IcmpV4Statistics.DestinationUnreachableMessagesSent Property

Definition

Namespace:

System.Net.NetworkInformation

Assembly:

System.Net.NetworkInformation.dll

Gets the number of Internet Control Message Protocol version 4 (ICMPv4) messages that were sent because of a packet having an unreachable address in its destination.

public:
 abstract property long DestinationUnreachableMessagesSent { long get(); };

public abstract long DestinationUnreachableMessagesSent { get; }

member this.DestinationUnreachableMessagesSent : int64

Public MustOverride ReadOnly Property DestinationUnreachableMessagesSent As Long

Property Value

Int64

An Int64 value that specifies the total number of Destination Unreachable messages sent.

Examples

The following example displays the value of this property.

void ShowIcmpV4UnreachableData()
{
   IPGlobalProperties ^ properties = IPGlobalProperties::GetIPGlobalProperties();
   IcmpV4Statistics ^ statistics = properties->GetIcmpV4Statistics();
   Console::WriteLine( "  Destination Unreachables ............ Sent: {0,-10}   Received: {1,-10}", 
      statistics->DestinationUnreachableMessagesSent, 
      statistics->DestinationUnreachableMessagesReceived );
}

public static void ShowIcmpV4UnreachableData()
{
    IPGlobalProperties properties = IPGlobalProperties.GetIPGlobalProperties();
    IcmpV4Statistics statistics = properties.GetIcmpV4Statistics();
    Console.WriteLine("  Destination Unreachables ............ Sent: {0,-10}   Received: {1,-10}",
        statistics.DestinationUnreachableMessagesSent,
        statistics.DestinationUnreachableMessagesReceived);
}

Public Shared Sub ShowIcmpV4UnreachableData() 
    Dim properties As IPGlobalProperties = IPGlobalProperties.GetIPGlobalProperties()
    Dim statistics As IcmpV4Statistics = properties.GetIcmpV4Statistics()
    Console.WriteLine("  Destination Unreachables ............ Sent: {0,-10}   Received: {1,-10}", statistics.DestinationUnreachableMessagesSent, statistics.DestinationUnreachableMessagesReceived)

End Sub

Remarks

A Destination Unreachable message can be sent to the computer that is the source of a packet for any of the following reasons:

• The computer cannot find a route to the destination address.

• Communication with the destination address is administratively prohibited. For example, a firewall prevents delivery of packets to the destination.

• The destination address is unreachable.

• The destination port is unreachable. For example, there is no listener available for the packet's protocol.