On Mon, Dec 15, 2008 at 03:43:43AM +0100, Felipe Alfaro Solana wrote: > If the two machines that are part of the same CARP group are connected to > the same switch, and you are experiencing packet loss, then something really > bad is going on. How many ports does your switch have? Perhaps the total > aggregated switching capacity of the switch is not enough in your > deployment. Who says the switch is losing the packets, if your router is overloaded it's forwarding at 100% speed and you have no room for CARP announcements. One solution would be to increase the time between advertisements and hope for the best.
IME forwarded packets seem to somehow have a higher priority than self-originated traffic in most OS's; don't know why this is, just a gut feeling. Probably related to interrupts taking away CPU time from other things; if the machine is so loaded the physical console is slow as molasses, I doubt that CARP can work very well either. -- Jussi Peltola
