public string GetHersteller()
{
// SNMP community name
OctetString community = new OctetString("public");
// Define agent parameters class
AgentParameters param = new AgentParameters(community);
// Set SNMP version to 1 (or 2)
param.Version = SnmpVersion.Ver1;
// Construct the agent address object
// IpAddress class is easy to use here because
// it will try to resolve constructor parameter if it doesn't
// parse to an IP address
IpAddress agent = new IpAddress(Ip);
// Construct target
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 250, 1);
// Pdu class used for all requests
Pdu pdu = new Pdu(PduType.Get);
pdu.VbList.Add(".1.3.6.1.2.1.25.3.2.1.3.1"); //sysDescr
// Make SNMP request
try
{
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
return("Error in SNMP reply.");
}
else
{
// Reply variables are returned in the same order as they were added
// to the VbList
target.Close();
return(result.Pdu.VbList[0].Value.ToString());
}
}
else
{
target.Close();
return("No response received from SNMP agent.");
}
}
catch { target.Close(); return("Fehler"); }
}
public static bool SendSNMPRequest(Pdu pdu, IPAddress ip, out SnmpPacket packet, SnmpVersion version = SnmpVersion.Ver2, string community = "public", int port = 161, int timeout = 1000, int retry = 1)
{
// Define agent parameters class
AgentParameters agentParams = new AgentParameters(new OctetString(community))
{
Version = version,
};
packet = null;
try
{
UdpTarget target = new UdpTarget(ip, port, timeout, retry);
SnmpPacket res;
// Keep looping through results until end of table
try
{
res = target.Request(pdu, agentParams);
}
catch (Exception ex)
{
LoggingHelper.LogEntry(SystemCategories.GeneralError, $"{ex.Message} {ex.StackTrace}");
target.Close();
return(false);
}
#region Validate request
if (res.Version != version)
{
LoggingHelper.LogEntry(SystemCategories.GeneralError, "Received wrong SNMP version response packet.");
target.Close();
return(false);
}
if (res.Pdu.ErrorStatus != 0)
{
LoggingHelper.LogEntry(SystemCategories.GeneralError, $"SNMP agent returned error {res.Pdu.ErrorStatus} for request Vb index {res.Pdu.ErrorIndex}");
target.Close();
return(false);
}
#endregion
target.Close();
packet = res;
return(true);
}
catch (Exception ex)
{
LoggingHelper.LogEntry(SystemCategories.GeneralError, $"{ex.Message} {ex.StackTrace}");
}
return(false);
}
/// <summary>
/// 根据提供信息获取一个或多个snmp值，返回VbCollection，若出错则返回null
/// </summary>
/// <param name="ip">目标地址</param>
/// <param name="requestOids">目标oid数组</param>
/// <param name="errorMessage">输出错误信息</param>
/// <param name="community">共同体字符串，默认public</param>
/// <param name="port">端口，默认161</param>
/// <param name="timeout">超时，默认2000ms</param>
/// <param name="retry">重试次数，默认1次</param>
/// <returns>返回VbCollection，若出错则返回null</returns>
public static VbCollection GetResultsFromOids(IpAddress ip, string[] requestOids, out string errorMessage)
{
int n = requestOids.Length;
AgentParameters param = new AgentParameters(SnmpVersion.Ver2, new OctetString(App.snmpCommunity));
param.DisableReplySourceCheck = !App.snmpCheckSrcFlag;
UdpTarget target = new UdpTarget((IPAddress)ip, App.snmpPort, App.snmpTimeout, App.snmpRetry);
Pdu pdu = new Pdu(PduType.Get);
for (int i = 0; i < requestOids.Length; i++)
{
pdu.VbList.Add(requestOids[i]);
}
SnmpV2Packet result = null;
try
{
result = (SnmpV2Packet)target.Request(pdu, param);
}
catch (Exception ex)
{
errorMessage = "获取SNMP应答出现错误\n" + ex.Message;
target.Close();
return(null);
}
VbCollection vbs;
if (result != null)
{
if (result.Pdu.ErrorStatus != 0)
{
errorMessage = string.Format("SNMP应答数据包中有错误信息. Error {0} index {1}", result.Pdu.ErrorStatus, result.Pdu.ErrorIndex);
target.Close();
return(null);
}
else
{
vbs = result.Pdu.VbList;
}
}
else
{
errorMessage = "没有SNMP应答数据包";
target.Close();
return(null);
}
errorMessage = "";
target.Close();
return(vbs);
}
private void sendSetCommand(string OID, string parameters)
{
//tmrRequest.Enabled = false;
UdpTarget target = new UdpTarget((IPAddress) new IpAddress(txtCurrentIP.Text));
Pdu pdu = new Pdu(PduType.Set);
pdu.VbList.Add(new Oid(OID), new OctetString(parameters));
AgentParameters aparam = new AgentParameters(SnmpVersion.Ver2, new OctetString("private"));
// Response packet
SnmpV2Packet response;
try
{
// Send request and wait for response
response = target.Request(pdu, aparam) as SnmpV2Packet;
}
catch (Exception ex)
{
WriteMessage(ex.ToString());
target.Close();
return;
}
//tmrRequest.Enabled = true;
}
/// <summary>
/// 带有异步回调的GetResponse;
/// </summary>
/// <param name="callback"></param>
/// <param name="PduList"></param>
/// <param name="Community"></param>
/// <param name="IpAddr"></param>
public override void GetRequest(AsyncCallback callback, List <string> PduList, string Community, string IpAddr)
{
// 当确认全部获取SNMP数据后，调用callback回调;
SnmpHelperResult res = new SnmpHelperResult();
OctetString community = new OctetString(Community);
AgentParameters param = new AgentParameters(community);
Dictionary <string, string> rest = new Dictionary <string, string>();
param.Version = SnmpVersion.Ver2;
// 创建代理(基站);
UdpTarget target = ConnectToAgent(Community, IpAddr);
// Pdu请求形式Get;
Pdu pdu = new Pdu(PduType.Get);
foreach (string pdulist in PduList)
{
pdu.VbList.Add(pdulist);
}
Task tsk = Task.Factory.StartNew(() => {
// 接收结果;
m_Result = (SnmpV2Packet)target.Request(pdu, param);
if (m_Result != null)
{
// ErrorStatus other then 0 is an error returned by
// the Agent - see SnmpConstants for error definitions
if (m_Result.Pdu.ErrorStatus != 0)
{
// agent reported an error with the request
Console.WriteLine("Error in SNMP reply. Error {0} index {1}",
m_Result.Pdu.ErrorStatus,
m_Result.Pdu.ErrorIndex);
rest.Add(m_Result.Pdu.ErrorIndex.ToString(), m_Result.Pdu.ErrorStatus.ToString());
res.SetSNMPReslut(rest);
Thread.Sleep(3111);
callback(res);
}
