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:

[user@localhost ~]# snmpget -v2c -c public 127.0.0.1 1.3.6.1.4.1.3043.7.55.2.3
       SNMPv2-SMI::enterprises.3043.7.55.2.3 = INTEGER: 15247

[user@localhost ~]# snmpwalk -v2c -c public 127.0.0.1 1.3.6.1.4.1.3043.7.55
       SNMPv2-SMI::enterprises.3043.7.55.1.1 = INTEGER: 1
       SNMPv2-SMI::enterprises.3043.7.55.1.3 = INTEGER: 3
       SNMPv2-SMI::enterprises.3043.7.55.1.4 = INTEGER: 4
       SNMPv2-SMI::enterprises.3043.7.55.1.5 = INTEGER: 5
       SNMPv2-SMI::enterprises.3043.7.55.1.6 = INTEGER: 6
       SNMPv2-SMI::enterprises.3043.7.55.1.10 = INTEGER: 10
       SNMPv2-SMI::enterprises.3043.7.55.2.1 = INTEGER: 15367
       SNMPv2-SMI::enterprises.3043.7.55.2.3 = INTEGER: 15247
       SNMPv2-SMI::enterprises.3043.7.55.2.4 = INTEGER: 15365
       SNMPv2-SMI::enterprises.3043.7.55.2.5 = INTEGER: 15366
       SNMPv2-SMI::enterprises.3043.7.55.2.6 = INTEGER: 13493
       SNMPv2-SMI::enterprises.3043.7.55.2.10 = INTEGER: 13503
       ...

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 acknowledged/unacknowledged/all problems (by default CountAcknowledgeStatus=all)