even if u don`t use any wireless bridges, it seems very likely that u have duplicate packets!!<div><div><br></div><div>so please try to capture & analyze your traffic to find out if u have duplicates and where they come from,..<div>
<br></div><div>Markus</div><div><br></div><div>btw i just checked with nodes running >= 0.6.0, and did not find this warnings. (but i do not have duplicate packets around *G)<br>so this messages are very likely no false positives, .. *G</div>
<div><br><br><div class="gmail_quote">On Sat, Oct 9, 2010 at 11:10 AM, Gioacchino Mazzurco <span dir="ltr"><<a href="mailto:gmazzurco89@gmail.com">gmazzurco89@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
no there is not bridge in our node we use pure routing<br><br><div class="gmail_quote">2010/10/8 h2o-post <span dir="ltr"><<a href="mailto:h2o-post@gmx.net" target="_blank">h2o-post@gmx.net</a>></span><div><div></div>
<div class="h5"><br><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">
<div link="blue" vlink="purple" lang="DE"><div><p class="MsoNormal"><span style="font-size:11pt;color:rgb(31, 73, 125)">HI all,</span></p><p class="MsoNormal"><span style="font-size:11pt;color:rgb(31, 73, 125)"> </span></p>
<p class="MsoNormal"><span style="font-size:11pt;color:rgb(31, 73, 125)" lang="EN-US">Just out of my head I remember that weh ad the same issue in our mesh. We run about 80 wireless adhoc nodes with olsr and we use 5GHz</span></p>
<p class="MsoNormal"><span style="font-size:11pt;color:rgb(31, 73, 125)" lang="EN-US">backbone links to connect some of those nodes on their wan port.</span></p><p class="MsoNormal"><span style="font-size:11pt;color:rgb(31, 73, 125)" lang="EN-US">While I saw the same duplicated packets, It turned out to be an issue with the p2p backbone links. We are using ubiquity hardware and their implementation</span></p>
<p class="MsoNormal"><span style="font-size:11pt;color:rgb(31, 73, 125)" lang="EN-US">of the client-bridged mode is incorrect and was the key which caused that duplicated olsr packets on our side.</span></p><p class="MsoNormal">
<span style="font-size:11pt;color:rgb(31, 73, 125)" lang="EN-US">After changing the p2p backbone links from AP<->Client-bridge mode to AP(WDS) <-> AP(WDS) there was no duplicated packet anymore.</span></p>
<p class="MsoNormal"><span style="font-size:11pt;color:rgb(31, 73, 125)" lang="EN-US">It seems that in client-bridge mode the multicast packets from olsr got duplicated per backbone links … so it was after 2links time 4 and so one ….</span></p>
<p class="MsoNormal"><span style="font-size:11pt;color:rgb(31, 73, 125)" lang="EN-US">Maybe you have a similar setup !?</span></p><p class="MsoNormal"><span style="font-size:11pt;color:rgb(31, 73, 125)" lang="EN-US"> </span></p>
<p class="MsoNormal"><span style="font-size:11pt;color:rgb(31, 73, 125)" lang="EN-US">Bye Bluse</span></p><p class="MsoNormal"><span style="font-size:11pt;color:rgb(31, 73, 125)" lang="EN-US"> </span></p><p class="MsoNormal">
<span style="font-size:11pt;color:rgb(31, 73, 125)" lang="EN-US"> </span></p><p class="MsoNormal"><span style="font-size:11pt;color:rgb(31, 73, 125)" lang="EN-US"> </span></p><p class="MsoNormal"><b><span style="font-size:10pt">Von:</span></b><span style="font-size:10pt"> <a href="mailto:olsr-users-bounces@lists.olsr.org" target="_blank">olsr-users-bounces@lists.olsr.org</a> [mailto:<a href="mailto:olsr-users-bounces@lists.olsr.org" target="_blank">olsr-users-bounces@lists.olsr.org</a>] <b>Im Auftrag von </b>Gioacchino Mazzurco<br>
<b>Gesendet:</b> Freitag, 8. Oktober 2010 14:44<br><b>An:</b> Markus Kittenberger<br><b>Cc:</b> <a href="mailto:wireless@ml.ninux.org" target="_blank">wireless@ml.ninux.org</a>; <a href="mailto:olsr-dev@lists.olsr.org" target="_blank">olsr-dev@lists.olsr.org</a>; <a href="mailto:olsr-users@lists.olsr.org" target="_blank">olsr-users@lists.olsr.org</a><br>
<b>Betreff:</b> Re: [Olsr-users] [Olsr-dev] Strange debug message from olsrd</span></p><div><div></div><div><p class="MsoNormal"> </p><p class="MsoNormal" style="margin-bottom:12pt">mmm it seems we are not using buggy driver because our node are ubiquity picostation with madwifi, moreover we have the same message from eth0 ( wired interface ) ... and not seems we have loop in every node... and now mdns is disabled and we continue to have the same message... here is the realtime topology:<br>
<a href="http://131.114.250.100/status.php" target="_blank">http://131.114.250.100/status.php</a><br><a href="http://131.114.250.100:2006/" target="_blank">http://131.114.250.100:2006/</a><br><br></p><div><p class="MsoNormal">
2010/10/8 Markus Kittenberger <<a href="mailto:Markus.Kittenberger@gmx.at" target="_blank">Markus.Kittenberger@gmx.at</a>></p><p class="MsoNormal">this is a warning that olsrd received the exactly same packet from one of its neighbor more than once,..<br>
infact olsrd received a packet with an seqnr which is identical to the previous packet,..</p><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">known cause for example is the buggy wireless driver of routeros (if u use for example use wds links (with bad signal) between mikrotik routerboards you will get duplicate packets seldomly)</p>
</div><div><p class="MsoNormal">or maybe you built a layer 2 loop, or found another buggy hardware/device driver,..</p></div><div><p class="MsoNormal">mdns might also produce duplicates</p></div><div><p class="MsoNormal">
</p></div><div><p class="MsoNormal">btw: olsrd versoins that report this, are not affected by duplicate olsr packets (they ignore the duplicate), but older olsrd versions interprete a duplicate packet as extreme packet loss (65535 packets lost *G) and will set the links lq to 0,... </p>
</div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">as you get many erros of this type, i recommend to find out what causes it, as other software may also react bad on duplicates</p></div><div><p class="MsoNormal">
</p></div><div><p class="MsoNormal" style="margin-bottom:12pt">Markus</p><div><div><div><p class="MsoNormal">On Fri, Oct 8, 2010 at 10:46 AM, Gioacchino Mazzurco <<a href="mailto:gmazzurco89@gmail.com" target="_blank">gmazzurco89@gmail.com</a>> wrote:</p>