else
{
for (int i = 0; i < m_Result.Pdu.VbCount; i++)
{
rest.Add(m_Result.Pdu.VbList[i].Oid.ToString(), m_Result.Pdu.VbList[i].Value.ToString());
res.SetSNMPReslut(rest);
Thread.Sleep(3111);
callback(res);
}
}
}
else
{
Console.WriteLine("No response received from SNMP agent.");
}
target.Close();
});
}
public override void Execute(IPAddress _targetAddress)
{
UdpTarget _target = new UdpTarget(_targetAddress, 161, 5000, 3);
switch (version)
{
case 1:
outp.outState = JobOutput.OutState.Failed;
Logging.Logger.Log("No Support for Version 1", Logging.Logger.MessageType.ERROR);
break;
case 2:
ExecuteRequest(_target, NetworkHelper.GetSNMPV2Param(NetworkHelper.SNMP_COMMUNITY_STRING));
break;
case 3:
if (NetworkHelper.GetSNMPV3Param(_target, NetworkHelper.SNMP_COMMUNITY_STRING, secModel) != null)
{
ExecuteRequest(_target, NetworkHelper.GetSNMPV3Param(_target, NetworkHelper.SNMP_COMMUNITY_STRING, secModel));
}
else
{
Logging.Logger.Log("Wasn't possible to execute snmp Request because of parameter fails", Logging.Logger.MessageType.ERROR);
}
break;
}
_target.Close();
}
private void GetMore(int n)
{
OctetString community = new OctetString(txtConStr.Text);
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver1;
try
{
IpAddress agent = new IpAddress(txtIPAgent.Text);
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
Pdu pdu = new Pdu(PduType.Get);
string[] row;
for (int i = 1; i <= n; i++)
{
pdu.VbList.Add("1.3.6.1.2.1.2.2.1.2." + i.ToString());
pdu.VbList.Add("1.3.6.1.2.1.2.2.1.3." + i.ToString());
pdu.VbList.Add("1.3.6.1.2.1.2.2.1.5." + i.ToString());
pdu.VbList.Add("1.3.6.1.2.1.2.2.1.10." + i.ToString());
pdu.VbList.Add("1.3.6.1.2.1.2.2.1.16." + i.ToString());
SnmpV1Packet result = (SnmpV1Packet)target.Request(pdu, param);
row = new string[] { i.ToString(), result.Pdu.VbList[0].Value.ToString(), GetType(int.Parse(result.Pdu.VbList[1].Value.ToString())), result.Pdu.VbList[2].Value.ToString(), result.Pdu.VbList[3].Value.ToString(), result.Pdu.VbList[4].Value.ToString() };
dgvList.Rows.Add(row);
pdu.Reset();
}
target.Close();
}
catch (Exception ex)
{
rtbGuiGet.Text = "Đã xảy ra lỗi: " + ex.Message.ToString();
}
}
/// <summary>
/// Gets the specific values of an OID
/// </summary>
/// <param name="ip">The ip.</param>
/// <param name="oid">The oid.</param>
/// <returns></returns>
public static string GetOidValue(string ip, string oid)
{
var oidValue = "";
try
{
if (oid.Length > 0)
{
var community = new OctetString("public");
var param = new AgentParameters(community)
{
Version = SnmpVersion.Ver1
};
var agent = new IpAddress(ip);
var target = new UdpTarget((IPAddress)agent, 161, 5000, 1);
var pdu = new Pdu(PduType.Get);
pdu.VbList.Add(oid);
var result = (SnmpV1Packet)target.Request(pdu, param);
if (result?.Pdu.ErrorStatus == 0)
{
oidValue = result.Pdu.VbList[0].Value.ToString();
}
target.Close();
}
}
catch (Exception)
{
// ignored
}
return(oidValue);
}
private void btnSNMPSend_Click(object sender, EventArgs e)
{
try
{
OctetString community = new OctetString("public");
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver2;
IpAddress agent = new IpAddress(txtCurrentIP.Text);
UdpTarget target = new UdpTarget((System.Net.IPAddress)agent, 161, 2000, 1);
// Pdu class used for all requests
Pdu pdu = new Pdu(PduType.Get);
foreach (DataGridViewRow dr in dgvInstructions.SelectedRows)
{
pdu.VbList.Add(dr.Cells["InstructionBytes"].Value.ToString());
}
// Make SNMP request
SnmpV2Packet result = (SnmpV2Packet)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
txtReceivedBytesASCII.Text = String.Format("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
for (int i = 0; i < result.Pdu.VbList.Count; i++)
{
txtReceivedBytesASCII.Text += result.Pdu.VbList[i].Oid.ToString() + ", " + SnmpConstants.GetTypeName(result.Pdu.VbList[i].Value.Type) + ", " +
result.Pdu.VbList[i].Value.ToString() + ", " + dgvInstructions.SelectedRows[i].Cells["Explanation"].Value.ToString() + Environment.NewLine;
}
}
}
else
{
//txtConsole.Text = String.Format("No response received from SNMP agent.");
}
target.Close();
}
catch (Exception exp)
{
txtReceivedBytesASCII.Text = exp.ToString();
}
}
/// <summary>
/// GetRequest
/// </summary>
/// <param name="PduList">需要查询的Pdu列表</param>
/// <param name="Community">需要设置的Community</param>
/// <param name="IpAddr">需要设置的IP地址</param>
/// <returns>返回一个字典,键值为OID,值为MIB值;</returns>
public override Dictionary <string, string> GetRequest(List <string> PduList, string Community, string IpAddr)
{
Dictionary <string, string> rest = new Dictionary <string, string>();
OctetString community = new OctetString(Community);
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver2;
// 创建代理(基站);
UdpTarget target = ConnectToAgent(Community, IpAddr);
// 填写Pdu请求;
Pdu pdu = new Pdu(PduType.Get);
foreach (string pdulist in PduList)
{
pdu.VbList.Add(pdulist);
}
// 接收结果;
m_Result = (SnmpV2Packet)target.Request(pdu, param);
// 如果结果为空,则认为Agent没有回响应;
if (m_Result != null)
{
// ErrorStatus other then 0 is an error returned by
// the Agent - see SnmpConstants for error definitions
if (m_Result.Pdu.ErrorStatus != 0)
{
// agent reported an error with the request
Console.WriteLine("Error in SNMP reply. Error {0} index {1}",
m_Result.Pdu.ErrorStatus,
m_Result.Pdu.ErrorIndex);
rest.Add(m_Result.Pdu.ErrorIndex.ToString(), m_Result.Pdu.ErrorStatus.ToString());
}
else
{
for (int i = 0; i < m_Result.Pdu.VbCount; i++)
{
rest.Add(m_Result.Pdu.VbList[i].Oid.ToString(), m_Result.Pdu.VbList[i].Value.ToString());
}
}
}
else
{
Console.WriteLine("No response received from SNMP agent.");
}
target.Close();
return(rest);
}
/// <summary>
/// Отправляет SNMP запрос на IP адрес, возвращает ответ.
/// </summary>
/// <param name="ipAddress">IP адрес</param>
/// <returns>Ответ</returns>
private SnmpV1Packet SendRequest(string ipAddress)
{
// Параметры запроса.
