[OLSR-users] WLAN Router with two WLAN interfaces - route flapping issue

[Rolf Schärer]

Hi group,

We discovered the following issue running olsr on a WRAP board 
(www.pcengines.ch) with two WLAN interfaces and one Ethernet interface:

Everything works ok if the other olsr-enabled WLAN routers (mostly 
Linksys WRT54G's running a Freifunk Firmware) can only connect to one of 
the WLAN interfaces of the WRAP board. Trouble starts if the other 
routers connect to two WLAN interfaces...
E.g. the default-route, announced by the WRAP board, is flapping between 
the two interfaces. This behaviour is an effect of the Link Quality 
Extension - if it is turned off on every router, the routing is based on 
hop counts and behaves ok.

My question is, whether somebody on this list has discovered the same 
problems and if, what the solution was (if there's any!)

Thanks a lot.
Take care,
Rolf

More Infos:
===========
We're running the following olsr version:

  *** olsr.org - 0.4.10 ***
  Build date: Jan 18 2006
  http://www.olsr.org

And the configuration file:
DebugLevel              0
IpVersion               4
AllowNoInt              yes
Pollrate                0.1
TcRedundancy            2
MprCoverage             7
LinkQualityFishEye      1
LinkQualityWinSize      100
LinkQualityDijkstraLimit 0 5.0
Hna4
{
         10.248.251.64 255.255.255.224
         10.248.251.96 255.255.255.224
}
LoadPlugin "olsrd_nameservice.so.0.2"
{
         PlParam "name"          "KSSG2"
         PlParam "hosts-file"    "/rw/var/hosts"
         PlParam "suffix"        ".olsr"
}
LoadPlugin "olsrd_txtinfo.so.0.1"
{
         PlParam "Accept" "127.0.0.1"
}
LoadPlugin "olsrd_httpinfo.so.0.1"
{
         PlParam "Port" "81"
         PlParam "Host" "127.0.0.1"
         PlParam "Net" "0.0.0.0 0.0.0.0"
}
IpcConnect
{
         MaxConnections  1
         Host            127.0.0.1
         Net 172.16.0.0 255.255.255.0
}
LinkQualityLevel 2
UseHysteresis no
Interface "eth0" "ath0" "ath1"
{
         HelloInterval           6.0
         HelloValidityTime       108.0
         TcInterval              4.0
         TcValidityTime          324.0
         MidInterval             18.0
         MidValidityTime         324.0
         HnaInterval             18.0
         HnaValidityTime         108.0
}
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