</div></div><blockquote style="border-width:medium medium medium 1pt;border-style:none none none solid;border-color:-moz-use-text-color -moz-use-text-color -moz-use-text-color rgb(204, 204, 204);padding:0cm 0cm 0cm 6pt;margin-left:4.8pt;margin-right:0cm">
<div><div><p class="MsoNormal" style="margin-bottom:12pt">Hey all on our network in Pisa we are using olsrd from stable branch, today reading the output of logread command i have found a lot of olsrd related message here is a short piece:<br>
<br>Jan 2 16:31:20 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 32869 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (80 Bytes)<br>Jan 2 16:31:21 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 54141 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (80 Bytes)<br>
Jan 2 16:31:21 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 10366 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (56 Bytes)<br>Jan 2 16:31:21 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 57171 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (56 Bytes)<br>
Jan 2 16:31:22 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 32870 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (80 Bytes)<br>Jan 2 16:31:23 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 54142 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (148 Bytes)<br>
Jan 2 16:31:23 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 10367 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (160 Bytes)<br>Jan 2 16:31:23 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 57172 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (216 Bytes)<br>
Jan 2 16:31:24 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 32871 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (188 Bytes)<br>Jan 2 16:31:24 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 54143 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (80 Bytes)<br>
Jan 2 16:31:25 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 57173 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (56 Bytes)<br>Jan 2 16:31:25 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 10368 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (112 Bytes)<br>
Jan 2 16:31:25 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 32872 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (80 Bytes)<br>Jan 2 16:31:26 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 54144 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (80 Bytes)<br>
Jan 2 16:31:26 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 57174 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (56 Bytes)<br>Jan 2 16:31:27 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 10369 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (104 Bytes)<br>
Jan 2 16:31:27 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 32873 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (188 Bytes)<br>Jan 2 16:31:28 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 54145 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (148 Bytes)<br>
Jan 2 16:31:28 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 57175 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (216 Bytes)<br>Jan 2 16:31:29 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 10370 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (168 Bytes)<br>
Jan 2 16:31:29 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 32874 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (80 Bytes)<br>Jan 2 16:31:30 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 54146 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (80 Bytes)<br>
Jan 2 16:31:30 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 57176 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (56 Bytes)<br>Jan 2 16:31:30 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 32875 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (80 Bytes)<br>
Jan 2 16:31:30 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 10371 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (104 Bytes)<br>Jan 2 16:31:31 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 54147 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (148 Bytes)<br>
Jan 2 16:31:32 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 57177 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (160 Bytes)<br>Jan 2 16:31:32 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 32876 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (188 Bytes)<br>
Jan 2 16:31:32 OpenWrt <a href="http://daemon.info" target="_blank">daemon.info</a> olsrd[705]: detected duplicate packet with seqnr 10372 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (168 Bytes)<br><br>here is our topology <a href="http://131.114.250.100/status.php" target="_blank">http://131.114.250.100/status.php</a><br>
the node is fd7d:d7bb:2c97:dec3:0:15:6dfc:720b<br><br>but i find the same message on all node of network...<br>here is our typical configuration<br><br><br>DebugLevel 1<br><br>IpVersion 6<br><br>LoadPlugin "olsrd_txtinfo.so.0.1"<br>
{<br> PlParam "Accept" "0::0"<br>}<br><br>LoadPlugin "olsrd_mdns.so.1.0.0"<br>{<br> PlParam "MDNS_TTL" "10"<br><br> PlParam "NonOlsrIf" "ath0"<br>
PlParam "NonOlsrIf" "eth0"<br>}<br><br>Hna6<br>{<br> 0::ffff:0000:0000 96<br> 0::ffff:0afe:0000 112<br> 0::ffff:0aaf:0000 120<br>}<br><br>Interface "ath1"<br>{<br> Mode "mesh"<br>
IPv6Multicast FF0E::1<br> IPv6Src fd7d:d7bb:2c97:dec3:0000:0015:6DFC:720B<br>}<br><br><br>Interface "eth0"<br>{<br> Mode "ether"<br> IPv6Multicast FF0E::1<br> IPv6Src fd7d:d7bb:2c97:dec3:0000:0015:6DFD:720B<br>
}<br><br><br>debug level is set to 1 but forced to 0 by -d param on our custom olsrd starting script<br><br></p></div></div><p class="MsoNormal">--<br>Olsr-dev mailing list<br><a href="mailto:Olsr-dev@lists.olsr.org" target="_blank">Olsr-dev@lists.olsr.org</a><br>
<a href="http://lists.olsr.org/mailman/listinfo/olsr-dev" target="_blank">http://lists.olsr.org/mailman/listinfo/olsr-dev</a></p></blockquote></div><p class="MsoNormal"> </p></div></div><p class="MsoNormal"> </p></div></div>
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