294 lines
9.9 KiB
HTML
294 lines
9.9 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML>
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<HEAD>
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<META http-equiv="Content-Type" content="text/html; charset=utf-8">
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<!-- (C) Copyright IBM Corporation, 2005 -->
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<TITLE>TCP/IP subnet calculator</TITLE>
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<link rel="stylesheet" type="text/css" href="../rzahg/ic.css">
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<SCRIPT language="JavaScript" type="text/javascript">
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<!-- //////////
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var calcWindowMessage = "<body bgcolor='#FFFFCC'><h4>Writing Output...<\/h4><\/body>";
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var calcWindowMessage1 = "<body bgcolor='#FFFFCC'><h4>Calculating...<\/h4><\/body>";
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var throughmess = "through";
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var tr1 = "<tr bgcolor='#CCCCCC'>";
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var tr2 = "<tr>";
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var text1 = "<table>";
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var text2 = "<\/table>";
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var text3 = "<form><center>";
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var text5 = "<input type='button' value='<< Back ' onclick='goback()'> ";
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var text6 = "<input type='button' value='<< Show Previous 512 ' onclick='showbefore()'> ";
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var text7 = "<input type='button' value=' Show Next 512 >>' onclick='showmore()'> ";
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var text8 = "<input type='button' value='Start Over' onclick='startover()'>";
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var text9 = "<\/form>";
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var youroutput3 = "<h2>TCP/IP subnet calculator<\/h2>";
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var youroutput2 = "<strong>Results for your subnets<\/strong>";
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//START NON-TRANSLATABLE
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//Obtain name of HTML file in parent frame.
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var parentDir = parent.window.location.href.substring(0,location.href.lastIndexOf('/')+1);
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var parentUrl = parent.window.location.href.substring(parentDir.length,parent.window.location.href.length+1);
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if (parentUrl.indexOf("#") >= 0) {
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parentUrl = parentUrl.substring(0,parentUrl.indexOf("#"));
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}
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//Is the hidden frame already loaded with the correct html?
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if (parentUrl != "rzak1advsubwelcome.htm") {
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window.location = "rzak1advsubwelcome.htm"; //load calculator frameset
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} else {
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//Obtain name of HTML file in hidden frame.
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var hiddenDir = parent.hidden.window.location.href.substring(0,location.href.lastIndexOf('/')+1);
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var hiddenUrl = parent.hidden.window.location.href.substring(hiddenDir.length,parent.hidden.window.location.href.length+1);
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if (hiddenUrl.indexOf("#") >= 0) { hiddenUrl = hiddenUrl.substring(0,hiddenUrl.indexOf("#"));}
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if (hiddenUrl != "rzak1advsubhidden.htm") {
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//Correct HTML not loaded, load it
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parent.window.location = "rzak1advsubwelcome.htm";
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}
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}
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var num_subnets = parseInt(parent.hidden.data[5]);
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var num_ips = parseInt(parent.hidden.data[4]);
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var seg1 = parseInt(parent.hidden.data[1]);
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var seg2 = parseInt(parent.hidden.data[2]);
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var seg3 = parseInt(parent.hidden.data[3]);
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var subnetmask = parent.hidden.data[6];
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var placeholder = parseInt(parent.hidden.data[7]);
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var seg4 = 0;
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var newseg2 = seg2;
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var newseg3 = seg3;
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var newseg4 = 0;
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var counter = 0;
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var classb = 1;
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var network = seg1 + "." + seg2 + "." + seg3 + "." + seg4;
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var flipcounter = 0;
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var done = 0;
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var theTime = new Date();
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var startTime;
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calculatesubnets(); /* Call master function */
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function calculatesubnets() {
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// These direct to the counting routines. It only counts one time through.
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if (placeholder == 0) {
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if (num_ips <= 256) {
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countless();
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}
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if ( num_ips>256 ) {
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countmore();
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}
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}
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// Done Calculating and storing
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writeit(); // function writeit() displays writes the output
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}
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function countless() {
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newseg4 = (seg4 + num_ips) - 1;
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for (var j = 0; j < num_subnets; j++) {
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jj = j + 1;
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storeme(); // stores each line of output into an array on the hidden page.
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seg4 = newseg4 + 1;
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if (seg4 >= 255) {
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seg3 = seg3 + 1;
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seg4 = 0;
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if (seg3 >= 256) {
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seg2 = seg2+1;
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seg3 = 0;
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}
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}
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newseg4 = (seg4 + num_ips - 1);
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newseg3 = seg3;
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}
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}
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// COUNT MORE COUNT MORE COUNT MORE COUNT MORE COUNT MORE
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function countmore() {
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// Class B Subnetting Class B Subnetting Class B Subnetting
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if ((num_ips * num_subnets) == 65536) {
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counter = (num_ips / 256);
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newseg3 = seg3 + counter-1;
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newseg2 = seg2;
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newseg4 = 255;
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for (var j = 0; j < num_subnets; j++) {
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jj = j+1;
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storeme();
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seg3 = newseg3 + 1;
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newseg3 = newseg3 + counter;
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}
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} else {
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// Class A Subnetting Class A Subnetting Class A Subnetting
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counter = (num_ips / 65536);
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newseg2 = seg2 + counter - 1;
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newseg3 = 255;
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newseg4 = 255;
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for (var j = 0; j < num_subnets; j++) {
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if (num_ips < 65536) {
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counter = num_ips / 256;
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newseg3 = seg3+counter - 1;
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newseg2 = seg2;
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if ( newseg3>=256 ) {
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seg2 = seg2 + 1;
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newseg2 = seg2;
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seg3 = 0;
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newseg3 = seg3 + counter - 1;
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}
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}
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jj = j + 1;
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storeme();
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if (num_ips < 65536) {
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seg3 = newseg3 + 1;
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seg2 = newseg2;
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} else {
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seg2 = newseg2 + 1;
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newseg2 = newseg2 + counter
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}
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}
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}
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}
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function storeme() {
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if ((jj % 2) != 0) {
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parent.hidden.myarray[jj] = tr1;
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} else {
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parent.hidden.myarray[jj] = tr2;
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}
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var network = "<font size='1'>" + seg1 + "." + seg2 + "." + seg3 + "." + seg4;
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var startaddress = "<font size='1'>" + seg1 + "." + seg2 + "." + seg3 + "." + (seg4 + 1);
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var endaddress = "<font size='1'>" + seg1 + "." + newseg2 + "." + newseg3 + "." + (newseg4 - 1);
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var broadcast = "<font size='1'>" + seg1 + "." + newseg2 + "." + newseg3 + "." + newseg4;
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parent.hidden.myarray[jj] += "<td><font size='-1'>" + jj + "<\/td>";
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parent.hidden.myarray[jj] += "<td>" + network + "<\/td>";
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parent.hidden.myarray[jj] += "<td>" + startaddress + "<\/td>";
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parent.hidden.myarray[jj] += "<td><font size='-1'>" + throughmess + "<\/td>";
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parent.hidden.myarray[jj] += "<td>" + endaddress + "<\/td>";
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parent.hidden.myarray[jj] += "<td>" + broadcast + "<\/td>";
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parent.hidden.myarray[jj] += "<\/tr>"
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}
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function goback() {
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// called by the back button. resets the placeholder value
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parent.hidden.test();
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//parent.hidden.document.DataObjects.storeValue(0, 7);
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parent.hidden.data[7] = 0;
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history.back();
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}
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function startover() {
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// called by the startover button. goes to welcome page
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window.location = "rzak1advsubwelcome.htm";
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parent.hidden.resetData();
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}
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function writeit() {
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document.write(youroutput3);
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// Displays the line counter if num_subnets is greater than 512
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if (num_subnets > 512 ) {
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var begin = parseInt(parent.hidden.data[7]);
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if (begin == 0) {
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begin = 1;
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}
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var end = begin + 511;
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//END NON-TRANSLATABLE
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youroutput1 = "<br><strong> Results for <font color='#FF0000'>Subnets " + begin + " through " + end + "<\/font><\/strong>";
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//START NON-TRANSLATABLE
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document.write(youroutput1);
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} else {
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document.write(youroutput2);
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}
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// Headings for all ouput
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//END NON-TRANSLATABLE
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yournetworkaddress = "<ul><li>Your network address is " + network + ".<\/li>";
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yourdata = "<li>You asked to subnet your network address into " + num_subnets + " subnets with " + num_ips + " IP addresses.<\/li>";
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yoursubnetmask = "<li>Your subnet mask for each subnetwork is " + subnetmask + ".<p><\/li><\/ul>";
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tableheader = "<tr><th id='COL1'><font size='1'><strong>Subnet no.<\/th><th id='COL2'><font size='1'><strong>Network address <\/th><th id='COL3'><font size='1'><strong>First host<\/th><th id='COL4'><\/th><th id='COL5'><font size='1'><strong>Last host<\/th><th id='COL6'><font size='1'><strong>Broadcast address<\/tH><\/tr>";
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//START NON-TRANSLATABLE
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document.write(yournetworkaddress);
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document.write(yourdata);
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document.write(yoursubnetmask);
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document.write(text1);
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document.write(tableheader);
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if (placeholder == 0) {
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writeplaceholder = 1;
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} else {
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writeplaceholder = placeholder;
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}
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for (var i = writeplaceholder; i < num_subnets + 1; i++) {
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document.write(parent.hidden.myarray[i]);
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// stops output at every 512 -- stores the number it stopped at
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if ((i % 512 == 0) && (i != 0)) {
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parent.hidden.data[7] = i+1;
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break;
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}
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}
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// this variable is where the segmented output stopped
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var newplaceholder = parseInt(parent.hidden.data[7]);
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document.write(text2);
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document.write(text3);
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//document.write(text4);
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// displays the back button that goes to select size panel
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if (newplaceholder <= 513) {
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document.write(text5);
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}
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// displays the show previous page of subnets
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if (((newplaceholder > num_subnets) || ((newplaceholder - 512) > 512)) && (newplaceholder != 513)) {
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document.write(text6);
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}
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// shows the next page of subnets if it exists
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if ((newplaceholder > 512) && (newplaceholder < num_subnets)) {
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document.write(text7);
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}
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document.write(text8);
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document.write(text9);
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}
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function showmore() {
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// called when more subnets are needed. reloads the page. initiated by the show more button
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window.location = "rzak1advsubfinal.htm";
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}
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function showbefore() {
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// shows the previous page of subnets if exists. sets the counters backwards and recalls this page.
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// initiated by the show previous button
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var countback = parseInt(parent.hidden.data[7]);
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countback = (countback - 512) - 512;
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parent.hidden.document.data[7] = countback;
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window.location = "rzak1advsubfinal.htm";
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}
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function printout() {
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// called by the print button. brings up the print dialog
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self.print();
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}
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//END NON-TRANSLATABLE
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//////////-->
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</script>
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</HEAD>
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<body>
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<noscript>
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<p>This calculator uses Javascript to function. Ensure you are using a browser which supports Javascript and that
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Javascript is enabled.</p></noscript>
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</body>
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</HTML>
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