SnmpV1Packet result;
var community = new OctetString("public");
var param = new AgentParameters(community)
{
Version = SnmpVersion.Ver1
};
var agent = new IpAddress(ipAddress);
var target = new UdpTarget((IPAddress)agent, 161, 450, 1);
var pdu = new Pdu(PduType.Get);
// Oid сетевого имени устройства.
pdu.VbList.Add("1.3.6.1.2.1.1.5.0");
// Oid модели.
pdu.VbList.Add("1.3.6.1.2.1.25.3.2.1.3.1");
// Oid серийного номера.
pdu.VbList.Add("1.3.6.1.2.1.43.5.1.1.17.1");
// Отправка запроса.
result = (SnmpV1Packet)target.Request(pdu, param);
// Ошибок нет.
if (result.Pdu.ErrorStatus == 0)
{
// Если сетевое имя пустое.
if (string.IsNullOrWhiteSpace(result.Pdu.VbList[0].Value.ToString()))
{
var kyoceraPdu = new Pdu(PduType.Get);
// Oid сетевого имени устройства.
kyoceraPdu.VbList.Add("1.3.6.1.4.1.1347.40.10.1.1.5.1");
// Oid модели.
kyoceraPdu.VbList.Add("1.3.6.1.2.1.25.3.2.1.3.1");
// Oid серийного номера.
kyoceraPdu.VbList.Add("1.3.6.1.2.1.43.5.1.1.17.1");
result = (SnmpV1Packet)target.Request(kyoceraPdu, param);
}
}
// При ошибке запросить с параметрами для зебры.
else
{
var zebraPdu = new Pdu(PduType.Get);
// Oid сетевого имени устройства.
zebraPdu.VbList.Add("1.3.6.1.2.1.1.5.0");
// Oid модели.
zebraPdu.VbList.Add("1.3.6.1.2.1.25.3.2.1.3.1");
// Oid серийного номера.
zebraPdu.VbList.Add("1.3.6.1.4.1.10642.1.9.0");
result = (SnmpV1Packet)target.Request(zebraPdu, param);
}
target.Close();
return(result);
}
/// <summary>
/// SetRequest的SnmpV2c版本
/// </summary>
/// <param name="PduList">需要查询的Pdu列表</param>
/// <param name="Community">需要设置的Community</param>
/// <param name="IpAddress">需要设置的IP地址</param>
public override void SetRequest(Dictionary <string, string> PduList, string Community, string IpAddress)
{
// Prepare target
UdpTarget target = new UdpTarget((IPAddress) new IpAddress(IpAddress));
// Create a SET PDU
Pdu pdu = new Pdu(PduType.Set);
foreach (var list in PduList)
{
pdu.VbList.Add(new Oid(list.Key), new OctetString(list.Value));
}
// Set Agent security parameters
AgentParameters aparam = new AgentParameters(SnmpVersion.Ver2, new OctetString(Community));
// Response packet
SnmpV2Packet response;
try
{
// Send request and wait for response
response = target.Request(pdu, aparam) as SnmpV2Packet;
}
catch (Exception ex)
{
// If exception happens, it will be returned here
Console.WriteLine(String.Format("Request failed with exception: {0}", ex.Message));
target.Close();
return;
}
// Make sure we received a response
if (response == null)
{
Console.WriteLine("Error in sending SNMP request.");
}
else
{
// Check if we received an SNMP error from the agent
if (response.Pdu.ErrorStatus != 0)
{
Console.WriteLine(String.Format("SNMP agent returned ErrorStatus {0} on index {1}",
response.Pdu.ErrorStatus, response.Pdu.ErrorIndex));
}
else
{
// Everything is ok. Agent will return the new value for the OID we changed
Console.WriteLine(String.Format("Agent response {0}: {1}",
response.Pdu[0].Oid.ToString(), response.Pdu[0].Value.ToString()));
}
}
}
public SNMPResultSet Get(string pOID)
{
SNMPResultSet snmpResult = null;
// Define agent parameters class
AgentParameters param = new AgentParameters(new OctetString(CommunityName));
// Set SNMP version to 1 (or 2)
param.Version = SnmpVersion.Ver1;
// Construct target
UdpTarget target = new UdpTarget((IPAddress)AgentIP, 161, 2000, 1);
// Pdu class used for all requests
Pdu pdu = new Pdu(PduType.Get);
pdu.VbList.Add(pOID);
// 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
snmpResult = new SNMPResultSet(result.Pdu.VbList[0].Oid.ToString(), SnmpConstants.GetTypeName(result.Pdu.VbList[0].Value.Type), result.Pdu.VbList[0].Value.ToString());
}
}
else
{
Console.WriteLine("No response received from SNMP agent.");
}
target.Close();
return(snmpResult);
}
public string GetSend(string getOid, string Version, string communityRead, string IP, int Port)
{
OctetString community = new OctetString(communityRead);
AgentParameters param = new AgentParameters(community);
if (Version == "V1")
{
param.Version = SnmpVersion.Ver1;
}
if (Version == "V2")
{
param.Version = SnmpVersion.Ver2;
}
IpAddress agent = new IpAddress(IP);
UdpTarget target = new UdpTarget((IPAddress)agent, Port, 2000, 1);
Pdu pdu = new Pdu(PduType.Get);
try
{
if (pdu.RequestId != 0)
{
pdu.RequestId += 1;
}
pdu.VbList.Clear();
pdu.VbList.Add(getOid);
if (Version == "V1")
{
result = (SnmpV1Packet)target.Request(pdu, param);
}
if (Version == "V2")
{
result = (SnmpV2Packet)target.Request(pdu, param);
}
}
catch (Exception e) { }
target.Close();
using (IDbConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["DeviceConnection"].ConnectionString))
{
connection.Query <WalkTowerDevice>($"update WalkTowerDevice set Type='{result.Pdu.VbList[0].Value.ToString()}' where WalkOID='{getOid}' and IP='{IP}'");
}
return(result.Pdu.VbList[0].Value.ToString());
}
private void Get(int n)
{
OctetString community = new OctetString(txtConStr.Text);
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver1;
try
{
IpAddress agent = new IpAddress(txtIPAgent.Text);
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
Pdu pdu = new Pdu(PduType.Get);
pdu.VbList.Add("1.3.6.1.2.1.1.1." + n.ToString()); //sysDescr
pdu.VbList.Add("1.3.6.1.2.1.1.2." + n.ToString()); //sysObjectID
pdu.VbList.Add("1.3.6.1.2.1.1.3." + n.ToString()); //sysUpTime
pdu.VbList.Add("1.3.6.1.2.1.1.4." + n.ToString()); //sysContact
pdu.VbList.Add("1.3.6.1.2.1.1.5." + n.ToString()); //sysName
pdu.VbList.Add("1.3.6.1.2.1.2.1." + n.ToString()); //ifNumbber
SnmpV1Packet result = (SnmpV1Packet)target.Request(pdu, param);
if (result != null)
{
if (result.Pdu.ErrorStatus != 0)
{
rtbGuiGet.Text = "Error in SNMP reply. Error " + result.Pdu.ErrorStatus + " index " + result.Pdu.ErrorIndex;
}
else
{
rtbGuiGet.Text = "sysDescr(" + result.Pdu.VbList[0].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[0].Value.Type) + "): " + result.Pdu.VbList[0].Value.ToString();
rtbGuiGet.Text = rtbGuiGet.Text + "\n" + "sysObjectID(" + result.Pdu.VbList[1].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[1].Value.Type) + "): " + result.Pdu.VbList[1].Value.ToString();
rtbGuiGet.Text = rtbGuiGet.Text + "\n" + "sysUpTime(" + result.Pdu.VbList[2].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[2].Value.Type) + "): " + result.Pdu.VbList[2].Value.ToString();
rtbGuiGet.Text = rtbGuiGet.Text + "\n" + "sysContact(" + result.Pdu.VbList[3].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[3].Value.Type) + "): " + result.Pdu.VbList[3].Value.ToString();
rtbGuiGet.Text = rtbGuiGet.Text + "\n" + "sysName(" + result.Pdu.VbList[4].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[4].Value.Type) + "): " + result.Pdu.VbList[4].Value.ToString();
rtbGuiGet.Text = rtbGuiGet.Text + "\n" + "ifNumber(" + result.Pdu.VbList[5].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[5].Value.Type) + "): " + result.Pdu.VbList[5].Value.ToString();
GetMore(int.Parse(result.Pdu.VbList[5].Value.ToString()));
}
}
else
{
rtbGuiGet.Text = "No response received from SNMP agent.";
}
target.Close();
}
catch (Exception ex)
{
rtbGuiGet.Text = "Đã xảy ra lỗi: " + ex.Message.ToString();
}
}
/// <summary>
/// Perform an SNMP Set.
