these packets to a remote server. 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 device can capture the following two types of packets:
  • Service packets: If an error occurs in service traffic forwarding (for example, the traffic status does not match the traffic model), capture these packets for analysis so that the device can quickly identify invalid packets. This function ensures correct data transmission on the network.
  • Packets sent to the CPU: When a CPU fault occurs, such as a high CPU usage, capture these packets for analysis. This allows the device to process invalid packets in time, ensuring that the CPU works properly.
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Updated: 2019-10-21

Document ID: EDOC1000178113

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