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Configuration Guide - Network Management and Monitoring

S9300 and S9300X V200R019C10

This document describes the configurations of Network Management and Monitoring, including SNMP, RMON, RMON2, LLDP, Performance Management, iPCA, NQA, Service Diagnosis, Mirroring, Packet Capture, Traffic Distribution, NetStream, sFlow, TWAMP Light, NETCONF, eMDI, and Intelligent Video O&M.

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.