--Following commands are for vSphere CLI -- NOT Power CLI--
specify community string/name
vicfg-snmp.pl --server esxi-1 --username root --password 123456 -c CommunityName
specify target
vicfg-snmp.pl --server esxi-1 --username root --password 123456 -t 10.10.10.1@161/CommunityName
enable
vicfg-snmp.pl --server esxi-1 --username root --password 123456 --enable
test
vicfg-snmp.pl --server esxi-1 --username root --password 123456 --test
