This is version 2.18 of the AWS Elemental Server documentation. This is the latest version. For prior versions, see the *Previous Versions* section of [AWS Elemental Conductor File and AWS Elemental Server Documentation](https://docs.aws.amazon.com/elemental-server/).

# Simple Network Management Protocol (SNMP) Polling
<a name="notification-polling"></a>

Rather than passively receiving SNMP traps from AWS Elemental Server, you can actively poll the SNMP interface.

You can interact with AWS Elemental Server using a variety of network management systems. AWS Elemental products ship with the Net-SNMP (http://www.net-snmp.org/) command line tools to access the SNMP interface while logged into the system directly or over SSH. Examples in this document are given using net-snmp commands.

**To set up SNMP polling**

1. Either disable the node firewall, or enable external access to SNMP interface. 
   + For help disabling the firewall, see [Open Ports on the Firewall for AWS Elemental Server Nodes](config-wrkr-cf-cg-firewall.md).
   + External access to the SNMP interface is enabled by default. To check the setting, access the **Settings** page on the AWS Elemental Server web interface and choose **SNMP**.

1. Query either individual variables, or the entire SNMP interface.

**To query individual variables**  
Use the Net-SNMP tools to query variables as follows.

   ```
   snmpget -c elemental_snmp -v2c -m {{<MIB>}} 
           localhost {{MIBvariable}}
   ```  
**Example**  

   ```
   snmpget -c elemental_snmp -v2c -m {{ELEMENTAL-MIB}} 
             localhost {{serviceStatus}}
   ```

   For a list of MIBs and their variables, see [Management Information Bases (MIBs) in AWS Elemental Server](notification-polling-mibs.md).

**To query the entire SNMP interface**  
Use the Net-SNMP tools to do an snmpwalk to gather information about all of the running channels.

   ```
   snmpwalk -c elemental_snmp -v2c -m ELEMENTAL-MIB:ELEMENTAL-LIVE-MIB localhost
       elemental
   ```