/// </summary>
/// <param name="destination">The destination host.</param>
/// <param name="oid">The OID to set.</param>
/// <param name="value">The value to set.</param>
/// <returns>Nothing.</returns>
public static async Task SnmpSetAsync(IPAddress destination, string community, Oid oid, AsnType value)
{
UdpTarget target = new UdpTarget(destination);
// Create a SET PDU
Pdu pdu = new Pdu(EPduType.Set);
pdu.VbList.Add(oid, value);
// Set Agent security parameters
AgentParameters aparam = new AgentParameters(ESnmpVersion.Ver2, new OctetString(community));
// Response packet
SnmpV2Packet response;
try
{
// Send request and wait for response
response = await target.RequestAsync(pdu, aparam) as SnmpV2Packet;
}
catch (Exception ex)
{
// If exception happens, it will be returned here
Console.WriteLine(string.Format("Request failed with exception: {0}", ex.Message));
target.Close();
return;
}
// Make sure we received a response
if (response == null)
{
Console.WriteLine("Error in sending SNMP request.");
}
else
{
// Check if we received an SNMP error from the agent
if (response.Pdu.ErrorStatus != 0)
{
Console.WriteLine(string.Format("SNMP agent returned ErrorStatus {0} on index {1}", response.Pdu.ErrorStatus, response.Pdu.ErrorIndex));
}
else
{
// Everything is ok. Agent will return the new value for the OID we changed
Console.WriteLine(string.Format("Agent response {0}: {1}", response.Pdu[0].Oid.ToString(), response.Pdu[0].Value.ToString()));
}
}
}
public string SNMP_SET(string adres, string value)
{
// Prepare target
UdpTarget target = new UdpTarget((IPAddress) new IpAddress("127.0.0.1"));
// Create a SET PDU
Pdu pdu = new Pdu(PduType.Set);
// Set a value to integer
pdu.VbList.Add(new Oid(adres), new SnmpSharpNet.Integer32(int.Parse(value)));
// Set Agent security parameters
AgentParameters aparam = new AgentParameters(SnmpVersion.Ver2, new SnmpSharpNet.OctetString("public"));
// Response packet
SnmpV2Packet response;
try
{
// Send request and wait for response
response = target.Request(pdu, aparam) as SnmpV2Packet;
}
catch (Exception ex)
{
// If exception happens, it will be returned here
target.Close();
return(String.Format("Request failed with exception: {0}", ex.Message));
}
// Make sure we received a response
if (response == null)
{
return("Error in sending SNMP request.");
}
else
{
// Check if we received an SNMP error from the agent
if (response.Pdu.ErrorStatus != 0)
{
return(String.Format("SNMP agent returned ErrorStatus {0} on index {1}",
response.Pdu.ErrorStatus, response.Pdu.ErrorIndex));
}
else
{
// Everything is ok. Agent will return the new value for the OID we changed
return(String.Format("Agent response {0}: {1}",
response.Pdu[0].Oid.ToString(), response.Pdu[0].Value.ToString()));
}
}
}
private bool CheckMonitor(string IP, Monitor Monitor)
{
try
{
var community = new OctetString("public");
var param = new AgentParameters(community)
{
Version = SnmpVersion.Ver1
};
var agent = new IpAddress(IP);
using (var target = new UdpTarget((IPAddress)agent, 161, 2000, 1))
{
var pdu = new Pdu(PduType.Get);
pdu.VbList.Add(Monitor.Oid);
var result = (SnmpV1Packet)target.Request(pdu, param);
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
{
return(true);
}
}
else
{
Console.WriteLine("No response received from SNMP agent.");
}
target.Close();
return(false);
}
}
catch (Exception e) { Console.WriteLine(e); return(false); }
}
public IActionResult Start([FromBody] Setting setting)
{
OctetString community = new OctetString(setting.Community);
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver2;
IpAddress agent = new IpAddress(setting.AgentAddress);
UdpTarget target = new UdpTarget((System.Net.IPAddress)agent, 161, 2000, 1);
Pdu pdu = new Pdu(PduType.Get);
pdu.VbList.Add("1.3.6.1.2.1.1.5.0"); //sysName
SnmpV2Packet result = (SnmpV2Packet)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
return(Json(("Error in SNMP reply. Error {0} index {1}",
result.Pdu.ErrorStatus,
result.Pdu.ErrorIndex)));
}
else
{
return(Json(("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
{
return(Json("No response received from SNMP agent."));
}
target.Close();
return(Json(setting));
}
public void CheckOIDs()
{
IsOnline();
if (Online)
{
OctetString community = new OctetString("public");
AgentParameters param = new AgentParameters(community);
IpAddress agent = new IpAddress(IP);
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
Pdu pdu = new Pdu(PduType.Get);
foreach (var oid in DeviceProps)
{
pdu.VbList.Add(oid.PropOID);
}
SnmpPacket result = target.Request(pdu, param);
if (result != null)
{
if (result.Pdu.ErrorStatus != 0)
{
throw new ArgumentException("Error in SNMP reply. Error {0} " +
result.Pdu.ErrorStatus + "index" +
result.Pdu.ErrorIndex);
}
else
{
for (int i = 0; i < DeviceProps.Count; i++)
{
try
{
DeviceProps[i].PropValue = result.Pdu.VbList[i].Value.ToString();
}
catch (Exception)
{
continue;
}
}
}
}
else
{
throw new Exception("No response received from SNMP agent.");
}
target.Close();
}
}
private bool DiscoverAgents(IPAddress cameraAddress)
{
bool result = false;
System.Net.NetworkInformation.Ping ping = new System.Net.NetworkInformation.Ping();
var test = ping.Send(cameraAddress);
UdpTarget target = new UdpTarget(cameraAddress, 161, 5000, 3);
SecureAgentParameters param = new SecureAgentParameters();
if (!target.Discovery(param))
{
Console.WriteLine("Discovery failed. Unable to continue...");
target.Close();
}
else
{
param.SecurityName.Set("mySecureName");
param.Authentication = AuthenticationDigests.MD5;
param.AuthenticationSecret.Set("alstom1!");
param.Privacy = PrivacyProtocols.None;
param.Reportable = false;
SnmpV3Packet testResult;
try
{
testResult = (SnmpV3Packet)target.Request(this.CreatePDU(PduType.Get), param);
