3 SNMP gateway

Overview

Zabbix SNMP gateway is an AgentX-extension for snmpd supporting both SNMP polling and trapping.

With Zabbix SNMP gateway it is possible to use the SNMP protocol to retrieve:

  • trigger data;
  • problem trigger data;
  • host group status (count of triggers by trigger status per group)

The data is retrieved by the OID, which is a combination of a common base and a specific suffix. The common base is set in the configuration file of SNMP gateway, for example:

  • BaseOID=1.3.6.1.4.1.3043.7.55 - for any trigger data;
  • ProblemBaseOID=1.3.6.1.4.1.3047.7.55 - for problem trigger data;
  • BaseOID=1.3.6.1.4.1.3046.7.55 - for host group status.

The OID suffix is set in the configuration on host triggers as a tag (for example, OIDSuffix:3) in the frontend.

In this case all information for the trigger will be available under OID=1.3.6.1.4.1.3043.7.55.X.3. “X” here will be the number of trigger data fields (i.e. 1 - suffix, 2 - ID, 3 - expression, 4 - description, etc.).

For a more detailed description and the configuration file example, see the readme file of SNMP gateway.

Installation and setup

See the readme file of SNMP gateway for instructions on:

  • installing and configuring snmpd;
  • enabling AgentX support;
  • configuring Zabbix SNMP gateway;
  • configuring SNMP traps for trigger state changes.

Retrieving data

With everything set up properly, you may use snmpwalk and snmpget commands to retrieve data:

  1. [user@localhost ~]# snmpget -v2c -c public 127.0.0.1 1.3.6.1.4.1.3043.7.55.2.3
  2.        SNMPv2-SMI::enterprises.3043.7.55.2.3 = INTEGER: 15247
  1. [user@localhost ~]# snmpwalk -v2c -c public 127.0.0.1 1.3.6.1.4.1.3043.7.55
  2.        SNMPv2-SMI::enterprises.3043.7.55.1.1 = INTEGER: 1
  3.        SNMPv2-SMI::enterprises.3043.7.55.1.3 = INTEGER: 3
  4.        SNMPv2-SMI::enterprises.3043.7.55.1.4 = INTEGER: 4
  5.        SNMPv2-SMI::enterprises.3043.7.55.1.5 = INTEGER: 5
  6.        SNMPv2-SMI::enterprises.3043.7.55.1.6 = INTEGER: 6
  7.        SNMPv2-SMI::enterprises.3043.7.55.1.10 = INTEGER: 10
  8.        SNMPv2-SMI::enterprises.3043.7.55.2.1 = INTEGER: 15367
  9.        SNMPv2-SMI::enterprises.3043.7.55.2.3 = INTEGER: 15247
  10.        SNMPv2-SMI::enterprises.3043.7.55.2.4 = INTEGER: 15365
  11.        SNMPv2-SMI::enterprises.3043.7.55.2.5 = INTEGER: 15366
  12.        SNMPv2-SMI::enterprises.3043.7.55.2.6 = INTEGER: 13493
  13.        SNMPv2-SMI::enterprises.3043.7.55.2.10 = INTEGER: 13503
  14.        ...
Filtering options

You may limit the problem trigger information in SNMP gateway configuration:

  • by severity (by default ProblemMinSeverity=-1)
  • by hiding acknowledged problems (by default ProblemHideAck=false)

You may limit the problem count per host group in SNMP gateway configuration:

  • by unknown state triggers (by default CountUnknown=-false)
  • by triggers with acknowlegded/unacknowledged/all problems (by default CountAcknowledgeStatus=all)