gosnmp

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// Copyright 2012 The GoSNMP Authors. All rights reserved.  Use of this
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// source code is governed by a BSD-style license that can be found in the
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// LICENSE file.
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package main
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import (
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	"fmt"
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	"log"
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	"os"
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	"time"
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	g "github.com/gosnmp/gosnmp"
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)
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const (
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	On  int = 1
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	Off     = 2
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)
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func main() {
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	var Client = &g.GoSNMP{
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		Target:    "192.168.91.20",
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		Port:      161,
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		Community: "private",
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		Version:   g.Version2c,
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		Timeout:   time.Duration(2) * time.Second,
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		Logger:    g.NewLogger(log.New(os.Stdout, "", 0)),
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	}
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	err := Client.Connect()
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	if err != nil {
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		log.Fatalf("Connect() err: %v", err)
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	}
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	defer Client.Conn.Close()
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	var mySnmpPDU = []g.SnmpPDU{{
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		Name:  "1.3.6.1.4.1.318.1.1.4.4.2.1.3.15",
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		Type:  g.Integer,
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		Value: On,
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	}}
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	setResult, setErr := Client.Set(mySnmpPDU)
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	if setErr != nil {
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		log.Fatalf("SNMP set() fialed due to err: %v", setErr)
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	}
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	for i, variable := range setResult.Variables {
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		fmt.Printf("%d: oid: %s ", i, variable.Name)
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		// the Value of each variable returned by Get() implements
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		// interface{}. You could do a type switch...
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		switch variable.Type {
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		case g.OctetString:
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			fmt.Printf("string: %s\n", string(variable.Value.([]byte)))
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		default:
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			// ... or often you're just interested in numeric values.
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			// ToBigInt() will return the Value as a BigInt, for plugging
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			// into your calculations.
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			fmt.Printf("number: %d\n", g.ToBigInt(variable.Value))
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		}
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	}
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}
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