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Filter Out Duplicate SNMP Requests

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Article ID: KB19172 KB Last Updated: 04 Mar 2017Version: 2.0
Summary:

Symptoms:
If a network management station retransmits a Get, GetNext, or GetBulk SNMP request too frequently to a device, that request might interfere with the processing of previous requests and slow down the response time of the agent. Filtering these duplicate requests improves the response time of the SNMP agent. JUNOS enables you to filter out duplicate get, getNext, and getBulk SNMP requests.

JUNOS uses the following information to determine if an SNMP request is a duplicate:

• Source IP address of the SNMP request
• Source UDP port of the SNMP request
• Request ID of the SNMP request
Solution:
To enable filtering of duplicate SNMP requests in JUNOS, include the "filter-duplicates" statement at the [edit snmp] hierarchy level:

[edit snmp]
filter-duplicates;

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