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<BODY>On 17 Aug 2001 14:12:04 -0500, Mark Bickel wrote<pre><FONT COLOR="#1a1973">> > </FONT>
<FONT COLOR="#1a1973">> > A hub will operate at the lowest common speed, so if you have a 10mbs</FONT>
<FONT COLOR="#1a1973">> > cable modem and a couple of 100mbs computers, the hub will slow things</FONT>
<FONT COLOR="#1a1973">> > down to 10mbs (if the cable modem is active at the time). A switch</FONT>
<FONT COLOR="#1a1973">> > operates at the best speed possible, so your two 100mbs computers will</FONT>
<FONT COLOR="#1a1973">> > talk back and forth at 100mbs, while the cable modem will still only</FONT>
<FONT COLOR="#1a1973">> > talk at 10mbs.</FONT>
<FONT COLOR="#1a1973">> > </FONT>
<FONT COLOR="#1a1973">> > ...Ken</FONT>
<FONT COLOR="#1a1973">> </FONT>
<FONT COLOR="#1a1973">> A switch does not necesarily have to provide dual-speed or auto-sense</FONT>
<FONT COLOR="#1a1973">> capabilities, although very many of them do. Also note that dual-speed</FONT>
<FONT COLOR="#1a1973">> hubs must buffer input from a 100baseT to a 10baseT NIC. When that buffer</FONT>
<FONT COLOR="#1a1973">> fills the hub must tell the faster NIC to stop transmitting. Throughput</FONT>
<FONT COLOR="#1a1973">> therefore will always be limited by the slower NIC.</FONT>
<FONT COLOR="#1a1973">> </FONT>
<FONT COLOR="#1a1973">> Mark.Bickel@ericsson.com</FONT>
<FONT COLOR="#1a1973">> </FONT>
<FONT COLOR="#1a1973">> </FONT>
<FONT COLOR="#1a1973">> _______________________________________________</FONT>
<FONT COLOR="#1a1973">> </FONT><A HREF="http://www.ntlug.org/mailman/listinfo/discuss">http://www.ntlug.org/mailman/listinfo/discuss</A></pre><TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%">
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<pre>-- Thanks, I think I understand the difference now, and I definately notice a difference!
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| Patrick Parks |
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ooO Ooo</pre></TD>
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