nano /etc/telegraf/telegraf.d/mySwitch.local.conf
>>>>>
# my database for this plugin
[[outputs.influxdb]]
  database = "snmp"
  username = "myUser"
  password = "myPass"

[[inputs.snmp]]
  # device monitored by snmp
  agents = [ "mySwitch.local" ]
  # max 3 retries if timeout each time
  timeout = "5s"
  retries = 3
  version = 2
  # snmp community
  community = "MyCommunity"

  # key level 2 in InfluxDB (included in agent_host)
  name = "mySwitch.local"
  # measurement for each key level 2
  [[inputs.snmp.field]]
    name = "CPU1minute_percent"
    oid = ".1.3.6.1.4.1.11863.6.4.1.1.1.1.3"
  [[inputs.snmp.field]]
    name = "Memory_percent"
    oid = ".1.3.6.1.4.1.11863.6.4.1.2.1.1.2"
  [[inputs.snmp.table]]
    name = "interface"
    oid = " IF-MIB::ifXTable"