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<TITLE>The Answer Guy 36: EQL Serial Line "Load Balancing"</TITLE>
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<font color="#B03060">The Answer Guy</font>
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<H4>By James T. Dennis,
<a href="mailto:answerguy@ssc.com">answerguy@ssc.com</a><BR>
Starshine Technical Services,
<A HREF="http://www.starshine.org/">http://www.starshine.org/</A>
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<H3 align="left"><img src="../../gx/dennis/qbubble.gif" height="50" width="60"
alt="(?) " border="0">
EQL Serial Line "Load Balancing"
</H3>
<p><strong>From Jim Kjorlaug on Mon, 30 Nov 1998
</strong></p>
<!-- ::
EQL Serial Line "Load Balancing"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
:: -->
<BLOCKQUOTE>
</BLOCKQUOTE>
<P><STRONG><IMG SRC="../../gx/dennis/qbub.gif" ALT="(?)"
HEIGHT="28" WIDTH="50" BORDER="0"
>
I live in an area where ISDN services have been promised but no
delivered. I had read a howto for EQL but can no longer find the
documention on this method of ganging two modems together. Can
you please let me know where I can find the source for this and
the howto.
</STRONG></P>
<P><STRONG>
Thanks for any help you can offer.
<br>Jim Kjorlaug
</STRONG></P>
<P><STRONG>
</STRONG></P>
<BLOCKQUOTE><IMG SRC="../../gx/dennis/bbub.gif" alt="(!)"
HEIGHT="28" WIDTH="50" BORDER="0"
>
The README.eql (EQL Driver: Serial IP Load Balancing HOWTO)
by Simon "Guru Aleph-Null" Janes
(<A HREF="mailto:simon@ncm.com">simon@ncm.com</A>)
doesn't seem to be in the LDP HOWTO Index. However it
is included with the Linux kernel sources under
</BLOCKQUOTE>
<BLOCKQUOTE><BLOCKQUOTE><CODE>
.../drivers/net/README.eql
</CODE></BLOCKQUOTE></BLOCKQUOTE>
<BLOCKQUOTE>
... so that's probably your best bet. Naturally
the sources to the driver are also included
therein. This README doesn't appear to have been
updated since 1995.
</BLOCKQUOTE>
<BLOCKQUOTE>
Note that this requires support from your ISP. In
other words, to use EQL to effectively double you
bandwidth, you need support for the same version of
EQL load balancing at each end of the connection.
Most ISP's are likely to be somewhat averse to this
prospect (or to charge extra) since you'll be taking
up two of their modems while connected over EQL.
</BLOCKQUOTE>
<BLOCKQUOTE>
Another thing to consider is the difference between
latency and bandwidth. Bandwidth refers to the
amount of data that can be transmitted over a communications
channel in a given amount of time. Latency refers to
the propagation delay --- the amount of time before
the first bits get to one end or the other of the channel.
</BLOCKQUOTE>
<BLOCKQUOTE>
EQL can provide more bandwidth. However modem latency
is pretty high and nothing can improve that within
the constraints of the current standards.
</BLOCKQUOTE>
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<H5 align="center"><a href="http://www.linuxgazette.com/ssc.copying.html"
>Copyright ©</a> 1999, James T. Dennis
<BR>Published in <I>The Linux Gazette</I> Issue 36 January 1999</H5>
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