result = true;
}
catch (Exception ex)
{
Console.WriteLine(ex);
testResult = null;
result = false;
}
}
return(result);
//param.SecurityName.Set("mySecureName");
}
public string GetSend(string getOid, string Version, string communityRead, string IP, int Port)
{
OctetString community = new OctetString(communityRead);
AgentParameters param = new AgentParameters(community);
if (Version == "V1")
{
param.Version = SnmpVersion.Ver1;
}
if (Version == "V2")
{
param.Version = SnmpVersion.Ver2;
}
IpAddress agent = new IpAddress(IP);
UdpTarget target = new UdpTarget((IPAddress)agent, Port, 2000, 1);
Pdu pdu = new Pdu(PduType.Get);
try
{
if (pdu.RequestId != 0)
{
pdu.RequestId += 1;
}
pdu.VbList.Clear();
pdu.VbList.Add(getOid);
if (Version == "V1")
{
result = (SnmpV1Packet)target.Request(pdu, param);
}
if (Version == "V2")
{
result = (SnmpV2Packet)target.Request(pdu, param);
}
}
catch (Exception e) { }
target.Close();
deviceWalkData.UpdateWalkTowerDeviceGetSend(result, getOid, IP);
return(result.Pdu.VbList[0].Value.ToString());
}
public void getData()
{
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver2;
IpAddress agent = new IpAddress(ipAddr);
UdpTarget target = new UdpTarget((System.Net.IPAddress)agent, nPort, timeOut, retry);
if (pdu.RequestId != 0)
{
pdu.RequestId += 1;
pdu.VbList.Clear();
pdu.VbList.Add(test);
SnmpV2Packet result = (SnmpV2Packet)target.Request(pdu, param);
if (result != null)
{
if (result.Pdu.ErrorStatus != 0)
{
Console.WriteLine("Error in SNMP. Error {0}, Index {1}",
result.Pdu.ErrorStatus,
result.Pdu.ErrorIndex);
}
else
{
response = result.Pdu.VbList[0].Value.ToString();
Console.WriteLine("Data is {0} .", result.Pdu.VbList[0].Value.ToString());
}
}
else
{
Console.WriteLine("No response received from SNMP");
}
}
target.Close();
}
private void GetSNMPDataFromSingleAgent(AgentDataModel agent)
{
try
{
DatabaseConnectionManager connection = new DatabaseConnectionManager(_connectionString);
OctetString community = new OctetString("public");
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver2;
IpAddress agentIpAddress = new IpAddress(agent.IPAddress);
UdpTarget target = new UdpTarget((IPAddress)agentIpAddress, agent.Port, 2000, 1);
try
{
this.WalkThroughOid(target, connection, agent);
}
finally
{
target.Close();
}
}
catch (SnmpException e)
{
DatabaseConnectionManager connection = new DatabaseConnectionManager(_connectionString);
connection.UpdateStatusOfAgent(agent.AgentNr, 3);
ExceptionCore.HandleException(ExceptionCategory.Low, e);
}
catch (SqlException e)
{
ExceptionCore.HandleException(ExceptionCategory.Fatal, e);
}
catch (Exception e)
{
ExceptionCore.HandleException(ExceptionCategory.Normal, e);
}
}
void SnmpAsyncResponseCallback(AsyncRequestResult result, SnmpPacket packet)
{
//If result is null then agent didn't reply or we couldn't parse the reply.
if (result == AsyncRequestResult.NoError && packet != null)
{
// ErrorStatus other then 0 is an error returned by
// the Agent - see SnmpConstants for error definitions
if (packet.Pdu.ErrorStatus != 0)
{
// agent reported an error with the request
TipMessage = string.Format("SNMP应答数据包中有错误信息. Error {0} index {1}", packet.Pdu.ErrorStatus, packet.Pdu.ErrorIndex);
errorStatus = false;
NotifyPropertyChanged("TotalStatus");
}
else
{
errorStatus = true;
//ifAdminStatus//ifOperStatus//ifInOctets //ifOutOctets
bool tempAdminStatus, tempOperStatus;
if (packet.Pdu.VbList[0].Value as Integer32 == 1)
{
tempAdminStatus = true;
}
else
{
tempAdminStatus = false;
}
if (packet.Pdu.VbList[1].Value as Integer32 == 1)
{
tempOperStatus = true;
}
else
{
tempOperStatus = false;
}
if (tempAdminStatus != adminStatus || tempOperStatus != operStatus)
{
adminStatus = tempAdminStatus;
operStatus = tempOperStatus;
NotifyPropertyChanged("Status");
NotifyPropertyChanged("StatusDescr");
NotifyPropertyChanged("TotalStatus");
if (inSpeed != -1)
{
TipMessage = string.Format("AdminStatus:{0}\nOperStatus:{1}", adminStatus ? "up" : "down", operStatus ? "up" : "down");
}
}
if (inSpeed == -1)
{
//这次是第一次获取数据
oldInOctets = packet.Pdu.VbList[2].Value as Counter32;
oldIOutOctets = packet.Pdu.VbList[3].Value as Counter32;
oldTime = DateTime.Now;
inSpeed = 0;
outSpeed = 0;
}
else
{
newInOctets = packet.Pdu.VbList[2].Value as Counter32;
newOutOctets = packet.Pdu.VbList[3].Value as Counter32;
DateTime now = DateTime.Now;
double interval = (now - oldTime).TotalSeconds;
oldTime = now;
inSpeed = Math.Round((newInOctets - oldInOctets) * 0.008 / interval, 2); //结果为 kb/s
outSpeed = Math.Round((newOutOctets - oldIOutOctets) * 0.008 / interval, 2);
SpeedRealTime = string.Format("In: {0}kb/s; Out: {1}kb/s", inSpeed, outSpeed);
oldInOctets = newInOctets;
oldIOutOctets = newOutOctets;
uiDispatcher.Invoke(new Action(() =>
{
DataPoint dpIn = new DataPoint();
dpIn.XValue = DateTime.Now;
dpIn.YValue = inSpeed;
DataPoint dpOut = new DataPoint();
dpOut.XValue = DateTime.Now;
dpOut.YValue = outSpeed;
if (InSpeedDataPointList.Count >= 30)
{
InSpeedDataPointList.RemoveAt(0);
}
InSpeedDataPointList.Add(dpIn);
if (OutSpeedDataPointList.Count >= 30)
{
OutSpeedDataPointList.RemoveAt(0);
}
OutSpeedDataPointList.Add(dpOut);
}));
if (IsShowSpeedAlarm)
{
//SpeedAlarmStatus
bool tempSpeedAlarmStatus = (inSpeed <= maxInSpeed) && (outSpeed <= maxOutSpeed);
if (tempSpeedAlarmStatus != SpeedAlarmStatus)
{
SpeedAlarmStatus = tempSpeedAlarmStatus;
TipMessage = string.Format("In:{0}kb/s{1};Out:{2}kb/s{3}", inSpeed, (inSpeed <= maxInSpeed) ? "正常" : "超限!", outSpeed, (outSpeed <= maxOutSpeed) ? "正常" : "超限!");
}
}
}
}
}
else
{
TipMessage = "没有SNMP应答数据包";
}
target.Close();
}
public SNMPResultSet[] Walk(string pOID)
{
List <SNMPResultSet> snmpResults = new List <SNMPResultSet>();
// Define agent parameters class
