So you found a dropped packet on one particular combination of hardware/software some time ago. Bugs get fixed (and yes, new ones sometimes introduced.) LinuxCNC has had bugs. Doesn't mean that a PC/RTOS has no business running a machine. There are no collisions on full duplex ethernet as its not physically possible. Packets being dropped can happen in point-to-point connection too if there is a bug.
On Wed, Oct 26, 2016 at 7:17 AM, Mark <wendt.m...@gmail.com> wrote: > On 10/26/2016 01:12 AM, Chris Albertson wrote: > > Does anyone here know of one verified case where a packet was dropped by > a > > switch? This just does not happen > > > > Also, if you place a second Ethernet dongle on the Pi, the dongle and the > > built-in port share a serial bus. This is not really an issue but it you > > don't like the idea of a multiplexed bus, you can't avoid it. > > > > Switches are not like routers they work at the Ethernet packet level and > > only read the first few bits of each packet then cut it through fro input > > FIFO to output FIFO. It is done in special hardware > > My documentation is still at the Naval Research Lab in Washington DC (we > had to document all our issues and how we fixed them). I'm sure if you > sent a nice letter to the commander of the Lab, he might send you my > documented problems with collisions on some of our switched networks. > > It does happen. And Layer Three switches route. > > ------------------------------------------------------------ > ------------------ > The Command Line: Reinvented for Modern Developers > Did the resurgence of CLI tooling catch you by surprise? > Reconnect with the command line and become more productive. > Learn the new .NET and ASP.NET CLI. Get your free copy! > http://sdm.link/telerik > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ The Command Line: Reinvented for Modern Developers Did the resurgence of CLI tooling catch you by surprise? Reconnect with the command line and become more productive. Learn the new .NET and ASP.NET CLI. Get your free copy! http://sdm.link/telerik _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
