private List <SnmpResult <int, string> > MapMacAddresses(SnmpTarget snmpTarget)
{
var fdbAddressTable = ReadFdbAddressTable(snmpTarget);
var fdbPortTable = ReadFdbPortTable(snmpTarget);
var portMappings = fdbPortTable.Select(port => new
{
PortNumber = Convert.ToInt32(port.Value.ToString()),
Oid = port.Oid.ToString()
})
.GroupBy(mappings => mappings.PortNumber)
.Where(mappings => mappings.Any())
.ToDictionary(mapping => mapping.Key, mapping => mapping.ToList());
var macMappings = fdbAddressTable.Select(port => new
{
MacAddress = port.Value.ToString(),
Oid = port.Oid.ToString().Replace(SnmpOids.Dot1DTpFdbAddress, SnmpOids.Dot1DTpFdbPort)
})
.GroupBy(mappings => mappings.Oid)
.Where(mappings => mappings.Any())
.ToDictionary(mapping => mapping.Key, mapping => mapping.First().MacAddress);
var results = new List <SnmpResult <int, string> >();
foreach (var portMapping in portMappings)
{
string macAddress;
foreach (var oid in portMapping.Value)
{
if (macMappings.TryGetValue(oid.Oid, out macAddress))
{
var result = new SnmpResult <int, string>
{
Identifier = portMapping.Key,
Result = macAddress.Replace(' ', ':'),
SnmpTarget = snmpTarget,
Oid = ""
};
results.Add(result);
}
}
}
return(results);
}
private List <SnmpResult <int, long> > ProcessTargetsTraffic(SnmpTarget snmpTarget, string snmpOid,
string communityString = "public")
{
var results = new List <SnmpResult <int, long> >();
var community = new OctetString(communityString);
var param = new AgentParameters(community)
{
Version = SnmpVersion.Ver2
};
var agent = new IpAddress(snmpTarget.IpAddress);
var target = new UdpTarget((IPAddress)agent, 161, 2000, 1);
var rootOid = new Oid(snmpOid);
var lastOid = (Oid)rootOid.Clone();
var pdu = new Pdu(PduType.GetBulk)
{
NonRepeaters = 0, MaxRepetitions = 5
};
while (lastOid != null)
{
if (pdu.RequestId != 0)
{
pdu.RequestId += 1;
}
pdu.VbList.Clear();
pdu.VbList.Add(lastOid);
var result = (SnmpV2Packet)target.Request(pdu, param);
if (result != null)
{
if (result.Pdu.ErrorStatus != 0)
{
Console.WriteLine("Error in SNMP reply. Error {0} index {1}",
result.Pdu.ErrorStatus,
result.Pdu.ErrorIndex);
break;
}
foreach (var v in result.Pdu.VbList)
{
var current = new SnmpResult <int, long>();
if (rootOid.IsRootOf(v.Oid))
{
Console.WriteLine("{0} ({1}): {2}",
v.Oid,
SnmpConstants.GetTypeName(v.Value.Type),
v.Value);
current.Result = Convert.ToInt64(v.Value.ToString());
current.Identifier = Convert.ToInt32(v.Oid.ToString().Split('.').Last());
current.Oid = v.Oid.ToString();
current.SnmpTarget = snmpTarget;
results.Add(current);
lastOid = v.Value.Type == SnmpConstants.SMI_ENDOFMIBVIEW ? null : v.Oid;
}
else
{
lastOid = null;
}
}
}
else
{
Console.WriteLine("No response received from SNMP agent.");
}
}
target.Close();
return(results);
}