AgentParameters param = new AgentParameters(new OctetString(CommunityName));
// Set SNMP version to 2 (GET-BULK only works with SNMP ver 2 and 3)
param.Version = SnmpVersion.Ver2;
// Construct target
UdpTarget target = new UdpTarget((IPAddress)AgentIP, 161, 2000, 1);
// Define Oid that is the root of the MIB
// tree you wish to retrieve
Oid rootOid = new Oid(pOID); // 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))
{
snmpResults.Add(new SNMPResultSet(v.Oid.ToString(), SnmpConstants.GetTypeName(v.Value.Type), v.Value.ToString()));
if (v.Value.Type == SnmpConstants.SMI_ENDOFMIBVIEW)
{
lastOid = null;
}
else
{
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.Close();
return(snmpResults.ToArray());
}
static void Main(string[] args)
{
// SNMP community name
OctetString community = new OctetString("public");
// Define agent parameters class
AgentParameters param = new AgentParameters(community);
// Set SNMP version to 1 (or 2)
param.Version = SnmpVersion.Ver1;
// Construct the agent address object
//IpAddress agent = new IpAddress("127.0.0.1"); //Taylor: Change the 127.0.0.1 to the IP address of your own controller's
IpAddress agent = new IpAddress("192.168.2.109"); //Taylor: Change the 127.0.0.1 to the IP address of your own controller's
// Construct target
UdpTarget target = new UdpTarget((IPAddress)agent, 501, 2000, 0); //Taylor: 503 should be the same NTCIP port in your controller's network setting. You may change to other port numbers (but be consistent with your controller) Other numbers do not matter
// Pdu class used for all relevant requests
Pdu pdu1 = new Pdu(PduType.Get);
Pdu pdu2 = new Pdu(PduType.Get);
Pdu pdu3 = new Pdu(PduType.Get);
Pdu pdu4 = new Pdu(PduType.Get);
Pdu pdu5 = new Pdu(PduType.Get);
Pdu pdu6 = new Pdu(PduType.Get);
Pdu pdu7 = new Pdu(PduType.Get);
Pdu pdu8 = new Pdu(PduType.Get);
Pdu pdu9 = new Pdu(PduType.Get);
Pdu pdu10 = new Pdu(PduType.Get);
Pdu pdu11 = new Pdu(PduType.Get);
Pdu pdu12 = new Pdu(PduType.Get);
Pdu pdu13 = new Pdu(PduType.Get);
Pdu pdu14 = new Pdu(PduType.Get);
Pdu pdu15 = new Pdu(PduType.Get);
Pdu pdu16 = new Pdu(PduType.Get);
//pdu class for set //taylor: add in May 2019
Pdu pdu17 = new Pdu(PduType.Set);
Pdu pdu18 = new Pdu(PduType.Set);
Pdu pdu19 = new Pdu(PduType.Set);
Pdu pdu20 = new Pdu(PduType.Set);
Pdu pdu21 = new Pdu(PduType.Set);
Pdu pdu22 = new Pdu(PduType.Set);
pdu1.VbList.Add("1.3.6.1.4.1.1206.4.2.1.1.4.1.4.1"); //Taylor: green status of Phase 1-8;it will be a decimal integer. you need to convert it a 9-bit binary. for each bit, 1 is current green 0 is not green
pdu2.VbList.Add("1.3.6.1.4.1.1206.4.2.1.1.4.1.4.2"); //Taylor: Phase 9-16; if not activated, then the returned value is zero
pdu3.VbList.Add("1.3.6.1.4.1.1206.4.2.1.1.4.1.3.1"); //Taylor: yellow status of Phase 1-8; convert the returned decimal integer to binary. if a bit is 1, then currently that phase is yellow. otherwise is not yellow
pdu4.VbList.Add("1.3.6.1.4.1.1206.4.2.1.1.4.1.3.2"); //Taylor: yellow phase 9-16; if the phase is no activated, then return value is zero
//Taylor: no need to poll red since if neither green nor yellow, then it's red
/////////////////////Ped phase status
pdu5.VbList.Add("1.3.6.1.4.1.1206.4.2.1.1.4.1.7.1"); //Taylor: walk status of Ped Phase 1-8; convert the returned decimal integer to binary. if a bit is 1, then currently that phase is yellow. otherwise is not yellow
pdu6.VbList.Add("1.3.6.1.4.1.1206.4.2.1.1.4.1.7.2"); //Taylor: walk status of Ped Phase 9-16; convert the returned decimal integer to binary. if a bit is 1, then currently that phase is yellow. otherwise is not yellow
pdu7.VbList.Add("1.3.6.1.4.1.1206.4.2.1.1.4.1.6.1"); //Taylor: ped clearance status of Ped Phase 1-8; convert the returned decimal integer to binary. if a bit is 1, then currently that phase is yellow. otherwise is not yellow
pdu8.VbList.Add("1.3.6.1.4.1.1206.4.2.1.1.4.1.6.2"); //Taylor: ped clearance of Ped Phase 9-16; convert the returned decimal integer to binary. if a bit is 1, then currently that phase is yellow. otherwise is not yellow
//if a ped phase is neither walk nor ped clearance. then it's solid "don't walk"
//Poll dets status
pdu9.VbList.Add("1.3.6.1.4.1.1206.4.2.1.2.4.1.2.1"); //Taylor: det status of channel 1-8; returned a decimal integer. converted to a binary first
pdu10.VbList.Add("1.3.6.1.4.1.1206.4.2.1.2.4.1.2.2"); //Taylor: det status of channel 9-16; returned a decimal integer. converted to a binary first
pdu11.VbList.Add("1.3.6.1.4.1.1206.4.2.1.2.4.1.2.3"); //Taylor: det status of channel 17-24; returned a decimal integer. converted to a binary first
pdu12.VbList.Add("1.3.6.1.4.1.1206.4.2.1.2.4.1.2.4"); //Taylor: det status of channel 25-32; returned a decimal integer. converted to a binary first
pdu13.VbList.Add("1.3.6.1.4.1.1206.4.2.1.2.4.1.2.5"); //Taylor: det status of channel 33-40; returned a decimal integer. converted to a binary first
pdu14.VbList.Add("1.3.6.1.4.1.1206.4.2.1.2.4.1.2.6"); //Taylor: det status of channel 41-48; returned a decimal integer. converted to a binary first
pdu15.VbList.Add("1.3.6.1.4.1.1206.4.2.1.2.4.1.2.7"); //Taylor: det status of channel 49-56; returned a decimal integer. converted to a binary first
pdu16.VbList.Add("1.3.6.1.4.1.1206.4.2.1.2.4.1.2.8"); //Taylor: det status of channel 57-64; returned a decimal integer. converted to a binary first
//Phase controls //
pdu17.VbList.Add(new Oid("1.3.6.1.4.1.1206.4.2.1.1.5.1.2.1"), new Integer32(255)); //Taylor: phase 1~8 omit (if binary, from right to left: phase 1-8, but you will need to input the corresponding decimal). e.g., if you wish to omit 3 and 7. the binary value will be 01000100 and the decimal value is 68. replace the last digit in the 1.3.6.xxxx.2.1 with 2 if you wish to omit 9~16
