To generate virtual machine and environmental traps from ESXi/ESX 3.5, 4.x, and ESXi 5.x hosts, you must configure and enable the embedded SNMP agent. You cannot use the Net-SNMP-based agent to generate these traps, although it can receive GET transactions and generate other types of traps.
This represents a change in behavior from ESX 3.0.x, in which the configuration file for the Net-SNMP-based agent controlled the generation of virtual machine traps. For more information, see Configuring SNMP on an ESX 3.0.x host (1008186).
In ESXi 5.1, SNMP is configured using esxcli rather than vicfg-snmp. In addition, you have the option to configure SNMP v3 traps and informs as well as the SNMP v1 and v2c traps available with previous versions of ESXi.
Run the vicfg-snmp.pl command from the Remote CLI or vSphere CLI to enable the SNMP agent and configure trap destinations. Each time you specify a target with the vicfg-snmp.pl command, the settings you specify overwrite all previously specified settings. To specify multiple targets, specify them in a single command, separated by commas.
To enable and configure SNMP traps:
Prior to ESXi 5.0, ESXi did not include a firewall.
Ensure that the SNMP protocol is open in the ESXi/ESX firewall. For more information, see:
11/26/2012 - Revised article to indicate that this procedure does not apply to ESXi 5.1, and added links to ESXi 5.1 documentation for this task. 10/20/2011 - Added under notes: For ESX 3.5, use the Remote CLI. For ESX 4.x and ESX 5.0 10/20/2011 - For ESX 5.0, snmp firewall port 161 is open by default, for more information see, vSphere 5 Documentation Center 10/20/2011 - Added note to run this procedure using vSphere CLI in ESX 4.x and ESXi 5.0 10/28/2011 - Added .pl to multiple entries 02/01/2012 - Added links to download vSphere CLI 04/16/2012 - Add full command to step 2. 09/20/2012 - Added string for ESXi 5.x in step 3. 09/10/2013 - Added log locations for SNMP configuration changes and agent logs.
Request a Product Feature
To request a new product feature or to provide feedback on a VMware product, please visit the Request a Product Feature page.