<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">Dear all,<br>
<br>
Recently we also noticed loops in the routes established by
OLSRv1, on a partial mesh topology (with ~20 machines). We are
using olsr 0.6.3 with default configuration file and only
Interface line has updated. Not using any plugins. As of now wired
connections and at the deployment will be using wireless radios.<br>
<br>
Due to the loop, the packets sent through one Interface and
received on another. ssh, ping worked fine regardless of that.
However, we realized the loop when 'nmap' erroneously reported a
node as down.<br>
<br>
One point to note here is, when we conducted the test we used
10.0.0.0/8 subnet for all the nodes, so that we can do random
reconnects to simulate node movements. However, Henning suggested
to put different Interfaces of the same router into different
subnets (in his reply on another thread). So, when we do the tests
again we will see whether that has any impact on loops.<br>
<br>
However, whether loop in routes are expected in general, for such
topologies? or by doing some configuration changes can we avoid
that?<br>
<br>
Thank you.<br>
<br>
<br>
Regards,<br>
Vignesh<br>
<br>
<br>
<br>
On Wednesday 27 June 2012 03:24 AM, Érico Porto wrote:<br>
</div>
<blockquote
cite="mid:CAG1KTJcqojZeU6dOWfF2-4XGgbfW3tcz3wbDR1ibm-XTxM8x7w@mail.gmail.com"
type="cite">
<div>I think he meant a file containing the following lines</div>
<div><br>
</div>
<div>IpVersion 4</div>
<div>Interface "wlan0"</div>
<div>{</div>
<div>}</div>
<br clear="all">
Érico V. Porto<br>
<br>
<br>
<div class="gmail_quote">On Tue, Jun 26, 2012 at 4:27 PM, John
Clark <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:jeclark2006@aim.com" target="_blank">jeclark2006@aim.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div style="word-wrap:break-word"><br>
<div>
<div class="im">
<div>On Jun 26, 2012, at 12:06 PM, Markus Kittenberger
wrote:</div>
<br>
<blockquote type="cite">
<div><br>
<div class="gmail_quote">On Tue, Jun 26, 2012 at
8:29 PM, John Clark <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:jeclark2006@aim.com"
target="_blank">jeclark2006@aim.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0
0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
Thanks all,<br>
<br>
I updated my olsrd to the 6.3 version that's on
the download page. Compiled ok, and did an
install and 'install_libs', which seems to have
cured my problem with loading the plugins.<br>
</blockquote>
<div>(you could have done an install_all)</div>
<div><br>
</div>
<blockquote class="gmail_quote" style="margin:0 0
0 .8ex;border-left:1px #ccc
solid;padding-left:1ex"><br>
I used the default installed olsrd.conf, and
only changed the interfaces list.<br>
</blockquote>
<div>try to use a new olsrd.conf (i.e an
absolutely empty one except the protcol version
ipv4 or ipv6 and the interface names)</div>
</div>
</div>
</blockquote>
<div><br>
</div>
</div>
I believe I'm using that conf, all I changed was the
interface list.</div>
<div><br>
</div>
<div>I'll recheck that...
<div class="im"><br>
<blockquote type="cite">
<div>
<div class="gmail_quote">
<div><br>
</div>
<div>this will use default settings for
everything, and might cure your actual
problems,..</div>
<div><br>
</div>
<blockquote class="gmail_quote" style="margin:0 0
0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
As a note, in the past, upon reflection, my
'meshes' have been either linear chains or
trees, and there have bee no internal loops.</blockquote>
<div class="gmail_quote"><br>
</div>
olsrd works on such topologies, as infact such
topologies are what it is meant to operate on.
<div>
(it definetely does not need the networks to be
a tree,..)</div>
</div>
</div>
</blockquote>
<div><br>
</div>
</div>
I've been working on this more, and will try to give more
details as they come to me, but at the moment, I have the
problem when the one link is removed, problems arise.</div>
<div><br>
</div>
<div><br>
</div>
<div>Thanks,</div>
<div>John Clark.</div>
<div><br>
</div>
</div>
<br>
--<br>
Olsr-users mailing list<br>
<a moz-do-not-send="true"
href="mailto:Olsr-users@lists.olsr.org">Olsr-users@lists.olsr.org</a><br>
<a moz-do-not-send="true"
href="https://lists.olsr.org/mailman/listinfo/olsr-users"
target="_blank">https://lists.olsr.org/mailman/listinfo/olsr-users</a><br>
</blockquote>
</div>
<br>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
</blockquote>
<br>
</body>
</html>