# SNMP polling
<a name="notification-polling"></a>

AWS Elemental Conductor Live generates SNMP traps for activity on the cluster. You can set up to poll the SNMP interface for messages. (If you prefer to receive traps, see [SNMP polling](#notification-polling).)

You can interact with Conductor Live using a variety of network management systems. AWS Elemental products ship with the Net-SNMP ([http://www.net-snmp.org/](http://www.net-snmp.org/)) command line tools. These tools let you access the SNMP interface while you are 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 [Configuring a firewall and opening ports](network-firewall.md).
   + External access to the SNMP interface is enabled by default. To check the setting, access the **Settings** page on the Conductor Live 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 [MIBs in Conductor Live](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 in the cluster.

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