DuplicateAddressDetectionState DuplicateAddressDetectionState DuplicateAddressDetectionState DuplicateAddressDetectionState Enum

Definition

Gibt den aktuellen Zustand einer IP-Adresse an.Specifies the current state of an IP address.

public enum class DuplicateAddressDetectionState
public enum DuplicateAddressDetectionState
type DuplicateAddressDetectionState = 
Public Enum DuplicateAddressDetectionState
Vererbung
DuplicateAddressDetectionStateDuplicateAddressDetectionStateDuplicateAddressDetectionStateDuplicateAddressDetectionState

Felder

Deprecated Deprecated Deprecated Deprecated 3

Die Adresse ist gültig, doch läuft ihre Leaselebensdauer bald ab. Daher sollte sie nicht von Anwendungen verwendet werden.The address is valid, but it is nearing its lease lifetime and should not be used by applications.

Duplicate Duplicate Duplicate Duplicate 2

Die Adresse ist nicht eindeutig.The address is not unique. Der Adresse sollte nicht der Netzwerkschnittstelle zugewiesen werden.This address should not be assigned to the network interface.

Invalid Invalid Invalid Invalid 0

Die Adresse ist ungültig.The address is not valid. Eine ungültige Adresse ist abgelaufen und nicht mehr einer Schnittstelle zugewiesen. Anwendungen sollten keine Datenpakete an die Adresse senden.A nonvalid address is expired and no longer assigned to an interface; applications should not send data packets to it.

Preferred Preferred Preferred Preferred 4

Die Adresse ist gültig, und ihre Verwendung ist nicht eingeschränkt.The address is valid and its use is unrestricted.

Tentative Tentative Tentative Tentative 1

Die Evaluierung der Adresse durch die Prozedur zur Erkennung doppelter Adressen wurde nicht erfolgreich abgeschlossen.The duplicate address detection procedure's evaluation of the address has not completed successfully. Anwendungen sollten die Adresse nicht verwenden, da sie noch nicht gültig ist und an sie gesendete Pakete verworfen werden.Applications should not use the address because it is not yet valid and packets sent to it are discarded.

Beispiele

Im folgenden Codebeispiel werden Unicastadressinformationen ermittelt.The following code example determines unicast address information.

void DisplayUnicastAddresses()
{
   Console::WriteLine( "Unicast Addresses" );
   array<NetworkInterface^>^adapters = NetworkInterface::GetAllNetworkInterfaces();
   System::Collections::IEnumerator^ myEnum17 = adapters->GetEnumerator();
   while ( myEnum17->MoveNext() )
   {
      NetworkInterface ^ adapter = safe_cast<NetworkInterface ^>(myEnum17->Current);
      IPInterfaceProperties ^ adapterProperties = adapter->GetIPProperties();
      UnicastIPAddressInformationCollection ^ uniCast = adapterProperties->UnicastAddresses;
      if ( uniCast->Count > 0 )
      {
         Console::WriteLine( adapter->Description );
         String^ lifeTimeFormat = "dddd, MMMM dd, yyyy  hh:mm:ss tt";
         System::Collections::IEnumerator^ myEnum18 = uniCast->GetEnumerator();
         while ( myEnum18->MoveNext() )
         {
            UnicastIPAddressInformation ^ uni = safe_cast<UnicastIPAddressInformation ^>(myEnum18->Current);
            DateTime when;
            Console::WriteLine( "  Unicast Address ......................... : {0}", 
               uni->Address );
            Console::WriteLine( "     Prefix Origin ........................ : {0}", 
               uni->PrefixOrigin );
            Console::WriteLine( "     Suffix Origin ........................ : {0}", 
               uni->SuffixOrigin );
            Console::WriteLine( "     Duplicate Address Detection .......... : {0}", 
               uni->DuplicateAddressDetectionState );
            
            // Format the lifetimes as Sunday, February 16, 2003 11:33:44 PM
            // if en-us is the current culture.
            // Calculate the date and time at the end of the lifetimes.    
            when = DateTime::UtcNow + TimeSpan::FromSeconds( (double)uni->AddressValidLifetime );
            when = when.ToLocalTime();
            Console::WriteLine( "     Valid Life Time ...................... : {0}", 
               when.ToString( lifeTimeFormat, System::Globalization::CultureInfo::CurrentCulture ) );
            when = DateTime::UtcNow + TimeSpan::FromSeconds( (double)uni->AddressPreferredLifetime );
            when = when.ToLocalTime();
            Console::WriteLine( "     Preferred life time .................. : {0}", 
               when.ToString( lifeTimeFormat, System::Globalization::CultureInfo::CurrentCulture ) );
            when = DateTime::UtcNow + TimeSpan::FromSeconds( (double)uni->DhcpLeaseLifetime );
            when = when.ToLocalTime();
            Console::WriteLine( "     DHCP Leased Life Time ................ : {0}", 
               when.ToString( lifeTimeFormat, System::Globalization::CultureInfo::CurrentCulture ) );
         }
         Console::WriteLine();
      }
   }
}
public static void DisplayUnicastAddresses()
{
    Console.WriteLine("Unicast Addresses");
    NetworkInterface[] adapters  = NetworkInterface.GetAllNetworkInterfaces();
    foreach (NetworkInterface adapter in adapters)
    {
        IPInterfaceProperties adapterProperties = adapter.GetIPProperties();
        UnicastIPAddressInformationCollection uniCast = adapterProperties.UnicastAddresses;
        if (uniCast.Count >0)
        {
            Console.WriteLine(adapter.Description);
            string lifeTimeFormat = "dddd, MMMM dd, yyyy  hh:mm:ss tt";
            foreach (UnicastIPAddressInformation uni in uniCast)
            {
                DateTime when;
                
                Console.WriteLine("  Unicast Address ......................... : {0}", uni.Address);
                Console.WriteLine("     Prefix Origin ........................ : {0}", uni.PrefixOrigin);
                Console.WriteLine("     Suffix Origin ........................ : {0}", uni.SuffixOrigin);
                Console.WriteLine("     Duplicate Address Detection .......... : {0}", 
                    uni.DuplicateAddressDetectionState);
                    
                // Format the lifetimes as Sunday, February 16, 2003 11:33:44 PM
                // if en-us is the current culture.
                
