//Router  1
Ping ping1 = new Ping();
PingReply pingresult1 = ping1.Send(textBoxRouter1.Text, timeout, buffer, options);
if (pingresult1.Status.ToString() == "Success")
{
    pictureBoxRouter1.Image = Properties.Resources.router_online;
    toolTip0.SetToolTip(pictureBoxRouter1, "Ethernet: " + textBoxRouter1.Text + " | UP" + Environment.NewLine + "Serial 0: " + "192.168." + textBoxSerialAB.Text + ".2" + " | UP" + Environment.NewLine + "Ethernet: " + textBoxRouter1.Text + " | UP" + Environment.NewLine + "Serial 1: " + "192.168." + textBoxSerialBC.Text + ".1" + " | UP");

    richTextBoxOutput.Text += "-------------------------------------------";
    richTextBoxOutput.Text += Environment.NewLine + "ROUTER - B";
    richTextBoxOutput.Text += Environment.NewLine;
    richTextBoxOutput.Text += Environment.NewLine + "Ethernet: " + pingresult1.Address.ToString();
    richTextBoxOutput.Text += Environment.NewLine + "Serial 0: " + "192.168." + textBoxSerialAB.Text + ".2";
    richTextBoxOutput.Text += Environment.NewLine + "Serial 1: " + "192.168." + textBoxSerialBC.Text + ".1";
    richTextBoxOutput.Text += Environment.NewLine;
    richTextBoxOutput.Text += Environment.NewLine + "Response time: " + pingresult1.RoundtripTime + "ms";
    richTextBoxOutput.Text += Environment.NewLine + "Time to live: " + pingresult1.Options.Ttl;
    richTextBoxOutput.Text += Environment.NewLine + "Don't fragment: " + pingresult1.Options.DontFragment;
    richTextBoxOutput.Text += Environment.NewLine + "Buffer size: " + pingresult1.Buffer.Length;
    richTextBoxOutput.Text += Environment.NewLine + "-------------------------------------------";
}
else
{

}