[Olsr-dev] 0.5.6-rc7 is out

[John Hay]

Hi Henning,

On Sun, Jul 13, 2008 at 08:54:11AM +0200, Henning Rogge wrote:
> On Sun, Jul 13, 2008 at 08:39, John Hay <(spam-protected)> wrote:
> > I have tried it plus Henning's fix for etx_ff, with and without the line
> > LinkQualityAlgorithm "etx_ff" on a few boxes in our network. FreeBSD+ipv6.
> > What I see is that in both cases (with and without etx_ff set) dot_draw
> > reports bigger values for the links than the previous olsr that ran on
> > them.
> The old ETX algorithm (0.5.5) had some bugs that make it's values inconsistent.
> 
> "etx_fpm" was changed from rounding down to rounding up in it's fix
> point math to allow it to grow to LQ 1.0.
> "etx_ff" should be a more stable version of the old 0.5.5 algorithm
> without it's bugs.
> 
> > It was mostly 0.5.5 or 0.5.4 with the ipv6 patch that went into
> > 0.5.5. I do think that either the calculation is not correct or there
> > might be some other problem. Maybe it does not like our config. I'll
> > add it to the end. At the moment the links are pretty idle and I would
> > expect to see values of 1.00 or maybe a little bigger. Two of the boxes
> > are connected via 100M ethernet and previously that link would go up
> > and down in the 1.x range, now it stays above 2.5. There is no packet
> > loss on it and pretty idle, so I think it should be 1.00?
> Hmm... you have a "zero packet loss" link between two etx_ff boxes and
> it's still not at 1.0 ?
> That's strange...
> 
> Can you verify the values with the txtinfo plugin please ?
> 
> > You can see a pic (updated every 20-30 seconds) at:
> >
> > http://stats.meraka.csir.co.za/mesh/pta-mesh.html
> >
> > The boxes that I have updated are: tower1, koppie1, mesh-190b, mesh-190d
> > and mesh-21cb. The link between tower1 and koppie1 are the ethernet link.
> > (The link colours are green for a link value between 1 and 2, yellow
> > from 2 to 5 and red above 5.)
> >
> > So can it be our config? The idea behind our config was that most of
> > the links in the "centre" of our network was pretty good and stable, so
> > olsr should not remove routes too easily.
> 
> 
> > #############################
> > LinkQualityAlgorithm "etx_ff"
> > DebugLevel      0
> > IpVersion       6
> > ClearScreen     yes
> > Hna4
> > {
> > }
> > Hna6
> > {
> > }
> > AllowNoInt      yes
> > Willingness     7
> > IpcConnect
> > {
> >     MaxConnections  0
> >     Host            127.0.0.1
> > }
> 
> > UseHysteresis   no
> > HystScaling     0.50
> > HystThrHigh     0.80
> > HystThrLow      0.30
> You can delete this block
> 
> > LinkQualityLevel        2
> > LinkQualityWinSize      100
> you can delete this one too (not doing anything in the latest olsrd)
> 
> > Pollrate        0.05
> 
> > TcRedundancy    2
> > MprCoverage     7
> 
> > LoadPlugin "olsrd_dot_draw.so.0.3"
> > {
> > }
> > Interface "ath0" "ath1" "ath2" "ath3" "npe0"
> > {
> >    HelloInterval    2.0
> >    HelloValidityTime   200.0
> >    TcInterval        1.0
> >    TcValidityTime      100.0
> >    MidInterval 5.0
> >    MidValidityTime     15.0
> >    HnaInterval 5.0
> >    HnaValidityTime     15.0
> > }
> 
> Hmm... the rest seems to be okay. Please verify the values with the
> txtinfo plugin, we had a bug report about the dotdraw plugin.

To my eye it looks the same. I have let olsr run for 15 minutes before
capturing this data. I have put the output of txtinfo at:

ftp://ftp2.za.freebsd.org/pub/local/txtinfo.out

The ipv6 addresses are a bit tedious. :-) The 2 boxes with the ethernet
link is tower1 and koppie1:

host tower1
tower1.cids.org.za has IPv6 address fd9c:6829:597c:10:202:6fff:fe41:191f
tower1.cids.org.za has IPv6 address fd9c:6829:597c:10:202:6fff:fe41:1921
tower1.cids.org.za has IPv6 address fd9c:6829:597c:10:202:6fff:fe41:1920
tower1.cids.org.za has IPv6 address fd9c:6829:597c:4:2d0:12ff:fe03:2359
tower1.cids.org.za has IPv6 address fd9c:6829:597c:10:215:6dff:fe53:1fee

host koppie1
koppie1.cids.org.za has IPv6 address fd9c:6829:597c:3:202:6fff:fe34:21b5
koppie1.cids.org.za has IPv6 address fd9c:6829:597c:4:200:24ff:fec3:cf95
koppie1.cids.org.za has IPv6 address fd9c:6829:597c:6:200:24ff:fec3:cf94

I have reshufled the addresses to put the main olsr address on top.

I have checked the link with "ping6 -q -i 0.01 -c 500 koppie1" with
no loss. (500 packets with 0.01 sec between them.)

John
-- 
John Hay -- (spam-protected) / (spam-protected)