Please Note: This is beyond Solarwinds Support. Support will not help in setting up your Devices. This is due to different Security Policies we do not want to be held liable for.
You can try the below steps .
Configuration for embedded SNMP for ESX Classic and ESXi 4.0 and 4.1
If it needs to be re-created, a default snmp.xml file looks like this:
Edit the snmp.xml file in the /etc/vmware/ directory. After you edit the file you will need to restart the services "services.sh restart." This will not affect the VMs on the host.
<config>
<snmpSettings>
<enable>false</enable>
<communities></communities>
<targets></targets>
</snmpSettings>
</config>
Example:
<config>
<snmpSettings>
<enable>true</enable>
<communities>SNMPString</communities>
<targets>x.x.x.x</targets>
</snmpSettings>
</config>
restart the services "services.sh restart."