pdu18.VbList.Add(new Oid("1.3.6.1.4.1.1206.4.2.1.1.5.1.3.1"), new Integer32(68)); //Taylor: Ped 1-8 omits
pdu19.VbList.Add(new Oid("1.3.6.1.4.1.1206.4.2.1.1.5.1.4.1"), new Integer32(68)); //Taylor: Phase 1-8 hold . 1.3....4."1". can be relaced with 2 for phase 9~16
pdu20.VbList.Add(new Oid("1.3.6.1.4.1.1206.4.2.1.1.5.1.5.1"), new Integer32(68)); //taylor place or lift phase 1-8 force-off (if you wish to force phase 1 and 5, the binary will be 00010001 and the decmial is 17
pdu21.VbList.Add(new Oid("1.3.6.1.4.1.1206.4.2.1.1.5.1.6.1"), new Integer32(68)); //Taylor: place (1) or lift (0)phase 1-8 vehicle call
pdu21.VbList.Add(new Oid("1.3.6.1.4.1.1206.4.2.1.1.5.1.7.1"), new Integer32(68)); //Taylor: place or lift ped call
// Taylor: Just use the green 1-8 and yellow 1-8 and det 1-8 as illustration. Please extend to others PDU as defined above if needed
SnmpV1Packet result1 = (SnmpV1Packet)target.Request(pdu1, param);
// green status of phase 1-8
if (result1 != null)
{
// ErrorStatus other then 0 is an error returned by
// the Agent - see SnmpConstants for error definitions
if (result1.Pdu.ErrorStatus != 0)
{
// agent reported an error with the request
Console.WriteLine("Error in SNMP reply. Error {0} index {1}",
result1.Pdu.ErrorStatus,
result1.Pdu.ErrorIndex);
}
else
{
// Reply variables are returned in the same order as they were added
// to the VbList
String green1to8 = result1.Pdu.VbList[0].Value.ToString();//Taylor: Using https://www.mathsisfun.com/binary-decimal-hexadecimal-converter.html to convert decimal to binary (from right to left, phase 1 to 8). You may need a function to do this in the code
}
}
// yellow status of phase 1-8
SnmpV1Packet result3 = (SnmpV1Packet)target.Request(pdu3, param);
if (result3 != null)
{
// ErrorStatus other then 0 is an error returned by
// the Agent - see SnmpConstants for error definitions
if (result3.Pdu.ErrorStatus != 0)
{
// agent reported an error with the request
Console.WriteLine("Error in SNMP reply. Error {0} index {1}",
result3.Pdu.ErrorStatus,
result3.Pdu.ErrorIndex);
}
else
{
// Reply variables are returned in the same order as they were added
// to the VbList
String yellow1to8 = result3.Pdu.VbList[0].Value.ToString();
}
}
// Status of det 1-8
SnmpV1Packet result9 = (SnmpV1Packet)target.Request(pdu9, param);
if (result9 != null)
{
// ErrorStatus other then 0 is an error returned by
// the Agent - see SnmpConstants for error definitions
if (result9.Pdu.ErrorStatus != 0)
{
// agent reported an error with the request
Console.WriteLine("Error in SNMP reply. Error {0} index {1}",
result9.Pdu.ErrorStatus,
result9.Pdu.ErrorIndex);
}
else
{
// Reply variables are returned in the same order as they were added
// to the VbList
String det1to8 = result9.Pdu.VbList[0].Value.ToString();
}
}
else
{
Console.WriteLine("No response received from SNMP agent.");
}
//Set (write) example: phase 1-8 omit
//SnmpV1Packet result17 = (SnmpV1Packet)target.Request(pdu17, param);
SnmpV1Packet result17 = target.Request(pdu17, param) as SnmpV1Packet;// Taylor: I set the omit value 255 (1111111). it means all 8 phases are omit and you should be able to see this status on your front panel
// ^ (from left to right means the status of phase 8, 7,...,2,1)
//If you wish to
if (result17 != null)
{
// ErrorStatus other then 0 is an error returned by
// the Agent - see SnmpConstants for error definitions
if (result17.Pdu.ErrorStatus != 0)
{
// agent reported an error with the request
Console.WriteLine("Error in SNMP reply. Error {0} index {1}", result17.Pdu.ErrorStatus, result17.Pdu.ErrorIndex);
}
else
{
// Reply variables are returned in the same order as they were added
// to the VbList
String phaseomit1to8 = result17.Pdu.VbList[0].Value.ToString();
}
}
else
{
Console.WriteLine("No response received from SNMP agent.");
}
target.Close();
}
public void GetInfoOID(DataTable dtInterfaceGauge, out DataTable dt)
{
dt = dtInterfaceGauge.Copy();
if (dtInterfaceGauge.Rows.Count > 0)
{
// SNMP community name
OctetString community = new OctetString(_community);
// Define agent parameters class
AgentParameters param = new AgentParameters(community);
// Set SNMP version to 1 (or 2)
param.Version = SnmpVersion.Ver1;
// Construct the agent address object
// IpAddress class is easy to use here because
// it will try to resolve constructor parameter if it doesn't
// parse to an IP address
IpAddress agent = new IpAddress(_ipHost);
// Construct target
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
// Pdu class used for all requests
Pdu pdu = new Pdu(PduType.Get);
for (int i = 0; i < dtInterfaceGauge.Rows.Count; i++)
{
pdu.VbList.Add(dtInterfaceGauge.Rows[i]["OIDIn"].ToString());
pdu.VbList.Add(dtInterfaceGauge.Rows[i]["OIDOut"].ToString());
}
// 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
// MessageBox.Show(result.Pdu.VbList[0].Oid.ToString() + " (" + SnmpConstants.GetTypeName(result.Pdu.VbList[0].Value.Type) + ") " + result.Pdu.VbList[0].Value.ToString());
for (int i = 0; i < dtInterfaceGauge.Rows.Count; i++)
{
dtInterfaceGauge.Rows[i]["InBandwidth"] = result.Pdu.VbList[i + i].Value.ToString();
dtInterfaceGauge.Rows[i]["OutBandwidth"] = result.Pdu.VbList[i + i + 1].Value.ToString();
}
dt = dtInterfaceGauge;
}
}
else
{
Console.WriteLine("No response received from SNMP agent.");
}
target.Close();
}
}
private void GetDisk()
{
OctetString community = new OctetString(txtConStr.Text);
AgentParameters param = new AgentParameters(community);
param.Version = SnmpVersion.Ver1;
try
{
IpAddress agent = new IpAddress(txtIPAgent.Text);
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
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
pdu.VbList.Add("1.3.6.1.2.1.25.1.2.0"); //hrSystemDate
