当我需要使用snmp请求时最大尝试

Question

我需要向NCP董事会发送请求并提供信息表。 NCP IP : 192.168.1.105但是当我用C＃发送请求时它会显示我的错误：

SnmpSharpNet.SnmpException：'请求已达到最大重试次数。'

它用Ethernet连接到我的电脑。

当我使用这个IP127.0.0.1它没有显示我的错误。

我用这个代码：

foreach (NetworkInterface tempNetworkInterface in niArr)

        {
            OctetString community = new OctetString("public");
            AgentParameters param = new AgentParameters(community);
            param.Version = SnmpVersion.Ver1;
            IpAddress agent = new IpAddress("192.168.1.105");
            UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);

            // Pdu class used for all requests
            Pdu pdu = new Pdu(PduType.Get);
            pdu.VbList.Add("1.3.6.1.2.1.1.1.0"); //sysDescr
            pdu.VbList.Add("1.3.6.1.2.1.1.2.0"); //sysObjectID
            pdu.VbList.Add("1.3.6.1.2.1.1.3.0"); //sysUpTime
            pdu.VbList.Add("1.3.6.1.2.1.1.4.0"); //sysContact
            pdu.VbList.Add("1.3.6.1.2.1.1.5.0"); //sysName

            // Make SNMP request
            SnmpV1Packet result = (SnmpV1Packet)target.Request(pdu, param);

            // If result is null then agent didn't reply or we couldn't parse the reply.
            if (result != null)
            {
                // ErrorStatus other then 0 is an error returned by 
                // the Agent - see SnmpConstants for error definitions
                if (result.Pdu.ErrorStatus != 0)
                {
                    // agent reported an error with the request
                    Console.WriteLine("Error in SNMP reply. Error {0} index {1}",
                        result.Pdu.ErrorStatus,
                        result.Pdu.ErrorIndex);
                }
                else
                {
                    // Reply variables are returned in the same order as they were added
                    //  to the VbList
                    Console.WriteLine("sysDescr({0}) ({1}): {2}",
                        result.Pdu.VbList[0].Oid.ToString(),
                        SnmpConstants.GetTypeName(result.Pdu.VbList[0].Value.Type),
                        result.Pdu.VbList[0].Value.ToString());
                    Console.WriteLine("sysObjectID({0}) ({1}): {2}",
                        result.Pdu.VbList[1].Oid.ToString(),
                        SnmpConstants.GetTypeName(result.Pdu.VbList[1].Value.Type),
                        result.Pdu.VbList[1].Value.ToString());
                    Console.WriteLine("sysUpTime({0}) ({1}): {2}",
                        result.Pdu.VbList[2].Oid.ToString(),
                        SnmpConstants.GetTypeName(result.Pdu.VbList[2].Value.Type),
                        result.Pdu.VbList[2].Value.ToString());
                    Console.WriteLine("sysContact({0}) ({1}): {2}",
                        result.Pdu.VbList[3].Oid.ToString(),
                        SnmpConstants.GetTypeName(result.Pdu.VbList[3].Value.Type),
                        result.Pdu.VbList[3].Value.ToString());
                    Console.WriteLine("sysName({0}) ({1}): {2}",
                        result.Pdu.VbList[4].Oid.ToString(),
                        SnmpConstants.GetTypeName(result.Pdu.VbList[4].Value.Type),
                        result.Pdu.VbList[4].Value.ToString());
                }
            }
            else
            {
                Console.WriteLine("No response received from SNMP agent.");
            }
            target.Close();

Answer 1

您的代码显示IP地址192.168.1.105

IpAddress agent = new IpAddress("192.168.1.105");

但是你说它适用于127.0.0.1，那么为什么不在代码中更改该行以使用127.0.0.1？