[Olsr-users] [Olsr-dev] Strange debug message from olsrd
h2o-post
(spam-protected)
Fri Oct 8 21:26:25 CEST 2010
HI all,
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
backbone links to connect some of those nodes on their wan port.
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
of the client-bridged mode is incorrect and was the key which caused that
duplicated olsr packets on our side.
After changing the p2p backbone links from AP<->Client-bridge mode to
AP(WDS) <-> AP(WDS) there was no duplicated packet anymore.
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 ..
Maybe you have a similar setup !?
Bye Bluse
Von: (spam-protected)
[mailto:(spam-protected)] Im Auftrag von Gioacchino
Mazzurco
Gesendet: Freitag, 8. Oktober 2010 14:44
An: Markus Kittenberger
Cc: (spam-protected); (spam-protected);
(spam-protected)
Betreff: Re: [Olsr-users] [Olsr-dev] Strange debug message from olsrd
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:
http://131.114.250.100/status.php
http://131.114.250.100:2006/
2010/10/8 Markus Kittenberger <(spam-protected)>
this is a warning that olsrd received the exactly same packet from one of
its neighbor more than once,..
infact olsrd received a packet with an seqnr which is identical to the
previous packet,..
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)
or maybe you built a layer 2 loop, or found another buggy hardware/device
driver,..
mdns might also produce duplicates
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,...
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
Markus
On Fri, Oct 8, 2010 at 10:46 AM, Gioacchino Mazzurco <(spam-protected)>
wrote:
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:
Jan 2 16:31:20 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 32869 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (80 Bytes)
Jan 2 16:31:21 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 54141 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (80 Bytes)
Jan 2 16:31:21 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 10366 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (56 Bytes)
Jan 2 16:31:21 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 57171 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (56 Bytes)
Jan 2 16:31:22 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 32870 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (80 Bytes)
Jan 2 16:31:23 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 54142 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (148 Bytes)
Jan 2 16:31:23 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 10367 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (160 Bytes)
Jan 2 16:31:23 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 57172 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (216 Bytes)
Jan 2 16:31:24 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 32871 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (188 Bytes)
Jan 2 16:31:24 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 54143 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (80 Bytes)
Jan 2 16:31:25 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 57173 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (56 Bytes)
Jan 2 16:31:25 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 10368 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (112 Bytes)
Jan 2 16:31:25 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 32872 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (80 Bytes)
Jan 2 16:31:26 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 54144 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (80 Bytes)
Jan 2 16:31:26 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 57174 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (56 Bytes)
Jan 2 16:31:27 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 10369 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (104 Bytes)
Jan 2 16:31:27 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 32873 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (188 Bytes)
Jan 2 16:31:28 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 54145 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (148 Bytes)
Jan 2 16:31:28 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 57175 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (216 Bytes)
Jan 2 16:31:29 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 10370 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (168 Bytes)
Jan 2 16:31:29 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 32874 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (80 Bytes)
Jan 2 16:31:30 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 54146 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (80 Bytes)
Jan 2 16:31:30 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 57176 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (56 Bytes)
Jan 2 16:31:30 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 32875 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (80 Bytes)
Jan 2 16:31:30 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 10371 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (104 Bytes)
Jan 2 16:31:31 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 54147 from fd7d:d7bb:2c97:dec3:0:15:f2dc:faa6 on eth0 (148 Bytes)
Jan 2 16:31:32 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 57177 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (160 Bytes)
Jan 2 16:31:32 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 32876 from fd7d:d7bb:2c97:dec3:0:23:7d29:13fa on eth0 (188 Bytes)
Jan 2 16:31:32 OpenWrt daemon.info olsrd[705]: detected duplicate packet
with seqnr 10372 from fd7d:d7bb:2c97:dec3:0:15:6dfc:71ce on ath1 (168 Bytes)
here is our topology http://131.114.250.100/status.php
the node is fd7d:d7bb:2c97:dec3:0:15:6dfc:720b
but i find the same message on all node of network...
here is our typical configuration
DebugLevel 1
IpVersion 6
LoadPlugin "olsrd_txtinfo.so.0.1"
{
PlParam "Accept" "0::0"
}
LoadPlugin "olsrd_mdns.so.1.0.0"
{
PlParam "MDNS_TTL" "10"
PlParam "NonOlsrIf" "ath0"
PlParam "NonOlsrIf" "eth0"
}
Hna6
{
0::ffff:0000:0000 96
0::ffff:0afe:0000 112
0::ffff:0aaf:0000 120
}
Interface "ath1"
{
Mode "mesh"
IPv6Multicast FF0E::1
IPv6Src fd7d:d7bb:2c97:dec3:0000:0015:6DFC:720B
}
Interface "eth0"
{
Mode "ether"
IPv6Multicast FF0E::1
IPv6Src fd7d:d7bb:2c97:dec3:0000:0015:6DFD:720B
}
debug level is set to 1 but forced to 0 by -d param on our custom olsrd
starting script
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