joyent/node-snmpjs

var os = require('os');
var snmp = require('snmpjs');

var agent = snmp.createAgent();

agent.request({ oid: '.1.3.6.1.2.1.1.5', handler: function (prq) {
	var nodename = os.hostname();
	var val = snmp.data.createData({ type: 'OctetString',
	    value: nodename });

	snmp.provider.readOnlyScalar(prq, val);
} });

agent.bind({ family: 'udp4', port: 161 });

$ snmpget -v 2c -c any localhost .1.3.6.1.2.1.1.5.0

$ npm install snmpjs