Visual C# 2015調用SnmpSharpNet庫實現簡單的SNMP元素查詢

標籤：pad   desktop   .net   png   ace   community   tag   parameter   調用   

一開始調研發現有幾個SNMP的庫，

一個是net-SNMP，這個好像是linux用的多

一個是微軟自己的WinSNMP，這個沒有例子，不太好操作

一個是SnmpSharpNet，這個有些例子比較好，

利用SnmpSharpNet的例子實現讀取udpindatagrams的代碼如下：

要將SnmpSharpNet.dll放入Visual C# 2015的工程目錄下，然後，在工程瀏覽器的引用裡添加這個dll，方法見這裡，引用，右鍵，添加引用，瀏覽到dll即可

 1 using System; 2 using System.Net; 3 using SnmpSharpNet; 4  5 namespace snmpget 6 { 7     class Program 8     { 9         static void Main(string[] args)10         {11             // SNMP community name12             OctetString community = new OctetString("public");13 14             // Define agent parameters class15             AgentParameters param = new AgentParameters(community);16             // Set SNMP version to 1 (or 2)17             param.Version = SnmpVersion.Ver1;18             // Construct the agent address object19             // IpAddress class is easy to use here because20             //  it will try to resolve constructor parameter if it doesn‘t21             //  parse to an IP address22             IpAddress agent = new IpAddress("192.168.0.10");23 24             // Construct target25             UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);26 27             // Pdu class used for all requests28             Pdu pdu = new Pdu(PduType.Get);29             pdu.VbList.Add("1.3.6.1.2.1.7.1.0"); //udpindatagrams30 31             // Make SNMP request32             SnmpV1Packet result = (SnmpV1Packet)target.Request(pdu, param);33 34             // If result is null then agent didn‘t reply or we couldn‘t parse the reply.35             if (result != null)36             {37                 // ErrorStatus other then 0 is an error returned by 38                 // the Agent - see SnmpConstants for error definitions39                 if (result.Pdu.ErrorStatus != 0)40                 {41                     // agent reported an error with the request42                     Console.WriteLine("Error in SNMP reply. Error {0} index {1}",43                         result.Pdu.ErrorStatus,44                         result.Pdu.ErrorIndex);45                 }46                 else47                 {48                     // Reply variables are returned in the same order as they were added49                     //  to the VbList50                     Console.WriteLine("sysDescr({0}) ({1}): {2}",51                         result.Pdu.VbList[0].Oid.ToString(),52                         SnmpConstants.GetTypeName(result.Pdu.VbList[0].Value.Type),53                         result.Pdu.VbList[0].Value.ToString());54                 }55             }56             else57             {58                 Console.WriteLine("No response received from SNMP agent.");59             }60             target.Close();61         }62     }63 }

 輸出結果如下：

發送和接收的包的wireshark：

get-request

get-response

 

接下來，需要看如何擷取網路拓撲。。。

Visual C# 2015調用SnmpSharpNet庫實現簡單的SNMP元素查詢