[AG-TECH] NZ AG3.1 Bridge - error

Douglas Kosovic douglask at itee.uq.edu.au
Thu Aug 9 17:09:32 CDT 2007

Hi Nathan,

> We still seem to be having problems registering with the Bridge Server
> in Argonne. It seems to work okay on our normal campus network (which
> isn't multicast enabled) but doesn't seem to work on our KAREN network
> (multicast enabled).

I suspect it's a broken router that isn't able to tolerate TCP window

On your linux machine, turn off TCP window scaling:
  sysctl -w net.ipv4.tcp_window_scaling=0

If it works, make it permanent by adding the following line to


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