On Sat, Jan 22, 2011 at 08:21:09PM +0100, Oliver Hartkopp wrote:
> On 22.01.2011 19:42, Kurt Van Dijck wrote:
> > On Sat, Jan 22, 2011 at 07:07:22PM +0100, Oliver Hartkopp wrote:
> >>
> >> If you tweak your CAN protocol with addresses bound to a specific CAN
> >> interface this has a system-wide effect. So your Linux box can only act as
> >> a
> >> specific J1939 node as restricted by the given addresses above.
> > on a pure j1939 network, a box is intended to use only de addresses given
> > above.
> > I assume that a given box can use multiple addressess, each of them
> > configured
> > with '$ ip addr add ...'
>
> Yes. But the missing point is that you can ideally have multiple of these
> 'boxes' running on one single host to simulate a complete environment
> consisting of multiple nodes.
Here you lost me.
It appears we have different ideas of what is called a 'box'.
To make me follow, we need some terminology:
ECU = logical unit sending _all_ of it j1939 traffic with the same SA, on a
single network
CHIP = 1 physical CAN network chip.
BOX = 1 physical box with 1 or more CHIPS.
Not sure is this is clear terminology. Suggestions are welcome. I will answer
your
remark later.
>
Regards,
Kurt
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