Thanks Markus.<br><br>Randy<br><br><div class="gmail_quote">On Tue, Feb 9, 2010 at 2:11 PM, Markus Kittenberger <span dir="ltr"><<a href="mailto:Markus.Kittenberger@gmx.at">Markus.Kittenberger@gmx.at</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div>first question: which olsr verion(s) are u using?</div></blockquote><div><br>Sorry I should have included this before: 0.5.6-r7 <br>
<br><br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><br></div><div>i doubt that the hellos are the packets you loose,.. (they go only 1 hop)<br>
</div><div><br></div><div>tcs/hnas/mids are more likely,..</div></blockquote><div><br>Whatever packets are getting lost are indeed going only one hop. I set up tcpdump to monitor UDP packets on port 698 going out machine A to machine B. I filtered it such that I only saw packets from machine A on both machines. The result was, some packets going out A aren't getting to B.<br>
<br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div>
<br></div><div>there is an compile time paramet in olsrd, that can show the validity times of all topology dat in the txtinfo-plugin,..</div><div><br></div><div>i recommend that you have a look at this, to find out what information times out regulary, then you know where you have to change your settings</div>
</blockquote><div><br>How is information timing out going to help?<br> <br></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div><br></div><div>to activate this change follwing in lib/txtinfo/src/olsrd_txtinfo.h</div><div>/* uncomment this to include VTime values into Link/Topology command */<br>/* #define ACTIVATE_VTIME_TXTINFO */<br></div><div>
<br></div></blockquote><div>Looking into this.<br><br> </div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div></div><div>regards Markus</div>
<br><div class="gmail_quote"><div><div></div><div class="h5">On Tue, Feb 9, 2010 at 8:59 PM, Randy Buck <span dir="ltr"><<a href="mailto:sutekistudent@gmail.com" target="_blank">sutekistudent@gmail.com</a>></span> wrote:<br>
</div></div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div></div><div class="h5">
Dear list (impersonal, yet true),<br><br>We have been working with OLSR for some time now and have come up with the following problem: <br><br>OLSR loses routes when traffic other than the OLSR packets is on the network. Our OLSR packets (UDP port 698) are being prioritized over all other traffic; this doesn't help. We suspect the OLSR packets are colliding with other packets in the air. <br>
<br>With this in mind, we experimented with changing the HelloInterval to a really short time (0.5 sec) and the HelloValidityTime correspondingly (5 sec). We had the equation HelloValidityTime = HelloInterval * LQWindowSize in mind when setting these values. We assume the LQ window size is 10. As a side note, we know that LQ
window size has been replaced by other settings, but don't know how it
has been changed or to what it has been changed to. If anyone can shed
light on that, we would appreciate it. The idea here is that if we send more packets in a shorter time, while we will still lose packets once in a while, more will get through in the long run.<br><br>Getting back to the problem, we are wondering if there are known "optimal" settings for these types of fields in the config file. We would like to overcome the fact that some OLSR packets will be dropped due to things like the hidden node problem.<br>
<br>Thanks,<br><font color="#888888"><br>Randy Buck<br>
</font><br></div></div>--<br>
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