                // Calculate the date and time at the end of the lifetimes.    
                when = DateTime.UtcNow + TimeSpan.FromSeconds(uni.AddressValidLifetime);
                when = when.ToLocalTime();    
                Console.WriteLine("     Valid Life Time ...................... : {0}", 
                    when.ToString(lifeTimeFormat,System.Globalization.CultureInfo.CurrentCulture)
                );
                when = DateTime.UtcNow + TimeSpan.FromSeconds(uni.AddressPreferredLifetime);   
                when = when.ToLocalTime();
                Console.WriteLine("     Preferred life time .................. : {0}", 
                    when.ToString(lifeTimeFormat,System.Globalization.CultureInfo.CurrentCulture)
                ); 
                
                when = DateTime.UtcNow + TimeSpan.FromSeconds(uni.DhcpLeaseLifetime);
                when = when.ToLocalTime(); 
                Console.WriteLine("     DHCP Leased Life Time ................ : {0}", 
                    when.ToString(lifeTimeFormat,System.Globalization.CultureInfo.CurrentCulture)
                );
            }
            Console.WriteLine();
        }
    }
}
Public Shared Sub DisplayUnicastAddresses() 

    Console.WriteLine("Unicast Addresses")
    Dim adapters As NetworkInterface() = NetworkInterface.GetAllNetworkInterfaces()
    Dim adapter As NetworkInterface
    For Each adapter In  adapters
        Dim adapterProperties As IPInterfaceProperties = adapter.GetIPProperties()
        Dim uniCast As UnicastIPAddressInformationCollection = adapterProperties.UnicastAddresses
        If uniCast.Count > 0 Then
            Console.WriteLine(adapter.Description)
            Dim lifeTimeFormat As String = "dddd, MMMM dd, yyyy  hh:mm:ss tt"
            Dim uni As UnicastIPAddressInformation
            For Each uni In  uniCast
                Dim [when] As DateTime
                
                Console.WriteLine("  Unicast Address ......................... : {0}", uni.Address)
                Console.WriteLine("     Prefix Origin ........................ : {0}", uni.PrefixOrigin)
                Console.WriteLine("     Suffix Origin ........................ : {0}", uni.SuffixOrigin)
                Console.WriteLine("     Duplicate Address Detection .......... : {0}", uni.DuplicateAddressDetectionState)
                
                ' Format the lifetimes as Sunday, February 16, 2003 11:33:44 PM
                ' if en-us is the current culture.
                ' Calculate the date and time at the end of the lifetimes.    
                [when] = DateTime.UtcNow + TimeSpan.FromSeconds(uni.AddressValidLifetime)
                [when] = [when].ToLocalTime()
                Console.WriteLine("     Valid Life Time ...................... : {0}", [when].ToString(lifeTimeFormat, System.Globalization.CultureInfo.CurrentCulture))
                [when] = DateTime.UtcNow + TimeSpan.FromSeconds(uni.AddressPreferredLifetime)
                [when] = [when].ToLocalTime()
                Console.WriteLine("     Preferred life time .................. : {0}", [when].ToString(lifeTimeFormat, System.Globalization.CultureInfo.CurrentCulture))
                
                [when] = DateTime.UtcNow + TimeSpan.FromSeconds(uni.DhcpLeaseLifetime)
                [when] = [when].ToLocalTime()
                Console.WriteLine("     DHCP Leased Life Time ................ : {0}", [when].ToString(lifeTimeFormat, System.Globalization.CultureInfo.CurrentCulture))
            Next uni
            Console.WriteLine()
        End If
    Next adapter

End Sub

Hinweise

Um sicherzustellen, dass alle Schnittstellen in einem Netzwerk über eine eindeutige Adresse verfügen, ist der Schnittstellen Host für die Ausführung eines Algorithmus zum Erkennen doppelter Adressen in Unicastadressen verantwortlich.To help ensure that all interfaces on a network have a unique address, the interface host is responsible for running a "duplicate address detection" algorithm on unicast addresses. Der Zweck dieses Algorithmus besteht darin zu versuchen, nicht eindeutige Adressen im Netzwerk zu verhindern.The purpose of this algorithm is to attempt to prevent non-unique addresses on the network. Dieser Prozess ist in IETF RFC 1971 definiert.This process is defined in IETF RFC 1971.

Diese Enumeration wird von der- UnicastIPAddressInformation Klasse MulticastIPAddressInformation und der-Klasse verwendet.This enumeration is used by the UnicastIPAddressInformation and MulticastIPAddressInformation classes. Instanzen dieser Klasse werden zurückgegeben, wenn Sie die Unicastadressinformationen für ein NetworkInterface -Objekt abrufen.Instances of this class are returned when you retrieve the unicast address information for a NetworkInterface object.

Gilt für: