Free Windows Help Tutorials sponsored by inkjet printer cartridges dot org /title> <META HTTP-EQUIV="imagetoolbar" CONTENT="no"> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=ISO 8859-1"> <META name="description" Content="Hundreds of downloadable Windows help tutorials, articles and how-to guides sponsored by inkjet printer cartridges dot org."><style type="text/css">  </style> </head> <body bgcolor=#999999 vlink=blue link=blue> <span name = "INTRA" class="pg" style="top:0px; left:5px; width:714px; height:1010px"></span> <span name = "INTRA" style='top:0px; left:5px; height:1010px; width:714px' class='img'> <img src="pg0001im.png" height = "1010 width = "714" border="0"> </span> <span class='nav' style='left: 10px; top: 10px'><pre></pre></span><span name = "INTRA" style='top:108px; left:77px' class="ft4"><pre><font face='Arial'>How to Speed up</font></pre></span> <span name = "INTRA" style='top:159px; left:77px' class="ft4"><pre><font face='Arial'>Your Network</font></pre></span> <span name = "INTRA" style='top:267px; left:77px' class="ft2"><pre><font face='Arial'><i><b>Troubleshooting</b></i> <i><b>a</b></i></font></pre></span> <span name = "INTRA" style='top:287px; left:77px' class="ft2"><pre><font face='Arial'><i><b>sluggish</b></i> <i><b>LAN</b></i> <i><b>can</b></i> <i><b>be</b></i> <i><b>a</b></i></font></pre></span> <span name = "INTRA" style='top:265px; left:247px' class="ft0"><pre><font face='Arial'><b>T</b></font></pre></span> <span name = "INTRA" style='top:267px; left:279px' class="ft1"><pre><font face='Arial'>his article is about getting the maximum performance from your LAN</font></pre></span> <span name = "INTRA" style='top:280px; left:279px' class="ft1"><pre><font face='Arial'>without changing your network hardware. The performance is achieved</font></pre></span> <span name = "INTRA" style='top:292px; left:279px' class="ft1"><pre><font face='Arial'>by optimising network traffic whilst still being able to support the business</font></pre></span> <span name = "INTRA" style='top:305px; left:247px' class="ft1"><pre><font face='Arial'>processes the computers in your enterprise are there to enable. It will consider</font></pre></span> <span name = "INTRA" style='top:308px; left:77px' class="ft2"><pre><font face='Arial'><i><b>complex</b></i> <i><b>process,</b></i> <i><b>but</b></i></font></pre></span> <span name = "INTRA" style='top:318px; left:247px' class="ft1"><pre><font face='Arial'>systems with connections to two of the major LAN server systems in use today </font></pre></span> <span name = "INTRA" style='top:328px; left:77px' class="ft2"><pre><font face='Arial'><i><b>there</b></i> <i><b>are</b></i> <i><b>a</b></i> <i><b>number</b></i> <i><b>of</b></i></font></pre></span> <span name = "INTRA" style='top:330px; left:247px' class="ft1"><pre><font face='Arial'>Novell NetWare, and the various forms of Microsoft LAN networking.</font></pre></span> <span name = "INTRA" style='top:349px; left:77px' class="ft2"><pre><font face='Arial'><i><b>simple</b></i> <i><b>changes</b></i> <i><b>you</b></i></font></pre></span> <span name = "INTRA" style='top:357px; left:247px' class="ft2"><pre><font face='Arial'><i><b>Ethernet</b></i> <i><b>Configuration</b></i></font></pre></span> <span name = "INTRA" style='top:369px; left:77px' class="ft2"><pre><font face='Arial'><i><b>can</b></i> <i><b>make</b></i> <i><b>to</b></i> <i><b>improve</b></i></font></pre></span> <span name = "INTRA" style='top:379px; left:247px' class="ft1"><pre><font face='Arial'>One area where LAN performance can seem sluggish is where the rules of</font></pre></span> <span name = "INTRA" style='top:390px; left:77px' class="ft2"><pre><font face='Arial'><i><b>performance.</b></i> <i><b>We</b></i> <i><b>explain</b></i></font></pre></span> <span name = "INTRA" style='top:392px; left:247px' class="ft1"><pre><font face='Arial'>constructing Ethernet networks have been ignored or are not known. It is there </font></pre></span> <span name = "INTRA" style='top:405px; left:247px' class="ft1"><pre><font face='Arial'>fore useful to review these rules. Many enterprises that start with a handful of</font></pre></span> <span name = "INTRA" style='top:411px; left:77px' class="ft2"><pre><font face='Arial'><i><b>the</b></i> <i><b>main</b></i> <i><b>problem</b></i> <i><b>areas</b></i></font></pre></span> <span name = "INTRA" style='top:417px; left:247px' class="ft1"><pre><font face='Arial'>computers, and have the foresight to network them, will usually start with a single</font></pre></span> <span name = "INTRA" style='top:430px; left:247px' class="ft1"><pre><font face='Arial'>Ethernet hub (repeater) possibly a cheap 8 port unit. Sooner or later the enter </font></pre></span> <span name = "INTRA" style='top:431px; left:77px' class="ft2"><pre><font face='Arial'><i><b>and</b></i> <i><b>their</b></i> <i><b>solutions.</b></i></font></pre></span> <span name = "INTRA" style='top:443px; left:247px' class="ft1"><pre><font face='Arial'>prise's growth will require more than eight hosts on the LAN, and that LAN will</font></pre></span> <span name = "INTRA" style='top:455px; left:247px' class="ft1"><pre><font face='Arial'>be extended. The easiest way to do this is by daisy chaining hubs together, and</font></pre></span> <span name = "INTRA" style='top:463px; left:77px' class="ft1"><pre><font face='Arial'>By Simon Pride</font></pre></span> <span name = "INTRA" style='top:468px; left:247px' class="ft1"><pre><font face='Arial'>for small networks this is indeed a valid strategy. However, there are some</font></pre></span> <span name = "INTRA" style='top:479px; left:77px' class="ft1"><pre><font face='Arial'>System Administrator</font></pre></span> <span name = "INTRA" style='top:481px; left:247px' class="ft1"><pre><font face='Arial'>industry determined rules about Ethernet networks, such as:</font></pre></span> <span name = "INTRA" style='top:494px; left:77px' class="ft1"><pre><font face='Arial'>Scient</font></pre></span> <span name = "INTRA" style='top:503px; left:247px' class="ft3"><pre><font face='Arial'>G</font></pre></span> <span name = "INTRA" style='top:501px; left:261px' class="ft1"><pre><font face='Arial'>The maximum length of a Thick Ethernet (10Base5) backbone is 500 metres.</font></pre></span> <span name = "INTRA" style='top:516px; left:247px' class="ft3"><pre><font face='Arial'>G</font></pre></span> <span name = "INTRA" style='top:514px; left:261px' class="ft1"><pre><font face='Arial'>This backbone may be tapped to provide local network access at no more than</font></pre></span> <span name = "INTRA" style='top:527px; left:261px' class="ft1"><pre><font face='Arial'>100 points.</font></pre></span> <span name = "INTRA" style='top:541px; left:247px' class="ft3"><pre><font face='Arial'>G</font></pre></span> <span name = "INTRA" style='top:539px; left:261px' class="ft1"><pre><font face='Arial'>The maximum length of AUI cable from a tap point is 15 metres.</font></pre></span> <span name = "INTRA" style='top:554px; left:247px' class="ft3"><pre><font face='Arial'>G</font></pre></span> <span name = "INTRA" style='top:552px; left:261px' class="ft1"><pre><font face='Arial'>The maximum length of a segment of Thin Ethernet (10Base2 or thinnet) is 185</font></pre></span> <span name = "INTRA" style='top:564px; left:261px' class="ft1"><pre><font face='Arial'>metres.</font></pre></span> <span name = "INTRA" style='top:579px; left:247px' class="ft3"><pre><font face='Arial'>G</font></pre></span> <span name = "INTRA" style='top:577px; left:261px' class="ft1"><pre><font face='Arial'>There can be no more than four repeaters (hubs) on a 10Base T segment.</font></pre></span> <span name = "INTRA" style='top:591px; left:247px' class="ft3"><pre><font face='Arial'>G</font></pre></span> <span name = "INTRA" style='top:590px; left:261px' class="ft1"><pre><font face='Arial'>The maximum length of cable from hub to network host is 100 metres.</font></pre></span> <span name = "INTRA" style='top:615px; left:247px' class="ft1"><pre><font face='Arial'>You can break these rules, and your network will probably work, most of the time.</font></pre></span> <span name = "INTRA" style='top:628px; left:247px' class="ft1"><pre><font face='Arial'>However, if you carry on adding devices to a network over and above the official</font></pre></span> <span name = "INTRA" style='top:640px; left:247px' class="ft1"><pre><font face='Arial'>specs, you will find that performance degrades and strange errors occur at</font></pre></span> <span name = "INTRA" style='top:653px; left:247px' class="ft1"><pre><font face='Arial'>random times. These problems can often look very much like client configuration</font></pre></span> <span name = "INTRA" style='top:666px; left:247px' class="ft1"><pre><font face='Arial'>or hardware problems, and many hundreds of support hours have been wasted</font></pre></span> <span name = "INTRA" style='top:678px; left:247px' class="ft1"><pre><font face='Arial'>trying to troubleshoot problematic workstations when, in fact, the network</font></pre></span> <span name = "INTRA" style='top:691px; left:247px' class="ft1"><pre><font face='Arial'>infrastructure itself has been at fault.</font></pre></span> <span name = "INTRA" style='top:712px; left:247px' class="ft1"><pre><font face='Arial'>Assuming your network infrastructure is within spec, we can move on to looking</font></pre></span> <span name = "INTRA" style='top:724px; left:247px' class="ft1"><pre><font face='Arial'>at the kinds of traffic on a network with a view to minimising inessential use.</font></pre></span> <span name = "INTRA" style='top:751px; left:247px' class="ft2"><pre><font face='Arial'><i><b>Minimising</b></i> <i><b>Traffic</b></i></font></pre></span> <span name = "INTRA" style='top:773px; left:247px' class="ft1"><pre><font face='Arial'>Traffic on LANs can be assigned to different categories which need different</font></pre></span> <span name = "INTRA" style='top:786px; left:247px' class="ft1"><pre><font face='Arial'>strategies to reduce their usage of available bandwidth. Some of the usage is</font></pre></span> <span name = "INTRA" style='top:798px; left:247px' class="ft1"><pre><font face='Arial'>barely optimisable for example, the data sent when a workstation reads a file</font></pre></span> <span name = "INTRA" style='top:811px; left:247px' class="ft1"><pre><font face='Arial'>from a file server or sends a stream of data to a network print queue but a good</font></pre></span> <span name = "INTRA" style='top:824px; left:247px' class="ft1"><pre><font face='Arial'>deal of LAN traffic is concerned with elements of housekeeping and can be</font></pre></span> <span name = "INTRA" style='top:837px; left:247px' class="ft1"><pre><font face='Arial'>reduced without affecting the business being done.</font></pre></span> <span name = "INTRA" style='top:857px; left:247px' class="ft1"><pre><font face='Arial'>Far and away the most likely candidate for tuning on small to medium LANs is</font></pre></span> <span name = "INTRA" style='top:870px; left:247px' class="ft1"><pre><font face='Arial'>traffic caused by resource location. Windows networking, from the early days of</font></pre></span> <span name = "INTRA" style='top:882px; left:247px' class="ft1"><pre><font face='Arial'>LAN Manager to Windows NT, has always depended on the same resource</font></pre></span> <span name = "INTRA" style='top:895px; left:247px' class="ft1"><pre><font face='Arial'>location methods. In a Windows network, also known as an SMB network after</font></pre></span> <span name = "INTRA" style='top:950px; left:52px' class="ft5"><pre><font face='Helvetica'>Issue 121:August 2000</font></pre></span> <span name = "INTRA" style='top:943px; left:261px' class="ft6"><pre><font face='Arial'><b>PC</b> <b>Network</b> <b>Advisor</b></font></pre></span> <span name = "INTRA" style='top:950px; left:612px' class="ft5"><pre><font face='Helvetica'>File: P1224.1</font></pre></span> <span name = "INTRA" style='top:962px; left:52px' class="ft5"><pre><font face='Helvetica'>page 3</font></pre></span> <span name = "INTRA" style='top:962px; left:561px' class="ft5"><pre><font face='Helvetica'>Problem Solving:Tuning</font></pre></span> <span name = "INTRA" style='top:967px; left:302px' class="ft7"><pre><font face='Helvetica'><b>www.itp journals.com</b></font></pre></span> <span name = "INTRA" class='nav' style='left: 357px; top: 1010px'><pre>Next page <a href='page0002.htm'>></a></pre></span> <span name = "INTRA" style='top:1050px; left:50px' class="ft4"><pre><b><font color="#FF0000" size="3" face="Arial">New!</font><font color="#FF0000" size="3" face="Arial Narrow"> </font><font size="2" face="Arial">The best sites for quality <a href="http://www.inkjet-printer-cartridges.org">inkjet printer cartridges</a> and the best sites for <a href="http://www.cheap-inkjet-cartridges.com">cheap inkjet cartridges</a></font></b></pre></span></body> <span name = "INTRA" style='top:1100px; left:300px' class="ft4"><pre><b><font color="#FF0000" size="3" face="Arial"><a href="../index.html">Windows Help Desk Home</a> </font></b></pre></span></body></html>