public string get(string ip, string oid)
{
Pdu pdu = new Pdu(PduType.Get);
pdu.VbList.Add(oid);
OctetString community = new OctetString("public");
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver1;
{
IpAddress agent = new IpAddress(ip);
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
SnmpV1Packet result = (SnmpV1Packet)target.Request(pdu, param);
if (result != null)
{
if (result.Pdu.ErrorStatus != 0)
{
return string.Format("Error in SNMP reply. Error {0} index {1} \r\n",
result.Pdu.ErrorStatus,
result.Pdu.ErrorIndex);
}
else
{
return result.Pdu.VbList[0].Value.ToString();
}
}
else
{
return string.Format("No response received from SNMP agent. \r\n");
}
target.Dispose();
}
}
private void button11_Click(object sender, EventArgs e)
{
//SnmpTest snt = new SnmpTest(tbAddress.Text, "public", ".1.3.6.1.4.1.38446");
//string[] t= {".1.3.6.1.4.1.38446"};
//snt.Test();
OctetString community = new OctetString("public");
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver2;
IpAddress agent = new IpAddress("192.168.1.120");
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
Pdu pdu2 = new Pdu(PduType.GetBulk);
pdu2.VbList.Add(".1.3.6.1.4.1.38446.1.1.2.1.13");
SnmpV2Packet result2 = (SnmpV2Packet)target.Request(pdu2, param);
int i=result2.Pdu.VbCount;
string str= SnmpConstants.GetTypeName(result2.Pdu.VbList[0].Value.Type);
string str2 = result2.Pdu.VbList[0].Value.ToString();
return;
// Define Oid that is the root of the MIB
// tree you wish to retrieve
Oid rootOid = new Oid(".1.3.6.1.4.1.38446.1.5.9.1.9"); // ifDescr
// This Oid represents last Oid returned by
// the SNMP agent
Oid lastOid = (Oid)rootOid.Clone();
// Pdu class used for all requests
Pdu pdu = new Pdu(PduType.GetBulk);
// In this example, set NonRepeaters value to 0
pdu.NonRepeaters = 0;
// MaxRepetitions tells the agent how many Oid/Value pairs to return
// in the response.
pdu.MaxRepetitions = 5;
// Loop through results
while (lastOid != null)
{
// When Pdu class is first constructed, RequestId is set to 0
// and during encoding id will be set to the random value
// for subsequent requests, id will be set to a value that
// needs to be incremented to have unique request ids for each
// packet
if (pdu.RequestId != 0)
{
pdu.RequestId += 1;
}
// Clear Oids from the Pdu class.
pdu.VbList.Clear();
// Initialize request PDU with the last retrieved Oid
pdu.VbList.Add(lastOid);
// Make SNMP request
SnmpV2Packet result = (SnmpV2Packet)target.Request(pdu, param);
// You should catch exceptions in the Request if using in real application.
// 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);
lastOid = null;
break;
}
else
{
// Walk through returned variable bindings
foreach (Vb v in result.Pdu.VbList)
{
// Check that retrieved Oid is "child" of the root OID
if (rootOid.IsRootOf(v.Oid))
{
Console.WriteLine("{0} ({1}): {2}",
v.Oid.ToString(),
SnmpConstants.GetTypeName(v.Value.Type),
v.Value.ToString());
lastOid = v.Oid;
}
else
{
// we have reached the end of the requested
// MIB tree. Set lastOid to null and exit loop
lastOid = null;
}
}
}
}
else
{
Console.WriteLine("No response received from SNMP agent.");
}
}
target.Dispose();
}
/// <summary>
/// WALk方法
/// </summary>
/// <param name="Ip_OID">ip-oid</param>
/// <param name="outinfo">输出到那个字典</param>
public void SnmpWalk(Dictionary<string, List<string>> Ip_OID, Dictionary<string, Dictionary<string, string>> outinfo)
{
foreach (string address in Ip_OID.Keys)
{
Dictionary<string, string> Info = new Dictionary<string, string>();
try
{
{
Pdu pdu = new Pdu(PduType.Get);
foreach (string a in Ip_OID[address])
{
pdu.VbList.Add(a);
}
OctetString community = new OctetString("public");
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver2;
IpAddress agent = new IpAddress(address);
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
SnmpV2Packet result = (SnmpV2Packet)target.Request(pdu, param);
if (result != null)
{
if (result.Pdu.ErrorStatus != 0)
{
Console.WriteLine("Error in SNMP reply. Error {0} index {1} \r\n",
result.Pdu.ErrorStatus,
result.Pdu.ErrorIndex);
}
else
{
for (int i = 0; i < pdu.VbCount; i++)
{
Info.Add(result.Pdu.VbList[i].Oid.ToString(), result.Pdu.VbList[i].Value.ToString());
}
if (outinfo.ContainsKey(address) == false)
{
outinfo.Add(address, Info);
}
else
{
outinfo[address] = Info;
}
}
}
else
{
Console.WriteLine("No response received from SNMP agent. \r\n");
msg.SaveTempMessage("", DateTime.Now.ToString(), "No response received from SNMP agent. \r\n");
}
target.Dispose();
}
}
catch (Exception ex)
{
msg.SaveTempMessage(ex.Source.ToString(), ex.Message.ToString(), DateTime.Now.ToString());
}
}
}
