Connect to UPS Via SNMP

[IC_Systems]

Hello 

I have a UPS support SNMP and I need to connect with SL.

Could you share an example?

[Erwin-vd-Zwart · Accepted solution]

This is officially not supported, however it can be done if you have the libnetsnmp and luasnmp packages installed

Run as resident at 0 sec:

os.sleep(1)

if not devices then

  require('snmp')

  devices = {

    {

      ip = '192.168.1.1',

      port = 161,

      mapping = {

        { oid = '1.3.6.1.4.1.14988.1.1.3.8.0', addr = '32/0/0' },

        { oid = '1.3.6.1.4.1.14988.1.1.3.10.0', addr = '32/0/1' },

      }

    },

    {

      ip = '192.168.1.2',

      mapping = {

        { oid = '1.3.6.1.4.1.14988.1.1.3.8.0', addr = '32/0/3' },

        { oid = '1.3.6.1.4.1.14988.1.1.3.10.0', addr = '32/0/4' },

      }

    },

   {

      ip = '192.168.1.3',

      mapping = {

        { oid = '1.3.6.1.4.1.14988.1.1.3.8.0', addr = '32/0/5' },

        { oid = '1.3.6.1.4.1.14988.1.1.3.10.0', addr = '32/0/6' },

      }

    },

   {

      ip = '192.168.1.4',

      mapping = {

        { oid = '1.3.6.1.4.1.14988.1.1.3.8.0', addr = '32/0/7' },

        { oid = '1.3.6.1.4.1.14988.1.1.3.10.0', addr = '32/0/8' },

      }

    },

  }

end

for _, dev in ipairs(devices) do

  local conn, err = snmp.open({

    version = snmp.SNMPv1,

    community = 'public',

    port = dev.port or 161,

    peer = dev.ip,

  })

  if conn then

    for _, map in ipairs(dev.mapping) do

      local res, err = conn:get(map.oid)

      if res and res.value ~= nil then

        grp.checkwrite(map.addr, res.value)

      else

        alert('SNMP read from %s %s failed (%s)', dev.ip, map.oid, tostring(err))

      end

    end

  else

    alert('SNMP connection to %s failed (%s)', dev.ip, tostring(err))

  end

end

[IC_Systems]

Thanks @Erwin-vd-Zwart 

Do you plan to support it officially?

If I want to change the version, I just should change it from here: 

version = snmp.SNMPv1,

[Erwin-vd-Zwart]

No we will not support it officially, the typical market for this kind of solutions is BMS, and the we have an official supported SmartConnector for SNMP traps, so that is our  preferred solution.