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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hubs are at the bottom of the food chain,
followed by switches then routers.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hub – Contains electronics to handle
the signals and collision detection then forwards the everything it receives to
all the other ports. Hubs run into problems at high loads due to the nature of
the CDMA (Collision Detection with Multiple Access) protocol which maxes the
line quite quickly.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Switch – A switch learns where items
are on it’s local downstream and filters which packets are sent to which
port. This is more efficient than simply sending every packet to every port.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>A router reads the packets header (or
contents) and then forwards it down the most appropriate route. The Routes are
stored in a route table and are dynamic, if a link fails the data can still get
through. Big routers are very very expensive.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Your best bet would be to go for a hub as
they are cheap and there is nothing to configure. You can plug it into an
existing RJ45 socket and expand the number of ports available to use. All you
need to know is the default gateway IP info. No mucking about with multiple
DHCP servers and routing tables. Greg is probably right about the 10base2 port
which used coax connections to run the signal. I’d skip that one.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Henry Bennett<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span lang=EN-US style='font-size:10.0pt;font-family:Tahoma'>
glastonbury-bounces@mailman.lug.org.uk
[mailto:glastonbury-bounces@mailman.lug.org.uk] <b><span style='font-weight:
bold'>On Behalf Of </span></b><st1:PersonName w:st="on">Greg Browne</st1:PersonName><br>
<b><span style='font-weight:bold'>Sent:</span></b> 31 December 2005 10:20<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">The
Linux User Group of Glastonbury</st1:PersonName> (LUGOG)<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [<st1:City w:st="on"><st1:place
w:st="on">Glastonbury</st1:place></st1:City>] Wireless Access Point</span></font><span
lang=EN-US><o:p></o:p></span></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>It most probably has RJ45 connections and an old 10Base2 connection.
Many old routers/hubs had both.<br>
<br>
As I understand it. A router broadcasts the information out on all ports, a
switch is more intelligent. It has already etected the connections so just sends
the packet to the correct port, saving lots of traffic and bandwidth.<br>
<br>
Greg<br>
<br>
(From webopedia - <span name=intelliTxt id=intelliTxt>One of several
adaptations of the <a href="http://www.webopedia.com/TERM/1/Ethernet.html">Ethernet</a>
(<a href="http://www.webopedia.com/TERM/1/IEEE_802_standards.html">IEEE 802.3</a>)
standard for <a
href="http://www.webopedia.com/TERM/1/local_area_network_LAN.html">Local Area
Networks (LANs)</a>. The 10Base-2 standard (also called <i><span
style='font-style:italic'>Thinnet</span></i>) uses 50 ohm <a
href="http://www.webopedia.com/TERM/1/coaxial_cable.html">coaxial cable</a>
(RG-58 A/U) with maximum lengths of 185 meters. This <a
href="http://www.webopedia.com/TERM/1/10Base_2.html" target="_blank"><font
color="#333333"><span style='color:#333333;text-decoration:none'>cable </span></font></a>is
thinner and more flexible than that used for the 10Base-5 standard.)</span><br>
-- <br>
<st1:PersonName w:st="on">Greg Browne</st1:PersonName><br>
<a href="http://www.rotherleigh.co.uk">www.rotherleigh.co.uk</a><br>
Tel: 020 7871 8495<br>
Fax: 07967 627835 <o:p></o:p></span></font></p>
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