--- Eric Robishaw <> wrote:
> Have you tried (if it's an option) changing the
> multicast address? If you're using multicast you
> probably already know all that... Also, just for
> grins, have you tried alternate ports?
Thanks, Eric, and yes, I've done all of that, over and over. In fact the
software works on Windows running Cygwin regardless of which MultiCast address
or UDP port I select, so I know the software is reasonably correct, it's the
TS7250 filtering the MultiCast frames at the MAC address level for some reason.
I've got a RAW IP socket open on a sniffer which displays all IP packets seen
on the Ethernet LAN. It sees billions and billions of IP frames a minute on the
company LAN but does not see the MultiCast frames despite other machines seeing
them, so it looks like the TS7250 is filtering at the MAC level.
I've got an email out to TechnoLogics to see if they have an idea. When I
telephoned them and explained the issue, the guy told me that I knew more about
MultiCasting than he did. }:-} Which is reasonable since most IP work is going
to be subnet broadcasting or point-to-point Unicasting.
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