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S600-E 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, LLDP, NQA, Service Diagnosis, Mirroring, Packet Capture, and sFlow.

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NMS Failed to Receive Traps

NMS Failed to Receive Traps

Fault Description

On a device running SNMPv3 to communicate with the NMS, when you run the display trapbuffer command, you can see there are trap records in the trap buffer of the information center; however, the NMS cannot receive the traps from the device.

Fault Analysis

The device runs SNMPv3 to communicate with the NMS, but the trap message version is not specified on the trap destination. By default, the device sends traps in SNMPv1 version. Because the SNMP version set on the device is different from the SNMP version of trap messages sent by the device, the SNMP module on the device does not send trap messages. Despite not being sent, the generated trap messages are still stored in the trap buffer of the information center.


  1. Check the SNMP version running on the device.

    Run the display snmp-agent sys-info command to view the SNMP information, including system maintenance information, physical locations of devices, and SNMP version.

  2. Check the version of trap messages to be sent.

    Run the display snmp-agent target-host command to view target host information, such as target host IP address, VPN instance name, trap sending mode, secure character for sending traps, protocol version, and security level.

Updated: 2020-01-22

Document ID: EDOC1000178020

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