pdu.VbList.Add("1.3.6.1.2.1.25.1.5.0"); //hrSystemNumUsers
pdu.VbList.Add("1.3.6.1.2.1.25.1.6.0"); //hrSystemProcesses
pdu.VbList.Add("1.3.6.1.2.1.25.2.2.0"); //hrMemorySize
//pdu.VbList.Add("1.3.6.1.2.1.1.5." + n.ToString()); //sysName
//pdu.VbList.Add("1.3.6.1.2.1.2.1." + n.ToString()); //ifNumbber
SnmpV1Packet result = (SnmpV1Packet)target.Request(pdu, param);
if (result != null)
{
if (result.Pdu.ErrorStatus != 0)
{
rtbGuiGet.Text = "Error in SNMP reply. Error " + result.Pdu.ErrorStatus + " index " + result.Pdu.ErrorIndex;
}
else
{
// Reply variables are returned in the same order as they were added
// to the VbList
////////////////////////////////////
//rtbAddInfo.Text = "hrSystemDate(" + result.Pdu.VbList[0].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[0].Value.Type) + "):\n\t" + result.Pdu.VbList[0].Value.ToString();
//rtbAddInfo.Text += "\n\t-------------------\n\t-------------------\n" + "hrSystemNumUsers(" + result.Pdu.VbList[1].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[1].Value.Type) + "): " + result.Pdu.VbList[1].Value.ToString();
//rtbAddInfo.Text += "\n\t-------------------\n" + "hrSystemProcesses(" + result.Pdu.VbList[2].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[2].Value.Type) + "): " + result.Pdu.VbList[2].Value.ToString();
rtbAddInfo.Text += "" + "hrMemorySize(" + result.Pdu.VbList[3].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[3].Value.Type) + "): " + result.Pdu.VbList[3].Value.ToString();
for (int i = 1; i < 10; i++)
{
pdu.Reset();
pdu.VbList.Add("1.3.6.1.2.1.25.2.3.1.3." + i.ToString());
try
{
result = (SnmpV1Packet)target.Request(pdu, param);
if (result.Pdu.VbList[0].Value.ToString() != "Null")
{
rtbAddInfo.Text += "\n\t" + "hrStorageDescr." + i.ToString() + "(" + result.Pdu.VbList[0].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[0].Value.Type) + "): " + result.Pdu.VbList[0].Value.ToString();
}
}
catch (Exception)
{ }
}
}
}
else
{
rtbAddInfo.Text = "No response received from SNMP agent.";
}
target.Close();
}
catch (Exception ex)
{
rtbGuiGet.Text = "Đã xảy ra lỗi: " + ex.Message.ToString();
}
}
private void GetOne(int n, RichTextBox rtb)
{
n++;
// SNMP community name
OctetString community = new OctetString(txtConStr.Text);
// Define agent parameters class
AgentParameters param = new AgentParameters(community);
// Set SNMP version to 1 (or 2)
param.Version = SnmpVersion.Ver1;
// Construct the agent address object
// IpAddress class is easy to use here because
// it will try to resolve constructor parameter if it doesn't
// parse to an IP address
try
{
IpAddress agent = new IpAddress(txtIPAgent.Text);
// Construct target
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
// Pdu class used for all requests
Pdu pdu = new Pdu(PduType.Get);
pdu.VbList.Add("1.3.6.1.2.1.2.2.1.2." + n.ToString()); //ifDescr
pdu.VbList.Add("1.3.6.1.2.1.2.2.1.3." + n.ToString()); //ifType
pdu.VbList.Add("1.3.6.1.2.1.2.2.1.5." + n.ToString()); //ifSpeed
pdu.VbList.Add("1.3.6.1.2.1.2.2.1.6." + n.ToString()); //ifPhysAddress
pdu.VbList.Add("1.3.6.1.2.1.2.2.1.7." + n.ToString()); //ifAdminStatus
pdu.VbList.Add("1.3.6.1.2.1.2.2.1.8." + n.ToString()); //ifOperStatus
// 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
rtb.Text = "Error in SNMP reply. Error " + result.Pdu.ErrorStatus + " index " + result.Pdu.ErrorIndex;
}
else
{
// Reply variables are returned in the same order as they were added to the VbList
rtb.Text = "ifDescr(" + result.Pdu.VbList[0].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[0].Value.Type) + "): " + "\n\t" + result.Pdu.VbList[0].Value.ToString();
rtb.Text = rtb.Text + "\n" + "ifType(" + result.Pdu.VbList[1].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[1].Value.Type) + "): " + "\n\t" + GetType(int.Parse(result.Pdu.VbList[1].Value.ToString()));
rtb.Text = rtb.Text + "\n" + "ifSpeed(" + result.Pdu.VbList[2].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[2].Value.Type) + "): " + "\n\t" + result.Pdu.VbList[2].Value.ToString();
rtb.Text = rtb.Text + "\n" + "ifPhysAddress(" + result.Pdu.VbList[3].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[3].Value.Type) + "): " + "\n\t" + result.Pdu.VbList[3].Value.ToString();
rtb.Text = rtb.Text + "\n" + "ifAdminStatus(" + result.Pdu.VbList[4].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[4].Value.Type) + "): " + "\n\t" + GetStatus(int.Parse(result.Pdu.VbList[4].Value.ToString()));
rtb.Text = rtb.Text + "\n" + "ifOperStatus(" + result.Pdu.VbList[5].Oid.ToString() + ") (" + SnmpConstants.GetTypeName(result.Pdu.VbList[5].Value.Type) + "): " + "\n\t" + GetStatus(int.Parse(result.Pdu.VbList[5].Value.ToString()));
}
}
else
{
rtb.Text = "No response received from SNMP agent.";
}
target.Close();
}
catch (Exception ex)
{
rtb.Text = "Đã xảy ra lỗi: " + ex.Message.ToString();
}
}
static void remoteCall(string[] args)
{
// SNMP community name
OctetString community = new OctetString("public");
// Define agent parameters class
AgentParameters param = new AgentParameters(community);
// Set SNMP version to 2 (GET-BULK only works with SNMP ver 2 and 3)
param.Version = SnmpVersion.Ver2;
// Construct the agent address object
// IpAddress class is easy to use here because
// it will try to resolve constructor parameter if it doesn't
// parse to an IP address
IpAddress agent = new IpAddress("127.0.0.1");
// Construct target
UdpTarget target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
// Define Oid that is the root of the MIB
// tree you wish to retrieve
Oid rootOid = new Oid("1.3.6.1.2.1.2.2.1.2"); // 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());
if (v.Value.Type == SnmpConstants.SMI_ENDOFMIBVIEW)
lastOid = null;
else
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.Close();
}
