This page is intended to provide a troubleshooting process for problems involving SNMP, such as SNMP configuration validation, snmpd daemon status, port, rules, traffic captures, mibs translations, possible failures/errors.
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| Number | Description |
|---|---|
| 161 | SNMP |
| 162 | SNMP-trap |
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snmpd daemon status validation
Procedure to validate if the snmpd daemon is correctly found on the NMIS server.
NMIS server snmp configuration
Tutorial on how to configure SNMP to monitor our server, we will focus on CentOS as it is one of the most widespread distributions for servers. Except for the installation, the rest is similar in other distributions.
Snmp queries to devices
The most widely used SNMP versions are SNMP version 1 (SNMPv1) and SNMP version 2 (SNMPv2). SNMP version 3 (SNMPv3) includes important changes with respect to previous versions, especially in security issues; however, its acceptance has been very low due to some implementation problems and incompatibilities.
The snmpwalk command will be used for these queries.
Examples of command execution.
SNMPBULKWALK
snmpbulkwalk is an SNMP application that uses SNMP GETBULK requests to query a network entity efficiently for a tree of information.
Procedure for translating MIBS
One of the most common issues that users encounter with SNMP Traps and MIB files are that most MIB files require other MIB files to be loaded on the system so they can be fully translated. Solving this issue require that those needed MIB files are gathered and translated appropriately.
Details of the procedure.
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