Question

我使用System.Net.NetworkInformation.PingReply和System.Net.NetworkInformation.PingOptions在vb.net中编写一个简单的ping命令。但是PingOptions.Ttl总是显示128作为输出。以下是我的代码的一部分：

        Dim buffer As Byte() = Encoding.ASCII.GetBytes(data)

        Dim Myreply As System.Net.NetworkInformation.PingReply = MyPing.Send("10.99.162.201", 1000, buffer, options)

        If Myreply.Status = Net.NetworkInformation.IPStatus.Success Then

        PingResult = ("Reply from" & " " & Myreply.Address.ToString & ":" & _
        "bytes=" & Myreply.Buffer.Length.ToString & _
        " " & "time=" & Myreply.RoundtripTime.ToString & "ms" & " " & "TTL=" & options.Ttl)

        ElseIf Myreply.Status = Net.NetworkInformation.IPStatus.TimedOut Then
            PingResult = ("Request timed out.")
        Else
            PingResult = ("Error")
        End If

有人可以帮助我检查缺少什么来获得正确的结果吗？感谢。

Answer 1

Windows操作系统 TTL为128
和Linux的TTL是64

vb.net中的PingOptions.TTL始终显示128作为结果

1 个答案: