[OLSR-users] Problems with some net clients

John Gorkos (spam-protected)
Tue Feb 7 15:41:39 CET 2006

This is somewhat orthogonal to OLSR, but since there are several folks with 
large scale olsr deployments, hopefully someone can help.

I have a client buried deep in the mesh (i.e. 2-3 hops to get to an edge 
router) that wants to use MSN Messenger.  His problem is that Messenger will 
only stay connected for limited periods of time (i.e. 3-5 minutes).  His 
disconnects seem to be timed to coincide with network architecture changes 
(i.e. his route might shift from -> -> 
(edge) to -> -> (edge) )  He doesn't 
appear to be changing edge routers, but that shouldn't matter anyway, since 
both HNA nodes shoot PTP to a final core router that NATs them on to the 
internet from a single address.  The bottom line is that, although the final 
address that the MSN server sees should never change, the routes that those 
packets take before the final NAT does change, and Messenger hates this.
  Has anyone experienced anything like this before? All routers in the network 
are WRT54G routers running olsrd 4.10.

BTW, I experimented with LQ versus Hysterisis, and it was the worst 7 days of 
my networking life.  Load averages on all routers went from .05 to 1.0+, 
customers were constantly screaming at me about slow connections, poor 
performance, and I wound up refunding about 1/2 my revenue for the month.  I 
was using "standard" settings with fisheye for a very static network (no 
mobile nodes).  I admire everyone that built and tested the LQ code, and I'm 
jealous of those that use it in production, but my experience with it has 
been absolutely horrible.

John Gorkos

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